Over recent decades,historical areas conservation has become an important strategy to improve urban competitiveness in the global economy.As shown in existing studies that the conservation of historical areas mainly f...Over recent decades,historical areas conservation has become an important strategy to improve urban competitiveness in the global economy.As shown in existing studies that the conservation of historical areas mainly focused on the physical environment,there is still room for the non-physical study,and researches on the social network conservation in mountainous historical areas are particularly insufficient.Therefore,this paper aims to establish an evaluation system which is helpful for the social network conservation of historical areas.The evaluation system is based on social network analysis and the information of social relationships gathered in field surveys using a specifically designed questionnaire method in four mountainous towns in Chongqing,China.And it was analyzed from three perspectives,i.e.,by the basic statistical properties,condensate subgroup,and centrality.Then five analysis indicators were conceived,including density,lambda set,k-core,degree centrality,and betweenness centrality.The analysis results demonstrate that the social networks of the four towns show different indicators,which are respectively relevant to completeness degree,edgerelatedness level,local stability,structural balance,and concentrated trend of social relationships.Results from SNA modeling indicate that neighborhood residents of historical areas who have more stable and healthier social relationships are relatively not easily be destroyed.The results also illustrate that the social networks structure is influenced by the terrain,form,and function of historical areas,and the change of historical areas is caused by"individual-family-society".Finally,the strategies guiding the social network conservation are put forward from two aspects.These findings suggest that the conservation and management of social network and aborigines in historical areas should be emphasized to increase the collective benefits and vitality.展开更多
With the development and changes of the times,many cities have to face the problem of renewal.However,in the context of globalization,urban renewal also makes urban cultural characteristics and regional characteristic...With the development and changes of the times,many cities have to face the problem of renewal.However,in the context of globalization,urban renewal also makes urban cultural characteristics and regional characteristics inevitably missing.Therefore,we should pay attention to the protection and planning of regional historical and cultural heritages in the process of urban renewal,which plays an important role in the construction of urban characteristics and the shaping of city card.Xigu area of Tianjin also faces the problems of cultural loss and need for reconstruction,its function,layout,industrial structure and land use are adjusted and optimized in this article,with a view to showing the value of historical and cultural heritage and context of regional history.展开更多
SITUATED in the northwestern part of Sichuan Province, Huanglong Scenic and Historic Interest Area is renowned for its beautiful mountainous scenery, with relatively undisturbed and highly diverse forest ecosystems.
As global urbanization accelerates,the spatial vitality of historical urban areas has become a critical issue in urban regeneration and sustainable development.Some existing spatial vitality evaluation frameworks fail...As global urbanization accelerates,the spatial vitality of historical urban areas has become a critical issue in urban regeneration and sustainable development.Some existing spatial vitality evaluation frameworks fail to integrate multiple dimensions effectively,limiting their capacity to capture the dynamic complexity of these areas comprehensively.This study utilizes multi-source big data and deep learning technologies to propose a new multidimensional evaluation system for spatial vitality,improving existing models and systematically analyzing distribution patterns and formation mechanisms.The research results show that:(1)The spatial vitality of Changsha’s historical urban area exhibits a distinct“core-periphery”pattern.Core commercial zones show high vitality due to functional concentration,whereas peripheral areas have weaker vitality because of lower physical space quality and limited functional diversity.(2)Through correlation and principal component analyses,five key factors influencing spatial vitality were identified:emotional perception,visual aesthetics,spatial attractiveness,Functionality and Structure,and traffic conditions.(3)Bivariate spatial autocorrelation analysis further revealed spatial clustering effects between spatial vitality and its key factors,emphasizing the potential for enhancing functional diversity and optimizing road traffic conditions in core areas.The study’s findings offer scientific guidance for urban regeneration and policy-making,particularly in optimizing spatial layouts,enhancing vitality,and fostering the coordinated development of cultural heritage protection,providing valuable insights for other developing countries.展开更多
Formulating regulatory detailed plans for historic urban areas consistently faces a central challenge:balancing preservation and innovation while addressing practical issues such as functional decline,environmental ri...Formulating regulatory detailed plans for historic urban areas consistently faces a central challenge:balancing preservation and innovation while addressing practical issues such as functional decline,environmental risks,loss of vitality,and cultural discontinuity.Accordingly,in response to spatial form control requirements of territorial and spatial planning in the new era-namely,integrating fragments into a coherent whole,harmonizing differences while seeking commonality,preserving authenticity,and guiding micro-level spatial development through macro-level spatial imagery-this paper proposes a series of planning strategies.These include figure-ground control to restore urban fabric,typological control based on spatial form division,prototypical control by tracing origins,and imagery control to maintain cultural continuity.The application of these strategies in the regulatory detailed planning of Wuhan's historic urban areas demonstrates their feasibility and practicality,offering a reference for similar planning efforts in other historic urban areas.展开更多
Building a 15-minute radius livelihood service circle from the needs of residents is a topdown process of optimizing urban layout and promoting high-quality development implemented by the government.In September 2022,...Building a 15-minute radius livelihood service circle from the needs of residents is a topdown process of optimizing urban layout and promoting high-quality development implemented by the government.In September 2022,Xicheng District of Beijing served as a national pilot of the 15-minute radius livelihood service circle.Based on the data of POI,urban walking network and building outline,this paper studies the coverage of commercial service facilities in the 15-minute radius livelihood service circle of Chunshu Street by using kernel density analysis and urban network analysis tools.The research shows that the commercial facilities are concentrated in Zhuangsheng Square and Dazhalan commercial district.There are large gaps in housekeeping and couriers logistics facilities,which need to be further improved.展开更多
By combining with the local chronicles,poems,travel notes and image data and combing the landscape space types of Xiqiao Mountain Scenic Spot,the typical space was summarized as follows:the space of Neo Confucianism e...By combining with the local chronicles,poems,travel notes and image data and combing the landscape space types of Xiqiao Mountain Scenic Spot,the typical space was summarized as follows:the space of Neo Confucianism education advocating nature,the space of landscape sightseeing with spaciousness and profundity alternation and the space of religious sacrifice with the unity of heaven and man.A preliminary study on the landscape spatial characteristics of Xiqiao Mountain enriches the research on the landscape characteristics of south of the five ridges scenic spot.展开更多
Understanding the historical evolution of spatial layout and architectural styles in a historic area is imperative for its preservation and rejuvenation.However,conventional methods such as document collation and feld...Understanding the historical evolution of spatial layout and architectural styles in a historic area is imperative for its preservation and rejuvenation.However,conventional methods such as document collation and feld surveys are time-and resource-intensive.This research focuses on the historic area of Dujiangyan city(Dujiangyan Old Town)and uses computer vision techniques to increase the efciency and accuracy of architectural information capture.Semantic segmentation techniques are employed to derive building footprints from remote sensing satellite images captured from three points in time over a period of nearly fve decades,facilitating the comparison of spatial patterns and the identifcation of diferent architectural styles in panoramic street views.The distribution of architectural styles is analysed from urban planning and architectural perspectives.The experimental fndings illustrate well-preserved spatial patterns and discernible development strategies across various periods.Image-processing methods have emerged as efective tools for analysing urban spatial dynamics and identifying architectural styles,thereby yielding quantifable data essential for obtaining a nuanced understanding of historic areas.These insights can contribute to planning,management,and preservation eforts aimed at historic areas.展开更多
The regeneration of cultural spaces in historic conservation areas aims to enhance these spaces while preserving their heritage. Achieving sustainable regeneration requires an understanding of the interplay between sp...The regeneration of cultural spaces in historic conservation areas aims to enhance these spaces while preserving their heritage. Achieving sustainable regeneration requires an understanding of the interplay between spaces and their underlying cultures. This study examines the urban regeneration of courtyard spaces on Beijing's Yangmeizhu Street, using Space Syntax and acculturation theory to explore spatial and cultural attributes. A Kruskal-Wallis H analysis is conducted to investigate the correlation between these features. Findings demonstrate cultural acculturation along Yangmeizhu Street, evaluated through behavior, knowledge, values, and identity. Three typologies emerge: separation(maintaining a unique identity), integration(adopting a broader culture while preserving a distinct identity), and assimilation(complete adoption of the surrounding culture). The assimilation type shows notable differences in spatial characteristics compared to integration and separation. This research highlights the impact of space managers or designers with diverse cultural backgrounds on the transformation of cultural spaces during urban regeneration, revealing contributions from both foreign and indigenous cultures.展开更多
The long-term spatial evolution of historic urban areas provides crucial historical evidence for urban socio-economic development.Understanding this evolution is vital for both historic preservation and the efficient ...The long-term spatial evolution of historic urban areas provides crucial historical evidence for urban socio-economic development.Understanding this evolution is vital for both historic preservation and the efficient use of central urban land.This paper conducts a case study of Tianqiao area located along the southern central axis of Beijing's historic urban area,utilizing the Historical Geographic Information Systems(HGIS)methodology.It divides its spatial development from 1553 to 2022 into four periods and explores the driving factors from three aspects:political system transformations,transportation and trade dynamics,and administrative reforms.First,it examines the area's spatial development influenced by ancient geopolitical factors,highlighting the characteristics of self-organized development.During the Republic of China period,the area evolved into an auxiliary space fulfilling the material and spiritual needs of the populace under urban territorial governance.Second,it identifies three transportation factors–internal and external transit routes,urban core locations,and regional trade–that contributed to its linear expansion southward along major transportation arteries.Third,it highlights four distinct land use states under bottom-up and top-down management mechanisms:germination,freedom,constraint,and revitalization.The relaxation of political control during the Republic of China period significantly shaped Tianqiao area's hierarchical structure,spatial scale,and physical form.Amid China's ongoing urban economic ownership restructuring,Tianqiao area exhibits spatial tendencies towards orderly integration and capital-driven spatial cultural reproduction.展开更多
The report of the 20th National Congress of the Communist Party of China emphasizes the need to thoroughly implement the people-centered development philosophy,promoting a new era of urban planning that prioritizes th...The report of the 20th National Congress of the Communist Party of China emphasizes the need to thoroughly implement the people-centered development philosophy,promoting a new era of urban planning that prioritizes the needs of the people.Accordingly,addressing the genuine needs of people is an essential component of contemporary urban regeneration and community governance.Residential areas in historic districts face dual developmental demands,i.e.,the preservation of historical characteristics and the improvement of residents'quality of life.Based on this premise,this paper introduces the humanistic ERG theory to analyze its relevance in addressing the complex human-environment relationships,degraded living conditions,and the difficulties of coordinating multi-stakeholder interests in the residential area regeneration in historic districts in China.Through an empirical case study of the Diaoyutai historic district in Nanjing,the paper clarifies the coordination mechanisms among residents,government,and society in the regeneration and governance of such areas.It concludes by proposing people-oriented and sustainable strategies for regeneration and governance,aiming to inform and inspire similar urban planning and governance practices in other historic districts across China.展开更多
Historic urban areas are a crucial component of urban heritage,embodying the collective memory of urban development and possessing distinctive urban textures and cultural attributes.However,the growing impact of globa...Historic urban areas are a crucial component of urban heritage,embodying the collective memory of urban development and possessing distinctive urban textures and cultural attributes.However,the growing impact of globalization on the urban environment poses challenges to historic urban areas,including diminishing social recognition,aging infrastructure,loss of vitality,and cultural erosion.To address these challenges,this study proposes a novel approach to revitalizing historic urban areas by employing space syntax methodology.The study focuses on Yushan Historic District in China as a case study and uses spatial models within space syntax to describe,analyze,and interpret its urban morphology.The objective is to enhance urban vitality while preserving the heritage fabric of historic urban areas.Additionally,it aims to contribute to the advancement of space syntax research,specifically in the context of urban renewal and revitalization of historic districts.The findings reveal the spatial factors that contribute to the generation of vitality within the district,identify areas requiring intervention,and provide strategies for revitalizing historic urban areas.This study demonstrates the potential of utilizing a space syntax approach in urban revitalization,providing valuable guidance for effectively conserving urban heritage within the context of urban renewal.展开更多
One of the main reasons for the decline of urban historic areas in China is the coexistence of multiple property rights.It also deeply affects conservation and regeneration practice.This paper aims to propose a graphi...One of the main reasons for the decline of urban historic areas in China is the coexistence of multiple property rights.It also deeply affects conservation and regeneration practice.This paper aims to propose a graphical method that illustrates the association between property rights,space,and resident behavior.Based on typological maps and justified graphs,a three-step method was proposed to visualize the relationships between these three elements.The final graph and quantitative data were used to observe the evolution of the courtyard building from a diachronic perspective,as well as to compare the residential behavior in different types from a synchronic perspective.The results show that following the subdivision of property rights,the building layout become more diverse due to various illegal additions,while the residential behavior within different building types tends to be consistent.Moreover,the study observed the traditional Chinese courtyard buildings’adaptability.The findings contribute to understand the evolution of Chinese urban historic areas and internal motivation,and provide guidance for the conservation and regeneration practice.展开更多
The characteristics of eight heavy metals(lead,zinc,copper,nickel,chromium,cadmium,mercury and arsenic)in the surface soil of the historical slag area of the Au ore dressing plant in the South-West of Luoyang City wer...The characteristics of eight heavy metals(lead,zinc,copper,nickel,chromium,cadmium,mercury and arsenic)in the surface soil of the historical slag area of the Au ore dressing plant in the South-West of Luoyang City were investigated and evaluated in terms of a pollution index,potential ecological hazards and health risks.The results showed that the average amounts of the heavy metals Pb,Zn and As in the soils of plots S3,S5,S7,S12 and S18 exceeded the soil pollution risk screening values.The Mero comprehensive pollution index in plots S7,S12 and S18 was greater than 3,indicating severe pollution.The severe pollution plot integrated the potential ecological risk index(RI)of each sampling point,which was in the order of RI_(S12)>RI_(S18)>RI_(S7)>RI_(S5)>RI_(S3).Among the heavy metals,Cd poses the greatest threat to ecological and human health.The effects of heavy metals in soil on the single non-carcinogenic health risk index(HQ)and the non-carcinogenic total risk index through three exposure pathways were in the order of HQ_(Hg)<HQ_(Cu)<HQ_(Ni)<HQ_(Zn)<HQ_(Cd)<HQ_(Cr)<HQ_(Pb)<HQ_(As)<1,which meant that the adult and child total carcinogenic risk(TCR)and individual carcinogenic health risk indices CRAs and CRCd were above the maximum acceptable human health level recommended by the USEPA(10^(-6)).TCRAs and TCRCd accounted for 75.65%and 23.94%of the adult TCR,respectively.TCR^(As) and TCR^(Cd) accounted for 75.93%and 23.97%of the child TCR,respectively.Overall,the TCR of children was greater than that of adults.In summary,the soil in the historical slag area of the Au ore dressing plant constitutes a serious threat to the surrounding ecological environment and to residents.展开更多
Urban spatial identity,as the core content of a distinctive urban image and the representation of urban competitiveness and attraction,is critical to cities in the rapid development process.In view of maintaining and ...Urban spatial identity,as the core content of a distinctive urban image and the representation of urban competitiveness and attraction,is critical to cities in the rapid development process.In view of maintaining and strengthening the spatial identity in a historic urban area,which is the key issue of urban construction in China at present,based on the literature review of Chinese urban spatial identity studies,three research paradigms are summarized:landscape,culture,and economy.Although the traditional evaluation method of spatial identity in historic urban areas has focused on the scarcity of characteristic resources,the relation-ship between characteristic resources and human beings has been ignored.Therefore,based on the declaration of the fundamental mechanism of urban spatial identity in historic urban areas,a new evaluation method was proposed considering four aspects,including object,subject,content,and indicators.The results indicated that the framework of evaluation and design,which is based on the assessment of the relationship between characteristic resources and human beings,is an effective strategy to improve the scientific evaluation of urban spatial identity.Our study has substantial implications for urban planners and managers in solving the urban identity crisis issue in historic urban areas.展开更多
While new buildings continue to emerge in the process of urbanization,historical buildings,as valuable legacies carrying national historical memory,play an important role in the urban landscape.Previous studies have s...While new buildings continue to emerge in the process of urbanization,historical buildings,as valuable legacies carrying national historical memory,play an important role in the urban landscape.Previous studies have shown that color harmony is a crucial factor in coordinating urban landscapes.However,the evaluation of color harmony in historic areas and buildings lacks effective quantitative standards,often overlooking factors such as complementary color harmony and the compatibility of analogous colors.This study aims to build a new method to evaluate the color harmony of historical buildings through street view technology,semantic segmentation algorithms,quantification of color harmony methods based on image property detection and classification,questionnaire verification,and takes Shanghai’s historical buildings as an example to explore.Our study categorizes six types of color harmony indexes for Shanghai street-facing historic buildings into three levels,with the top tier serving as a benchmark for excellence and the lowest tier highlighting areas in need of urban environmental improvement.This study uniquely considers color compatibility within hue ranges and expanded relationship types like complementary harmony.This approach,applicable to cities globally,offers practical tools for urban planners and conservators in managing and preserving historic areas and buildings.展开更多
The development of tourism in historic areas imposes immense pressure on heritage conservation, leading to issues such as commercial encroachment and the loss of cultural uniqueness in many domestic areas. Dayan Ancie...The development of tourism in historic areas imposes immense pressure on heritage conservation, leading to issues such as commercial encroachment and the loss of cultural uniqueness in many domestic areas. Dayan Ancient Town, as an integral part of the Old Town of Lijiang, a World Cultural Heritage Site, faces increasing challenges due to commercialization. This paper explores the cultural and commercial development of Dayan Ancient Town from the perspective of tourist perception. Using the Analytic Hierarchy Process(AHP), this study develops an evaluation system and visualization to analyze both cultural and commercial perceptions of tourists. The findings reveal that tourists' cultural perception of the town is limited, while their commercial perception is prominent. Furthermore, the study examines the distribution of cultural attractions and commercial establishments, revealing that the current cultural attractions can't contribute to high and continuous cultural perception results. The study finally proposes recommendations for enhancing tourist perception of the ancient town, such as establishing multi-level protection and development strategies, infusing cultural attributes into business, and expanding cultural attraction clusters.展开更多
Regular evaluation of street space is essential for achieving sustainable development and dynamic maintenance of historic areas.Although quantitative evaluations using street view imagery are precise and efficient,the...Regular evaluation of street space is essential for achieving sustainable development and dynamic maintenance of historic areas.Although quantitative evaluations using street view imagery are precise and efficient,they often fall short in capturing pedestrians’visual experience,largely because images are collected from vehicles.Accordingly,this paper acquires street view imagery in the human visual field before and after the street space renovation by adjusting relevant parameters,and performs image semantic segmentation.From a pedestrian’s viewpoint,the paper develops street space evaluation indicators across four dimensions:comfort,identity,diversity,and walkability.The mean square deviation method is applied to assign weights to these indicators,enabling a comprehensive evaluation of street space in historic areas.In addition to evaluating the renovation results,it proposes improvement suggestions that may provide insights into the evaluation practices of street space renovations in historic areas and contribute to improving street space quality.展开更多
1 Introduction The regeneration and revitalization of historic conservation areas is not only of significant importance for the transformation of urban spaces but also has become a widely discussed topic in recent urb...1 Introduction The regeneration and revitalization of historic conservation areas is not only of significant importance for the transformation of urban spaces but also has become a widely discussed topic in recent urban renewal efforts.The Yongqing Fang,sitting in the Enning Road 1 Introduction The regeneration and revitalization of historic conservation areas is not only of significant importance for the transformation of urban spaces but also has become a widely discussed topic in recent urban renewal efforts.The Yongqing Fang,sitting in the Enning Road Historic Conservation Area in Guangzhou,China is renowned as“the most beautiful old-style street in Guangzhou.”Through its staged redevelopment since 2016,Yongqing Fang has turned into an attractive destination with distinctive Lingnan(Cantonese)characteristics,providing places for specialty dining,creative industries,cultural performances,recreational and cultural experiences,etc.This renewal project has also stimulated the coordinated development of the surrounding areas.展开更多
基金supported by the National Key R&D Program of China(2018YFD1100804)。
文摘Over recent decades,historical areas conservation has become an important strategy to improve urban competitiveness in the global economy.As shown in existing studies that the conservation of historical areas mainly focused on the physical environment,there is still room for the non-physical study,and researches on the social network conservation in mountainous historical areas are particularly insufficient.Therefore,this paper aims to establish an evaluation system which is helpful for the social network conservation of historical areas.The evaluation system is based on social network analysis and the information of social relationships gathered in field surveys using a specifically designed questionnaire method in four mountainous towns in Chongqing,China.And it was analyzed from three perspectives,i.e.,by the basic statistical properties,condensate subgroup,and centrality.Then five analysis indicators were conceived,including density,lambda set,k-core,degree centrality,and betweenness centrality.The analysis results demonstrate that the social networks of the four towns show different indicators,which are respectively relevant to completeness degree,edgerelatedness level,local stability,structural balance,and concentrated trend of social relationships.Results from SNA modeling indicate that neighborhood residents of historical areas who have more stable and healthier social relationships are relatively not easily be destroyed.The results also illustrate that the social networks structure is influenced by the terrain,form,and function of historical areas,and the change of historical areas is caused by"individual-family-society".Finally,the strategies guiding the social network conservation are put forward from two aspects.These findings suggest that the conservation and management of social network and aborigines in historical areas should be emphasized to increase the collective benefits and vitality.
基金National Nature Science Foundation of China(51608009)Support Plan for Construction of Highlevel Teacher Team in Colleges and Universities of Beijing in 2019+1 种基金Support Program for Top-notch Young Talents(CIT&TCD201904010)Fund of Beijing Research Center of Urban Governance(20XN237).
文摘With the development and changes of the times,many cities have to face the problem of renewal.However,in the context of globalization,urban renewal also makes urban cultural characteristics and regional characteristics inevitably missing.Therefore,we should pay attention to the protection and planning of regional historical and cultural heritages in the process of urban renewal,which plays an important role in the construction of urban characteristics and the shaping of city card.Xigu area of Tianjin also faces the problems of cultural loss and need for reconstruction,its function,layout,industrial structure and land use are adjusted and optimized in this article,with a view to showing the value of historical and cultural heritage and context of regional history.
文摘SITUATED in the northwestern part of Sichuan Province, Huanglong Scenic and Historic Interest Area is renowned for its beautiful mountainous scenery, with relatively undisturbed and highly diverse forest ecosystems.
基金funded by the National Natural Science Foundation of China(Grant No.52278059)the Natural Science Foundation of Hunan Province of China(Grant No.2024JJ8316).
文摘As global urbanization accelerates,the spatial vitality of historical urban areas has become a critical issue in urban regeneration and sustainable development.Some existing spatial vitality evaluation frameworks fail to integrate multiple dimensions effectively,limiting their capacity to capture the dynamic complexity of these areas comprehensively.This study utilizes multi-source big data and deep learning technologies to propose a new multidimensional evaluation system for spatial vitality,improving existing models and systematically analyzing distribution patterns and formation mechanisms.The research results show that:(1)The spatial vitality of Changsha’s historical urban area exhibits a distinct“core-periphery”pattern.Core commercial zones show high vitality due to functional concentration,whereas peripheral areas have weaker vitality because of lower physical space quality and limited functional diversity.(2)Through correlation and principal component analyses,five key factors influencing spatial vitality were identified:emotional perception,visual aesthetics,spatial attractiveness,Functionality and Structure,and traffic conditions.(3)Bivariate spatial autocorrelation analysis further revealed spatial clustering effects between spatial vitality and its key factors,emphasizing the potential for enhancing functional diversity and optimizing road traffic conditions in core areas.The study’s findings offer scientific guidance for urban regeneration and policy-making,particularly in optimizing spatial layouts,enhancing vitality,and fostering the coordinated development of cultural heritage protection,providing valuable insights for other developing countries.
文摘Formulating regulatory detailed plans for historic urban areas consistently faces a central challenge:balancing preservation and innovation while addressing practical issues such as functional decline,environmental risks,loss of vitality,and cultural discontinuity.Accordingly,in response to spatial form control requirements of territorial and spatial planning in the new era-namely,integrating fragments into a coherent whole,harmonizing differences while seeking commonality,preserving authenticity,and guiding micro-level spatial development through macro-level spatial imagery-this paper proposes a series of planning strategies.These include figure-ground control to restore urban fabric,typological control based on spatial form division,prototypical control by tracing origins,and imagery control to maintain cultural continuity.The application of these strategies in the regulatory detailed planning of Wuhan's historic urban areas demonstrates their feasibility and practicality,offering a reference for similar planning efforts in other historic urban areas.
文摘Building a 15-minute radius livelihood service circle from the needs of residents is a topdown process of optimizing urban layout and promoting high-quality development implemented by the government.In September 2022,Xicheng District of Beijing served as a national pilot of the 15-minute radius livelihood service circle.Based on the data of POI,urban walking network and building outline,this paper studies the coverage of commercial service facilities in the 15-minute radius livelihood service circle of Chunshu Street by using kernel density analysis and urban network analysis tools.The research shows that the commercial facilities are concentrated in Zhuangsheng Square and Dazhalan commercial district.There are large gaps in housekeeping and couriers logistics facilities,which need to be further improved.
基金Sponsored by The National Natural Science Foundation of China(51978272)Key Projects of Guangzhou Science and Technology Plan(201804020017)
文摘By combining with the local chronicles,poems,travel notes and image data and combing the landscape space types of Xiqiao Mountain Scenic Spot,the typical space was summarized as follows:the space of Neo Confucianism education advocating nature,the space of landscape sightseeing with spaciousness and profundity alternation and the space of religious sacrifice with the unity of heaven and man.A preliminary study on the landscape spatial characteristics of Xiqiao Mountain enriches the research on the landscape characteristics of south of the five ridges scenic spot.
基金supported by JST SPRING,Grant Number JPMJSP2136.
文摘Understanding the historical evolution of spatial layout and architectural styles in a historic area is imperative for its preservation and rejuvenation.However,conventional methods such as document collation and feld surveys are time-and resource-intensive.This research focuses on the historic area of Dujiangyan city(Dujiangyan Old Town)and uses computer vision techniques to increase the efciency and accuracy of architectural information capture.Semantic segmentation techniques are employed to derive building footprints from remote sensing satellite images captured from three points in time over a period of nearly fve decades,facilitating the comparison of spatial patterns and the identifcation of diferent architectural styles in panoramic street views.The distribution of architectural styles is analysed from urban planning and architectural perspectives.The experimental fndings illustrate well-preserved spatial patterns and discernible development strategies across various periods.Image-processing methods have emerged as efective tools for analysing urban spatial dynamics and identifying architectural styles,thereby yielding quantifable data essential for obtaining a nuanced understanding of historic areas.These insights can contribute to planning,management,and preservation eforts aimed at historic areas.
基金Late-stage Programs of the National Social Science Fund of China(Grant No.24FYSB036)for financially supporting this research.
文摘The regeneration of cultural spaces in historic conservation areas aims to enhance these spaces while preserving their heritage. Achieving sustainable regeneration requires an understanding of the interplay between spaces and their underlying cultures. This study examines the urban regeneration of courtyard spaces on Beijing's Yangmeizhu Street, using Space Syntax and acculturation theory to explore spatial and cultural attributes. A Kruskal-Wallis H analysis is conducted to investigate the correlation between these features. Findings demonstrate cultural acculturation along Yangmeizhu Street, evaluated through behavior, knowledge, values, and identity. Three typologies emerge: separation(maintaining a unique identity), integration(adopting a broader culture while preserving a distinct identity), and assimilation(complete adoption of the surrounding culture). The assimilation type shows notable differences in spatial characteristics compared to integration and separation. This research highlights the impact of space managers or designers with diverse cultural backgrounds on the transformation of cultural spaces during urban regeneration, revealing contributions from both foreign and indigenous cultures.
基金funded by the National Natural Science Foundation of China(No.52308045)Beijing Natural Science Foundation(No.8252004)+4 种基金R&D Program of Beijing Municipal Education Commission under Grant(No.KM202310005007)China Postdoctoral Science Foundation under Grant(No.2024M753838)China Postdoctoral Science Foundation under Grant(No.2021M690266)Research Project on Education and Teaching of the Department of Urban Construction,Beijing University of Technology(No.ERCJ202417)First Class Undergraduate Course Construction Project of Beijing Institute of Technology-“Urban Design”。
文摘The long-term spatial evolution of historic urban areas provides crucial historical evidence for urban socio-economic development.Understanding this evolution is vital for both historic preservation and the efficient use of central urban land.This paper conducts a case study of Tianqiao area located along the southern central axis of Beijing's historic urban area,utilizing the Historical Geographic Information Systems(HGIS)methodology.It divides its spatial development from 1553 to 2022 into four periods and explores the driving factors from three aspects:political system transformations,transportation and trade dynamics,and administrative reforms.First,it examines the area's spatial development influenced by ancient geopolitical factors,highlighting the characteristics of self-organized development.During the Republic of China period,the area evolved into an auxiliary space fulfilling the material and spiritual needs of the populace under urban territorial governance.Second,it identifies three transportation factors–internal and external transit routes,urban core locations,and regional trade–that contributed to its linear expansion southward along major transportation arteries.Third,it highlights four distinct land use states under bottom-up and top-down management mechanisms:germination,freedom,constraint,and revitalization.The relaxation of political control during the Republic of China period significantly shaped Tianqiao area's hierarchical structure,spatial scale,and physical form.Amid China's ongoing urban economic ownership restructuring,Tianqiao area exhibits spatial tendencies towards orderly integration and capital-driven spatial cultural reproduction.
基金supported by National Natural Science Foundation of China(Nos.51878330,52508064)。
文摘The report of the 20th National Congress of the Communist Party of China emphasizes the need to thoroughly implement the people-centered development philosophy,promoting a new era of urban planning that prioritizes the needs of the people.Accordingly,addressing the genuine needs of people is an essential component of contemporary urban regeneration and community governance.Residential areas in historic districts face dual developmental demands,i.e.,the preservation of historical characteristics and the improvement of residents'quality of life.Based on this premise,this paper introduces the humanistic ERG theory to analyze its relevance in addressing the complex human-environment relationships,degraded living conditions,and the difficulties of coordinating multi-stakeholder interests in the residential area regeneration in historic districts in China.Through an empirical case study of the Diaoyutai historic district in Nanjing,the paper clarifies the coordination mechanisms among residents,government,and society in the regeneration and governance of such areas.It concludes by proposing people-oriented and sustainable strategies for regeneration and governance,aiming to inform and inspire similar urban planning and governance practices in other historic districts across China.
文摘Historic urban areas are a crucial component of urban heritage,embodying the collective memory of urban development and possessing distinctive urban textures and cultural attributes.However,the growing impact of globalization on the urban environment poses challenges to historic urban areas,including diminishing social recognition,aging infrastructure,loss of vitality,and cultural erosion.To address these challenges,this study proposes a novel approach to revitalizing historic urban areas by employing space syntax methodology.The study focuses on Yushan Historic District in China as a case study and uses spatial models within space syntax to describe,analyze,and interpret its urban morphology.The objective is to enhance urban vitality while preserving the heritage fabric of historic urban areas.Additionally,it aims to contribute to the advancement of space syntax research,specifically in the context of urban renewal and revitalization of historic districts.The findings reveal the spatial factors that contribute to the generation of vitality within the district,identify areas requiring intervention,and provide strategies for revitalizing historic urban areas.This study demonstrates the potential of utilizing a space syntax approach in urban revitalization,providing valuable guidance for effectively conserving urban heritage within the context of urban renewal.
基金This work was supported by China Postdoctoral Science Foundation(grant No.2020M681458)the National Natural Science Foundation of China for project"Research on the Mechanism and Method of Conservation and Regenerationof Historic Areasunder the Background of Coexistence of Multiple Property Rights--a Case Study of Nanjing Old City"(grant No.52008083).
文摘One of the main reasons for the decline of urban historic areas in China is the coexistence of multiple property rights.It also deeply affects conservation and regeneration practice.This paper aims to propose a graphical method that illustrates the association between property rights,space,and resident behavior.Based on typological maps and justified graphs,a three-step method was proposed to visualize the relationships between these three elements.The final graph and quantitative data were used to observe the evolution of the courtyard building from a diachronic perspective,as well as to compare the residential behavior in different types from a synchronic perspective.The results show that following the subdivision of property rights,the building layout become more diverse due to various illegal additions,while the residential behavior within different building types tends to be consistent.Moreover,the study observed the traditional Chinese courtyard buildings’adaptability.The findings contribute to understand the evolution of Chinese urban historic areas and internal motivation,and provide guidance for the conservation and regeneration practice.
基金supported by the National Natural Science Foundation of China(41201224)Henan Province Science and Technology Research Project(192102110050)Project for the Training of Young Backbone Teachers of Higher Education Institutions in Henan Province(2018GGJS047).
文摘The characteristics of eight heavy metals(lead,zinc,copper,nickel,chromium,cadmium,mercury and arsenic)in the surface soil of the historical slag area of the Au ore dressing plant in the South-West of Luoyang City were investigated and evaluated in terms of a pollution index,potential ecological hazards and health risks.The results showed that the average amounts of the heavy metals Pb,Zn and As in the soils of plots S3,S5,S7,S12 and S18 exceeded the soil pollution risk screening values.The Mero comprehensive pollution index in plots S7,S12 and S18 was greater than 3,indicating severe pollution.The severe pollution plot integrated the potential ecological risk index(RI)of each sampling point,which was in the order of RI_(S12)>RI_(S18)>RI_(S7)>RI_(S5)>RI_(S3).Among the heavy metals,Cd poses the greatest threat to ecological and human health.The effects of heavy metals in soil on the single non-carcinogenic health risk index(HQ)and the non-carcinogenic total risk index through three exposure pathways were in the order of HQ_(Hg)<HQ_(Cu)<HQ_(Ni)<HQ_(Zn)<HQ_(Cd)<HQ_(Cr)<HQ_(Pb)<HQ_(As)<1,which meant that the adult and child total carcinogenic risk(TCR)and individual carcinogenic health risk indices CRAs and CRCd were above the maximum acceptable human health level recommended by the USEPA(10^(-6)).TCRAs and TCRCd accounted for 75.65%and 23.94%of the adult TCR,respectively.TCR^(As) and TCR^(Cd) accounted for 75.93%and 23.97%of the child TCR,respectively.Overall,the TCR of children was greater than that of adults.In summary,the soil in the historical slag area of the Au ore dressing plant constitutes a serious threat to the surrounding ecological environment and to residents.
基金China Postdoctoral Science Foundation funded project(2021M690600).
文摘Urban spatial identity,as the core content of a distinctive urban image and the representation of urban competitiveness and attraction,is critical to cities in the rapid development process.In view of maintaining and strengthening the spatial identity in a historic urban area,which is the key issue of urban construction in China at present,based on the literature review of Chinese urban spatial identity studies,three research paradigms are summarized:landscape,culture,and economy.Although the traditional evaluation method of spatial identity in historic urban areas has focused on the scarcity of characteristic resources,the relation-ship between characteristic resources and human beings has been ignored.Therefore,based on the declaration of the fundamental mechanism of urban spatial identity in historic urban areas,a new evaluation method was proposed considering four aspects,including object,subject,content,and indicators.The results indicated that the framework of evaluation and design,which is based on the assessment of the relationship between characteristic resources and human beings,is an effective strategy to improve the scientific evaluation of urban spatial identity.Our study has substantial implications for urban planners and managers in solving the urban identity crisis issue in historic urban areas.
基金funded by National Key R&D Program of China(2023YFC3805503).
文摘While new buildings continue to emerge in the process of urbanization,historical buildings,as valuable legacies carrying national historical memory,play an important role in the urban landscape.Previous studies have shown that color harmony is a crucial factor in coordinating urban landscapes.However,the evaluation of color harmony in historic areas and buildings lacks effective quantitative standards,often overlooking factors such as complementary color harmony and the compatibility of analogous colors.This study aims to build a new method to evaluate the color harmony of historical buildings through street view technology,semantic segmentation algorithms,quantification of color harmony methods based on image property detection and classification,questionnaire verification,and takes Shanghai’s historical buildings as an example to explore.Our study categorizes six types of color harmony indexes for Shanghai street-facing historic buildings into three levels,with the top tier serving as a benchmark for excellence and the lowest tier highlighting areas in need of urban environmental improvement.This study uniquely considers color compatibility within hue ranges and expanded relationship types like complementary harmony.This approach,applicable to cities globally,offers practical tools for urban planners and conservators in managing and preserving historic areas and buildings.
基金funded by the Key Program of the National Natural Science Foundation of China (52038007):Research on Reconstruction of Contemporary Construction System Based on the Integration Mechanism of “Architecture, Human, and Environment” in the Chinese Context。
文摘The development of tourism in historic areas imposes immense pressure on heritage conservation, leading to issues such as commercial encroachment and the loss of cultural uniqueness in many domestic areas. Dayan Ancient Town, as an integral part of the Old Town of Lijiang, a World Cultural Heritage Site, faces increasing challenges due to commercialization. This paper explores the cultural and commercial development of Dayan Ancient Town from the perspective of tourist perception. Using the Analytic Hierarchy Process(AHP), this study develops an evaluation system and visualization to analyze both cultural and commercial perceptions of tourists. The findings reveal that tourists' cultural perception of the town is limited, while their commercial perception is prominent. Furthermore, the study examines the distribution of cultural attractions and commercial establishments, revealing that the current cultural attractions can't contribute to high and continuous cultural perception results. The study finally proposes recommendations for enhancing tourist perception of the ancient town, such as establishing multi-level protection and development strategies, infusing cultural attributes into business, and expanding cultural attraction clusters.
文摘Regular evaluation of street space is essential for achieving sustainable development and dynamic maintenance of historic areas.Although quantitative evaluations using street view imagery are precise and efficient,they often fall short in capturing pedestrians’visual experience,largely because images are collected from vehicles.Accordingly,this paper acquires street view imagery in the human visual field before and after the street space renovation by adjusting relevant parameters,and performs image semantic segmentation.From a pedestrian’s viewpoint,the paper develops street space evaluation indicators across four dimensions:comfort,identity,diversity,and walkability.The mean square deviation method is applied to assign weights to these indicators,enabling a comprehensive evaluation of street space in historic areas.In addition to evaluating the renovation results,it proposes improvement suggestions that may provide insights into the evaluation practices of street space renovations in historic areas and contribute to improving street space quality.
文摘1 Introduction The regeneration and revitalization of historic conservation areas is not only of significant importance for the transformation of urban spaces but also has become a widely discussed topic in recent urban renewal efforts.The Yongqing Fang,sitting in the Enning Road 1 Introduction The regeneration and revitalization of historic conservation areas is not only of significant importance for the transformation of urban spaces but also has become a widely discussed topic in recent urban renewal efforts.The Yongqing Fang,sitting in the Enning Road Historic Conservation Area in Guangzhou,China is renowned as“the most beautiful old-style street in Guangzhou.”Through its staged redevelopment since 2016,Yongqing Fang has turned into an attractive destination with distinctive Lingnan(Cantonese)characteristics,providing places for specialty dining,creative industries,cultural performances,recreational and cultural experiences,etc.This renewal project has also stimulated the coordinated development of the surrounding areas.
