In the new phase of sustainable development,agriculture is seeking sustainable management of the water-land-energy-economy-environment-food nexus.At present,there are few studies on optimizing crop planting structure ...In the new phase of sustainable development,agriculture is seeking sustainable management of the water-land-energy-economy-environment-food nexus.At present,there are few studies on optimizing crop planting structure and analyzing its spatial layout with consideration of natural and socio-economic factors.Herein,we proposed a framework for addressing this issue.In this framework,the NSGA-II algorithm was used to construct the multi-objective optimization model of crop planting structures with consideration of water and energy consumption,greenhouse gas(GHG)emissions,economic benefits,as well as food,land,and water security constraints,while the model for planting spatial layout optimization was established with consideration of crop suitability using the MaxEnt model and the improved Hungarian algorithm.This framework was further applied in the Black Soil Region of Northeast China(BSRNC)for analyzing optimized crop planting structures and spatial layouts of three main crops(rice,maize,and soybean)under various scenarios.This study showed that the sown area of rice in the BSRNC decreased by up to 40.73%and 35.30%in the environmental priority scenario and economic-environmental balance scenario,respectively,whereas that of soybean increased by up to 112.44%and 63.31%,respectively.In the economic priority scenario,the sown area of rice increased by up to 93.98%.Expanding the sown area of soybean was effective in reducing GHG emissions.On the contrary,rice production led to greater environmental costs though it provided higher economic returns.Among the three crops,maize exhibited an advantage in balancing environmental and economic benefits.Hegang-Jixi area in the northeast of the BSRNC was identified as the key area with the most intense crop planting transfer among different scenarios.Overall,this framework provides a new methodology for optimizing crop planting structures and spatial layouts with con-sideration of the nexus of various factors.Moreover,the case study demonstrates the applicability and expansion potential of the framework in the fields of sustainable agricultural development and food security assurance.展开更多
The suitability evaluation of population and settlements spatial layout in the mountainous areas is an important basis on which the scale of population and settlement after Wenchuan Earthquake is determined. Based on ...The suitability evaluation of population and settlements spatial layout in the mountainous areas is an important basis on which the scale of population and settlement after Wenchuan Earthquake is determined. Based on the statistical data of field research, this paper chooses 1264 towns in 51 counties as the scope of evaluation, selects eight indices in the evaluation index system which includes post-disaster population scale, population density, urbanization rate, the percentage of migrant workers, death rate by earthquake, the percentage of minorities, elevation-slope integrated terrain and comprehensive geological condition. Besides, this paper uses AHP supported by entropy technique and fuzzy membership function model to calculate the suitability evaluation index and then divides the disaster areas into five types： highly suitable area （area accounted for 11.03%）, relatively highly suitable area （15.29%）, moderately suitable area （29%）, less suitable area （30.08%） and unsuitable area （14.6%）. According to the result of suitability evaluation, this paper puts forward several suggestions for the reconstruction as follows： the urban system and the building of new countryside should be guided by the suitability evaluation subareas; post-earthquake reconstruction avoids zones near Longmenshan fracture and high-mountain gorge areas as far as possible; the scale of population and settlement should not exceed the capacity of resources and environment; population should be resettled as close as possible by considering adequately the heterogenicity and homogeneity of regional nationality culture characteristics; densely resettle the people at plains and hilly areas; encourage the migrant workers settle in the working place with their families voluntarily; and urban system reconstruction such as industry layout and important projects of lifeline should be guided by the spatial layout suitability evaluation.展开更多
The problems of spatial layout in livestock and poultry farms were discussed, and the development status of the planning evaluation on the spatial layout in recent years was systematically reviewed. The research progr...The problems of spatial layout in livestock and poultry farms were discussed, and the development status of the planning evaluation on the spatial layout in recent years was systematically reviewed. The research progress in planning evaluation systems and methods was mainly intro- duced. And some opinions were proposed to solve these problems.展开更多
Private garden is one of the three major garden styles in China,the artistic achievements of which have devoted remarkable contributions to the development of global landscape architecture.Through studying the spatial...Private garden is one of the three major garden styles in China,the artistic achievements of which have devoted remarkable contributions to the development of global landscape architecture.Through studying the spatial layout of private gardens,the authors further analyzed three ways of landscape layouts,specifically,separated scenery,winding scenery and borrowed scenery.Concrete examples were taken to demonstrate the connotations and application skills of such three layouts,in order to benefit the inheritance and development of traditional Chinese garden art.展开更多
With the investigation of the current situation of tourism activities and characteristics of recreational tourism spatial layout in Huaihua,problems in tourism spatial layout are pointed out,that is,indistinct divisio...With the investigation of the current situation of tourism activities and characteristics of recreational tourism spatial layout in Huaihua,problems in tourism spatial layout are pointed out,that is,indistinct division of tourism functions,comparatively bad relevance in the "point-axle" spatial structure,and comparatively bad horizontal and vertical coherence in tourism space.It is suggested to rationally construct tourism spatial layout in Huaihua City after the model of spatial layered structure of recreational sightseeing,that is,the model of setting Huaihua City as the center,and from the inside out with three layers of recreational island within the city,recreational sites around the city and recreational sites at towns and villages away from the city through the spatial layout of point,axis and plane.展开更多
As China enters the aging society, the old-age care problems have grown increasingly serious. Influenced by the only-child policy, traditional old-age support system fails to adapt to new social situation, the institu...As China enters the aging society, the old-age care problems have grown increasingly serious. Influenced by the only-child policy, traditional old-age support system fails to adapt to new social situation, the institutions have become major subjects in the future old-age support system. Researches on the elderly-fi t architectural design have achieved many fruits, but those on the landscape design of the elderly community has been less reported. This paper studied landscape design of the old-age support institutions from the perspective of both theory and practice, and tried to explore the spatial layout of environmental landscapes in the elderly community. On the basis of sorting out specifi c psychological needs of the elderly group in China and their needs for the layout of landscape spaces, this paper proposed some effective solutions in view of successful elderly communities in overseas countries, then analyzed the development of elderly communities in China, so as to fi gure out landscape design approaches capable of promoting physical and mental health of the elderly group in the old-age support institutions.展开更多
The stmctufe types of the waterfront settlements in the north of Jiangxi Province were analyzed. According to the relationship between location and water, die waterfront setdements in northern Jiangxi were classifi...The stmctufe types of the waterfront settlements in the north of Jiangxi Province were analyzed. According to the relationship between location and water, die waterfront setdements in northern Jiangxi were classified into tiiree categofies. The structuial commonalities of the three kinds of waterfront settlements were cleady interpreted. On this basis and combined with the field research data and relevant data, the characteristics of the waterfront setdements in northern Jiangxi were summarized： treating water as the main skeleton, choosing location by the distance ￡com watet, magnetic effect and organic textute. The characteiistic space of watetfront settLemeiits found in the investigation process was classified and elaborated, which has certain reference significance for tiie space study of waterfront settlements.展开更多
With the rapid urbanization, many high-rise buildings and new districts have been built continuously. However, the old town of cities has gradually been forgotten by people and its environment is becoming increasingly...With the rapid urbanization, many high-rise buildings and new districts have been built continuously. However, the old town of cities has gradually been forgotten by people and its environment is becoming increasingly harsh. The old town usually has diversified space and function. As an important part of the old town, the street canyon that is closely related to human settlements is a public space where people communicate and do activities. Therefore, research on microclimate-based improvement of the street canyon in the old town is of great significance. Six typical street canyons in the White Stupa Temple area of Beijing were selected for research to explore spatial characteristics of the street canyon. Microclimate factors such as temperature, humidity, wind speed, and solar radiation were measured on the spot in summer. These factors were combined with two microclimate assessment indexes of physiological equivalent temperature(PET) and wet bulb globe temperature(WBGT) to evaluate the microclimate of the street canyon. In the analysis of the measured data, the mean value comparison method was used to analyze the average values of the microclimate factors in different time periods. Spatial layout of microclimate included the orientation of the canyon, the ratio of the canyon height to canyon width, and green coverage of the canyon, and an in-depth study was made on the coupling relationship between the spatial layout and the microclimate of the canyon. Research results can provide an optimization strategy for the transformation design of the street canyon in White Stupa Temple area, and provide a scientific reference for the research on spatial layout and microclimate improvement in the old town, so as to improve the living quality of residents in the old town.展开更多
From the perspective of humanized design concepts, humanized space design and behavioral psychological needs of users were re-interpreted and analyzed, basic elements and design principles of cultural plaza spatial la...From the perspective of humanized design concepts, humanized space design and behavioral psychological needs of users were re-interpreted and analyzed, basic elements and design principles of cultural plaza spatial layout were proposed. Particularly, application and role of humanized design in the spatial layout of cultural plaza was analyzed, on the basis of which humanized design objective and orientation for the sustainable development of cultural plaza was defined.展开更多
Subways,underground logistics systems and underground parking,as the primary facilities types of underground,contribute significantly to the achievement of carbon–neutral cities by moving surface transportation to un...Subways,underground logistics systems and underground parking,as the primary facilities types of underground,contribute significantly to the achievement of carbon–neutral cities by moving surface transportation to underground,thereby releasing surface space for the creation of more urban blue-green space for carbon sink.Therefore,in-depth studies on carbon neutrality strategies as well as reliable layout optimization solutions of these three types of underground facilities are required.This study proposes a spatial layout optimization strategy for carbon neutrality using underground hydrogen storage and geothermal energy for these three types of underground facilities employing a multi-agent system model.First,three spatial layout relationships,competition,coordination,and followership,between five underground facilities that contribute to emission reduction were investigated.Second,the implementation steps for optimizing the spatial layout of underground facilities were determined by defining the behavioral guidelines for spatial environment,underground facility,and synergistic agent.Finally,using the Tianfu New District in Chengdu City,China,as a case study,layouts of underground facilities under three different underground space development scenarios were simulated to verify the model.The findings of this study address the gap in the research on underground spatial facilities and their layout optimization in response to emission reduction.This study provided a significant reference for the study of underground space and underground resources at the planning level to aid in achieving carbon–neutral cities.展开更多
The current spatial layout of video surveillance in urban residential areas primarily relies on the subjective assessments of personnel,which often results in issues like inadequate surveillance quality and inefficien...The current spatial layout of video surveillance in urban residential areas primarily relies on the subjective assessments of personnel,which often results in issues like inadequate surveillance quality and inefficient resource use.To enhance monitoring effectiveness and ensure the rational allocation of surveillance resources,this paper proposes an optimization method for the spatial layout of residential video surveillance aimed at crime prevention.First,the residential area is divided into grids.From a crime prevention perspective,we construct an expected resource allocation matrix that outlines the demand for surveillance in each grid section.Next,we develop a surveillance resource contribution matrix to illustrate the coverage provided by the video surveillance systems.Additionally,candidate locations for surveillance cameras are identified based on the spatial structure of the residential area,ensuring that buildings do not obstruct the view.Using these components,we establish a spatial layout optimization model for residential video surveillance,which is then solved using a genetic algorithm.Finally,we present a simulation example to demonstrate the model’s applicability and effectiveness in enhancing the quality of residential video surveillance networks while optimizing resource allocation.展开更多
Hospital is an important factor of people’s livelihood security,and the spatial layout of hospitals effectively ensures the medical convenience for residents.Location entropy and mathematical statistical analysis are...Hospital is an important factor of people’s livelihood security,and the spatial layout of hospitals effectively ensures the medical convenience for residents.Location entropy and mathematical statistical analysis are used to study spatial distribution of hospitals.The results display that the distribution of medical facilities in Handan City is at a disadvantage level in Hebei Province,and medical facilities arr concentrated in the plain area.The layout of grade 3A hospitals in Hebei Province is characterized by urban centralization,and it is stronger in the east and weaker in the west.There is no medical facilities in Feixiang District of Handan City,and layout of medical facilities in Hanshan District and Congtai District is at advantage level of Handan City.The built-up area is the influencing factor for the distribution of medical resources.展开更多
Currently,technology,human resources,economic development level and resource endowment determine the spatial layout of China's strategic emerging industries,whose development is dominated by large state-owned ente...Currently,technology,human resources,economic development level and resource endowment determine the spatial layout of China's strategic emerging industries,whose development is dominated by large state-owned enterprises and leading firms.Disparities in the layout of strategic emerging industries are limited for economically developed regions in China but significant for less developed regions.In this context,the Chinese government should be alarmed of repetitive development and excessive input of industrial resources;encourage the development of private capital and prevent the monopoly of state-owned enterprises;adopt a strategy of complementary advantages,and promote industrial relocation for the multi-tiered and non-equilibrium development of strategic emerging industries in China.展开更多
It is of great significance to optimize the spatial matching of basic education facilities in rural areas and promote the equalization of urban and rural basic public services and the overall revitalization of rural a...It is of great significance to optimize the spatial matching of basic education facilities in rural areas and promote the equalization of urban and rural basic public services and the overall revitalization of rural areas.Based on the theory of spatial accessibility and spatial balance of supply and demand,this paper constructs the evaluation system of rural basic education facilities and layout rationality.In this study,we took 42 primary and secondary schools and 2089 rural areas with concentrated population in six township areas of Hancheng City as the research subjects.We used ArcGIS network analysis,population coupling model,and other methods,from the administrative scale and rural population concentration area scale for evaluation.The accessibility of basic education facilities and its coupling relationship with the spatial distribution of student population describe the spatial and geographical pattern of basic education facilities in rural areas.The results show that the accessibility of rural administrative scale and the spatial balance of supply and demand of population concentration area scale are associated with great problems,the differences between towns are obvious,and the overall level of the best performing towns is still low.On the scale of population concentration area,the overall coupling degree is too low,the"dislocation"distribution of educational facilities and student population is obvious,and the matching degree of the student population and school in different towns is significantly different,showing a more obvious"core-periphery"spatial structure characteristics centered on the eastern and southeast regions.The terrain characteristics of rural areas in Shaanxi province are prominent,and the accessibility of the road network is particularly significant.Therefore,optimizing the construction of rural roads and optimizing school layout according to local conditions will become an important solution to promote the balanced allocation of basic education resources in Shaanxi province.展开更多
The spatial organization of the Chinese petrochemical industry was optimized according to the status of development of the industry employing linear programming and ArcGIS spatial analysis tools. We first identified t...The spatial organization of the Chinese petrochemical industry was optimized according to the status of development of the industry employing linear programming and ArcGIS spatial analysis tools. We first identified the indexes of the spatial organization of the petrochemical industry and established a comprehensive evaluation index system that in- cludes four major categories and 11 indicators. The weight of each index was then deter- mined by the analytical hierarchy process. Afterward, taking the 337 Chinese prefecture-level administrations as basic units and scientifically evaluating the potential comprehensive layout coefficients of the cities, 151 prefecture-level administrative units were selected as the basis for the choice of optimization sites with a linear programming model. Secondly, using the 151 prefecture-level administrative units and the maximum-coverage model, the optimal number and spatial distribution of refineries were identified for service radii of 100, 200 and 300 km. Thirdly, considering the actual distribution of China＇s refineries, general rules for the number of refinery layout points and objective values were summarized, and 52 refinery layout points were selected for China. Finally, with ArcGIS spatial analysis tools, the spatial effect of the 52 optimal refinery layout points was simulated for the service scope and socioeconomic factors respectively, and the GDP and population data for each refinery layout point were then ex- tracted within the service scope. On this basis and with estimation of the intensity of crude-oil consumption, final results were obtained for the optimal spatial organization of the Chinese refining capacity and ethylene production capacity.展开更多
In the context of the rapid development of urbanization in China, the development of emerging town shows a high-speed prosperity. This paper describes current situation of the emerging urban green space system and ana...In the context of the rapid development of urbanization in China, the development of emerging town shows a high-speed prosperity. This paper describes current situation of the emerging urban green space system and analyzes different characteristics between current green spaces and the old city or existing urban green space. Considering green space system planning in the downtown area of Gu'an County, advantages of the "network + patch" layout for green space systems in emerging towns are summarized to explore a green space structure suited to these towns.展开更多
Tatural ventilation of indoor air flow and thermal comfort space plays an important role, especial y in the interior design of passive cooling factors, indoor space layout, and the location of doors, windows and other...Tatural ventilation of indoor air flow and thermal comfort space plays an important role, especial y in the interior design of passive cooling factors, indoor space layout, and the location of doors, windows and other factors on the indoor natural ventilation effect has great influence. Using the method of fluid mechanics, and Airpak3.0 software, indoor natural ventilation for residential buildings was simulated, and the thermal comfort of indoor natural ventilation in a residential building in Xuzhou City was analyzed to explore the effect of indoor spatial layout, location of doors, window opening types on indoor natural ventilation. The results showed that indoor spatial layout played an essential role in indoor natural ventilation, application of numerical simulation for the simulation of the indoor natural ventilation and assessment of indoor natural ventilation effect was a scientific instruction for the indoor spatial design.展开更多
基金funded by the Foundation for Innovative Research Groups of the National Natural Science Foundation of China(Grant No.72221002)the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDA28060200)National Natural Science Foundation of Youth Project(Grant No.72303087).
文摘In the new phase of sustainable development,agriculture is seeking sustainable management of the water-land-energy-economy-environment-food nexus.At present,there are few studies on optimizing crop planting structure and analyzing its spatial layout with consideration of natural and socio-economic factors.Herein,we proposed a framework for addressing this issue.In this framework,the NSGA-II algorithm was used to construct the multi-objective optimization model of crop planting structures with consideration of water and energy consumption,greenhouse gas(GHG)emissions,economic benefits,as well as food,land,and water security constraints,while the model for planting spatial layout optimization was established with consideration of crop suitability using the MaxEnt model and the improved Hungarian algorithm.This framework was further applied in the Black Soil Region of Northeast China(BSRNC)for analyzing optimized crop planting structures and spatial layouts of three main crops(rice,maize,and soybean)under various scenarios.This study showed that the sown area of rice in the BSRNC decreased by up to 40.73%and 35.30%in the environmental priority scenario and economic-environmental balance scenario,respectively,whereas that of soybean increased by up to 112.44%and 63.31%,respectively.In the economic priority scenario,the sown area of rice increased by up to 93.98%.Expanding the sown area of soybean was effective in reducing GHG emissions.On the contrary,rice production led to greater environmental costs though it provided higher economic returns.Among the three crops,maize exhibited an advantage in balancing environmental and economic benefits.Hegang-Jixi area in the northeast of the BSRNC was identified as the key area with the most intense crop planting transfer among different scenarios.Overall,this framework provides a new methodology for optimizing crop planting structures and spatial layouts with con-sideration of the nexus of various factors.Moreover,the case study demonstrates the applicability and expansion potential of the framework in the fields of sustainable agricultural development and food security assurance.
基金National Natural Science Foundation of China, No.40971101 Know/edge Innovation Project of the Chinese Academy of Sciences, No.KZCX2-YW-321-05
文摘The suitability evaluation of population and settlements spatial layout in the mountainous areas is an important basis on which the scale of population and settlement after Wenchuan Earthquake is determined. Based on the statistical data of field research, this paper chooses 1264 towns in 51 counties as the scope of evaluation, selects eight indices in the evaluation index system which includes post-disaster population scale, population density, urbanization rate, the percentage of migrant workers, death rate by earthquake, the percentage of minorities, elevation-slope integrated terrain and comprehensive geological condition. Besides, this paper uses AHP supported by entropy technique and fuzzy membership function model to calculate the suitability evaluation index and then divides the disaster areas into five types： highly suitable area （area accounted for 11.03%）, relatively highly suitable area （15.29%）, moderately suitable area （29%）, less suitable area （30.08%） and unsuitable area （14.6%）. According to the result of suitability evaluation, this paper puts forward several suggestions for the reconstruction as follows： the urban system and the building of new countryside should be guided by the suitability evaluation subareas; post-earthquake reconstruction avoids zones near Longmenshan fracture and high-mountain gorge areas as far as possible; the scale of population and settlement should not exceed the capacity of resources and environment; population should be resettled as close as possible by considering adequately the heterogenicity and homogeneity of regional nationality culture characteristics; densely resettle the people at plains and hilly areas; encourage the migrant workers settle in the working place with their families voluntarily; and urban system reconstruction such as industry layout and important projects of lifeline should be guided by the spatial layout suitability evaluation.
基金funded by Natural Science Foundation of Beijing City (4102022)Science and Technology Project of Minjiang University (YKQ09003)
文摘The problems of spatial layout in livestock and poultry farms were discussed, and the development status of the planning evaluation on the spatial layout in recent years was systematically reviewed. The research progress in planning evaluation systems and methods was mainly intro- duced. And some opinions were proposed to solve these problems.
文摘Private garden is one of the three major garden styles in China,the artistic achievements of which have devoted remarkable contributions to the development of global landscape architecture.Through studying the spatial layout of private gardens,the authors further analyzed three ways of landscape layouts,specifically,separated scenery,winding scenery and borrowed scenery.Concrete examples were taken to demonstrate the connotations and application skills of such three layouts,in order to benefit the inheritance and development of traditional Chinese garden art.
基金Supported by Scientific Research Programs of Huaihua University(HHUY2008-30)~~
文摘With the investigation of the current situation of tourism activities and characteristics of recreational tourism spatial layout in Huaihua,problems in tourism spatial layout are pointed out,that is,indistinct division of tourism functions,comparatively bad relevance in the "point-axle" spatial structure,and comparatively bad horizontal and vertical coherence in tourism space.It is suggested to rationally construct tourism spatial layout in Huaihua City after the model of spatial layered structure of recreational sightseeing,that is,the model of setting Huaihua City as the center,and from the inside out with three layers of recreational island within the city,recreational sites around the city and recreational sites at towns and villages away from the city through the spatial layout of point,axis and plane.
基金Sponsored by Jiangxi Provincial Soft Science Research Program(20131562040003)"Twelfth Five-year Plan"General Project of Jiangxi Provincial Social Science Research Program
文摘As China enters the aging society, the old-age care problems have grown increasingly serious. Influenced by the only-child policy, traditional old-age support system fails to adapt to new social situation, the institutions have become major subjects in the future old-age support system. Researches on the elderly-fi t architectural design have achieved many fruits, but those on the landscape design of the elderly community has been less reported. This paper studied landscape design of the old-age support institutions from the perspective of both theory and practice, and tried to explore the spatial layout of environmental landscapes in the elderly community. On the basis of sorting out specifi c psychological needs of the elderly group in China and their needs for the layout of landscape spaces, this paper proposed some effective solutions in view of successful elderly communities in overseas countries, then analyzed the development of elderly communities in China, so as to fi gure out landscape design approaches capable of promoting physical and mental health of the elderly group in the old-age support institutions.
文摘The stmctufe types of the waterfront settlements in the north of Jiangxi Province were analyzed. According to the relationship between location and water, die waterfront setdements in northern Jiangxi were classified into tiiree categofies. The structuial commonalities of the three kinds of waterfront settlements were cleady interpreted. On this basis and combined with the field research data and relevant data, the characteristics of the waterfront setdements in northern Jiangxi were summarized： treating water as the main skeleton, choosing location by the distance ￡com watet, magnetic effect and organic textute. The characteiistic space of watetfront settLemeiits found in the investigation process was classified and elaborated, which has certain reference significance for tiie space study of waterfront settlements.
基金Sponsored by National Natural Science Foundation of China(51508004)Service Capacity Building of Scientific and Technological Innovation-Raising the Quota Level of Scientific Research-Research Institute of Building Systems(PXM2017_014212_000005)+1 种基金Science and Technology Plans of the Ministry of Housing and Urban-Rural Development of the People’s Republic of ChinaOpening Projects of Beijing Advanced Innovation Center for Future Urban Design,Beijing University of Civil Engineering and Architecture(UDC2017030712)
文摘With the rapid urbanization, many high-rise buildings and new districts have been built continuously. However, the old town of cities has gradually been forgotten by people and its environment is becoming increasingly harsh. The old town usually has diversified space and function. As an important part of the old town, the street canyon that is closely related to human settlements is a public space where people communicate and do activities. Therefore, research on microclimate-based improvement of the street canyon in the old town is of great significance. Six typical street canyons in the White Stupa Temple area of Beijing were selected for research to explore spatial characteristics of the street canyon. Microclimate factors such as temperature, humidity, wind speed, and solar radiation were measured on the spot in summer. These factors were combined with two microclimate assessment indexes of physiological equivalent temperature(PET) and wet bulb globe temperature(WBGT) to evaluate the microclimate of the street canyon. In the analysis of the measured data, the mean value comparison method was used to analyze the average values of the microclimate factors in different time periods. Spatial layout of microclimate included the orientation of the canyon, the ratio of the canyon height to canyon width, and green coverage of the canyon, and an in-depth study was made on the coupling relationship between the spatial layout and the microclimate of the canyon. Research results can provide an optimization strategy for the transformation design of the street canyon in White Stupa Temple area, and provide a scientific reference for the research on spatial layout and microclimate improvement in the old town, so as to improve the living quality of residents in the old town.
文摘From the perspective of humanized design concepts, humanized space design and behavioral psychological needs of users were re-interpreted and analyzed, basic elements and design principles of cultural plaza spatial layout were proposed. Particularly, application and role of humanized design in the spatial layout of cultural plaza was analyzed, on the basis of which humanized design objective and orientation for the sustainable development of cultural plaza was defined.
基金supported by the National Natural Science Foundation of China(Grant Nos.52378083 and 52078481)the Natural Science Foundation of Jiangsu Province(Grant No.BK20231488).
文摘Subways,underground logistics systems and underground parking,as the primary facilities types of underground,contribute significantly to the achievement of carbon–neutral cities by moving surface transportation to underground,thereby releasing surface space for the creation of more urban blue-green space for carbon sink.Therefore,in-depth studies on carbon neutrality strategies as well as reliable layout optimization solutions of these three types of underground facilities are required.This study proposes a spatial layout optimization strategy for carbon neutrality using underground hydrogen storage and geothermal energy for these three types of underground facilities employing a multi-agent system model.First,three spatial layout relationships,competition,coordination,and followership,between five underground facilities that contribute to emission reduction were investigated.Second,the implementation steps for optimizing the spatial layout of underground facilities were determined by defining the behavioral guidelines for spatial environment,underground facility,and synergistic agent.Finally,using the Tianfu New District in Chengdu City,China,as a case study,layouts of underground facilities under three different underground space development scenarios were simulated to verify the model.The findings of this study address the gap in the research on underground spatial facilities and their layout optimization in response to emission reduction.This study provided a significant reference for the study of underground space and underground resources at the planning level to aid in achieving carbon–neutral cities.
基金Funded by Research Project of the Chinese Society of Criminology in 2022 (Key)(FZXXH2022B03)Science and Technology Development Project of China Railway Sixth Institute Group Co.,Ltd.(Key)(ky202423)Research Project on Innovative Development of Social Sciences in Anhui Province (2020CX033)。
文摘The current spatial layout of video surveillance in urban residential areas primarily relies on the subjective assessments of personnel,which often results in issues like inadequate surveillance quality and inefficient resource use.To enhance monitoring effectiveness and ensure the rational allocation of surveillance resources,this paper proposes an optimization method for the spatial layout of residential video surveillance aimed at crime prevention.First,the residential area is divided into grids.From a crime prevention perspective,we construct an expected resource allocation matrix that outlines the demand for surveillance in each grid section.Next,we develop a surveillance resource contribution matrix to illustrate the coverage provided by the video surveillance systems.Additionally,candidate locations for surveillance cameras are identified based on the spatial structure of the residential area,ensuring that buildings do not obstruct the view.Using these components,we establish a spatial layout optimization model for residential video surveillance,which is then solved using a genetic algorithm.Finally,we present a simulation example to demonstrate the model’s applicability and effectiveness in enhancing the quality of residential video surveillance networks while optimizing resource allocation.
基金Sponsored by the Construction Project of Postgraduate Demonstration Course in Hebei Province (KCJSX2020081)。
文摘Hospital is an important factor of people’s livelihood security,and the spatial layout of hospitals effectively ensures the medical convenience for residents.Location entropy and mathematical statistical analysis are used to study spatial distribution of hospitals.The results display that the distribution of medical facilities in Handan City is at a disadvantage level in Hebei Province,and medical facilities arr concentrated in the plain area.The layout of grade 3A hospitals in Hebei Province is characterized by urban centralization,and it is stronger in the east and weaker in the west.There is no medical facilities in Feixiang District of Handan City,and layout of medical facilities in Hanshan District and Congtai District is at advantage level of Handan City.The built-up area is the influencing factor for the distribution of medical resources.
基金Supported by National Natural Science Foundation of China project "Spatial layout and development path of China's strategic emerging industries"(Grant No.71273276)
文摘Currently,technology,human resources,economic development level and resource endowment determine the spatial layout of China's strategic emerging industries,whose development is dominated by large state-owned enterprises and leading firms.Disparities in the layout of strategic emerging industries are limited for economically developed regions in China but significant for less developed regions.In this context,the Chinese government should be alarmed of repetitive development and excessive input of industrial resources;encourage the development of private capital and prevent the monopoly of state-owned enterprises;adopt a strategy of complementary advantages,and promote industrial relocation for the multi-tiered and non-equilibrium development of strategic emerging industries in China.
文摘It is of great significance to optimize the spatial matching of basic education facilities in rural areas and promote the equalization of urban and rural basic public services and the overall revitalization of rural areas.Based on the theory of spatial accessibility and spatial balance of supply and demand,this paper constructs the evaluation system of rural basic education facilities and layout rationality.In this study,we took 42 primary and secondary schools and 2089 rural areas with concentrated population in six township areas of Hancheng City as the research subjects.We used ArcGIS network analysis,population coupling model,and other methods,from the administrative scale and rural population concentration area scale for evaluation.The accessibility of basic education facilities and its coupling relationship with the spatial distribution of student population describe the spatial and geographical pattern of basic education facilities in rural areas.The results show that the accessibility of rural administrative scale and the spatial balance of supply and demand of population concentration area scale are associated with great problems,the differences between towns are obvious,and the overall level of the best performing towns is still low.On the scale of population concentration area,the overall coupling degree is too low,the"dislocation"distribution of educational facilities and student population is obvious,and the matching degree of the student population and school in different towns is significantly different,showing a more obvious"core-periphery"spatial structure characteristics centered on the eastern and southeast regions.The terrain characteristics of rural areas in Shaanxi province are prominent,and the accessibility of the road network is particularly significant.Therefore,optimizing the construction of rural roads and optimizing school layout according to local conditions will become an important solution to promote the balanced allocation of basic education resources in Shaanxi province.
基金China Postdoctoral Science Foundation, No.2011M500375 National Natural Science Foundation of China, No.40635026 Knowledge Innovation Program of the Chinese Academy of Sciences, No.KZCXZ-YW-Q10-4
文摘The spatial organization of the Chinese petrochemical industry was optimized according to the status of development of the industry employing linear programming and ArcGIS spatial analysis tools. We first identified the indexes of the spatial organization of the petrochemical industry and established a comprehensive evaluation index system that in- cludes four major categories and 11 indicators. The weight of each index was then deter- mined by the analytical hierarchy process. Afterward, taking the 337 Chinese prefecture-level administrations as basic units and scientifically evaluating the potential comprehensive layout coefficients of the cities, 151 prefecture-level administrative units were selected as the basis for the choice of optimization sites with a linear programming model. Secondly, using the 151 prefecture-level administrative units and the maximum-coverage model, the optimal number and spatial distribution of refineries were identified for service radii of 100, 200 and 300 km. Thirdly, considering the actual distribution of China＇s refineries, general rules for the number of refinery layout points and objective values were summarized, and 52 refinery layout points were selected for China. Finally, with ArcGIS spatial analysis tools, the spatial effect of the 52 optimal refinery layout points was simulated for the service scope and socioeconomic factors respectively, and the GDP and population data for each refinery layout point were then ex- tracted within the service scope. On this basis and with estimation of the intensity of crude-oil consumption, final results were obtained for the optimal spatial organization of the Chinese refining capacity and ethylene production capacity.
文摘In the context of the rapid development of urbanization in China, the development of emerging town shows a high-speed prosperity. This paper describes current situation of the emerging urban green space system and analyzes different characteristics between current green spaces and the old city or existing urban green space. Considering green space system planning in the downtown area of Gu'an County, advantages of the "network + patch" layout for green space systems in emerging towns are summarized to explore a green space structure suited to these towns.
文摘Tatural ventilation of indoor air flow and thermal comfort space plays an important role, especial y in the interior design of passive cooling factors, indoor space layout, and the location of doors, windows and other factors on the indoor natural ventilation effect has great influence. Using the method of fluid mechanics, and Airpak3.0 software, indoor natural ventilation for residential buildings was simulated, and the thermal comfort of indoor natural ventilation in a residential building in Xuzhou City was analyzed to explore the effect of indoor spatial layout, location of doors, window opening types on indoor natural ventilation. The results showed that indoor spatial layout played an essential role in indoor natural ventilation, application of numerical simulation for the simulation of the indoor natural ventilation and assessment of indoor natural ventilation effect was a scientific instruction for the indoor spatial design.
