This study investigates community identity in Nanjing’s historic Hehuatang community during urban renewal,revealing tensions between heritage preservation and modernization.Through ethnographic research,three key fac...This study investigates community identity in Nanjing’s historic Hehuatang community during urban renewal,revealing tensions between heritage preservation and modernization.Through ethnographic research,three key factors are identified shaping identity:(i)material conditions including series of spatial conflicts around overcrowding,(ii)social tensions such as tenant-aborigine divides and generational misunderstanding,and(iii)institutional governance as top-down policies would exacerbate distrust.Despite 82%of residents expressing place attachment,67%desire relocation due to deteriorating liveability—a paradox highlighting the failure of China’s contemporary performative participation models.The adapted three-layer creativity model underscores the need to reconcile physical renewal with social equity.Findings advocate for co-design processes that integrate resident agency,offering lessons for sustainable urban renewal in rapidly developing contexts.展开更多
Urban lakes,situated in cities characterized by dense population and economic activities,are susceptible to eutrophication.This study focuses on the water ecological restoration project of Xuanwu Lake,assessing the ef...Urban lakes,situated in cities characterized by dense population and economic activities,are susceptible to eutrophication.This study focuses on the water ecological restoration project of Xuanwu Lake,assessing the efficacy of ecological management through laboratory analysis of water quality indicators.Furthermore,it delves into a comprehensive life cycle cost structure analysis,ecosystem service value accounting,and economic benefit evaluation.From an economic standpoint,the research examines the cost-effectiveness and external impacts of the clear-water ecosystem restoration project.Findings indicate that TP and TN levels in the treated area have decreased by over 50%,substantially reducing the eutrophication index.The cost-benefit ratio for each unit of treatment stands at 1:3.2(direct benefit).Notably,the restoration has markedly improved water quality and augmented the value of ecosystem services,demonstrating long-term cost sustainability and positive economic externalities.To ensure the sustained success of such restorations,it is imperative to optimize public resource allocation,incorporate market-based incentives,and furnish economic insights for managing urban lakes.展开更多
The Institute of Soil Science(ISS)located at Nanjing is an academic community directly affiliated with the Chinese Academy of Sciences(CAS).Being the cradle,research center,and talent highland of modern soil science i...The Institute of Soil Science(ISS)located at Nanjing is an academic community directly affiliated with the Chinese Academy of Sciences(CAS).Being the cradle,research center,and talent highland of modern soil science in China,the institute is committed to promoting the development of soil science and to solving vital problems facing agricultural development,ecological conservation,and environmental protection.展开更多
The Institute of Soil Science(ISS)located at Nanjing is an academic community directly affiliated with the Chinese Academy of Sciences(CAS).Being the cradle,research center,and talent highland of modern soil science i...The Institute of Soil Science(ISS)located at Nanjing is an academic community directly affiliated with the Chinese Academy of Sciences(CAS).Being the cradle,research center,and talent highland of modern soil science in China,the institute is committed to promoting the development of soil science and to solving vital problems facing agricultural development,ecological conservation,and environmental protection.展开更多
The metropolitan area is a crucial spatial element in promoting new urbanization in China.It possesses theoretical and empirical value in the determination of the evolutionary patterns and development trends necessary...The metropolitan area is a crucial spatial element in promoting new urbanization in China.It possesses theoretical and empirical value in the determination of the evolutionary patterns and development trends necessary for regional integration and high-quality development.This study focused on Nanjing Metropolitan Area,the first national metropolitan area in China,and established three development scenarios by combining ecological–economic spatial conflict(EESC)zones and national key ecological functional areas.These scenarios simulate the spatial distribution of future land use and land cover change(LUCC)using the development zone planning function of the patch generation land use simulation(PLUS)model.The results show that:(1)Between 2000 and 2020,the most prominent characteristics of land use change were largely the massive expansion of built-up land and the significant decline of farmland,while changes in the area of ecological land were less evident.(2)EESC areas experienced significant changes over the past 20 years,but the overall level of conflict was low.Ecological land was the main land use type in the lowest-conflict area,while built-up land was the main land use type in the highest-conflict area.(3)From 2030 to 2050,further expansion of built-up areas is expected,with continued decrease of farmland.The regulation of these land use changes can be achieved through different development zone plans.The economic development scenario had the largest built-up land area,while the ecological protection scenario had the largest farmland area.This study simulates the spatial pattern changes in the metropolitan area based on spatial conflict patterns and national main functional area planning process,providing a scientific reference for future spatial planning and management.展开更多
The rise in online home delivery services(OHDS)has had a significant impact on how urban services are supplied and used in recent years.Studies on the spatial accessibility of OHDS are emerging,but few is known about ...The rise in online home delivery services(OHDS)has had a significant impact on how urban services are supplied and used in recent years.Studies on the spatial accessibility of OHDS are emerging,but few is known about the temporal dimension of OHDS accessibility as well as the geographic and socioeconomic differences in the spatiotemporal accessibility of OHDS.This study measures the spatiotemporal accessibility of four types of OHDS,namely leisure,fresh and convenient,medical,and catering services.The geographic and socioeconomic disparities in the spatiotemporal accessibility of these four types of OHDS are then identified using spatial statistical methods and the Kruskal-Wallis test(K-W test).The case study in Nanjing,China,suggests that:1)spatiotemporal accessibility better reflects the temporal variation of OHDS accessibility and avoids overestimation of OHDS accessibility when only considering its spatial dimension.2)The spatiotemporal accessibility of OHDS varies geographically and socioeconomically.Neighborhoods located in the main city or neighborhoods with higher housing prices,higher population density,and higher point of interest(POI)mix have better OHDS spatiotemporal accessibility.Our study contributes to the understanding of OHDS accessibility from a spatiotemporal perspective,and the empirical insights can assist policymakers in creating intervention plans that take into account variations in OHDS spatiotemporal accessibility.展开更多
The Institute of Soil Science(ISS)located at Nanjing is an academic community directly affiliated with the Chinese Academy of Sciences(CAS).Being the cradle,research center,and talent highland of modern soil science i...The Institute of Soil Science(ISS)located at Nanjing is an academic community directly affiliated with the Chinese Academy of Sciences(CAS).Being the cradle,research center,and talent highland of modern soil science in China,the institute is committed to promoting the development of soil science and to solving vital problems facing agricultural development.展开更多
Transactions of Nanjing University of Aeronautics&Astronautics (TNUAA) is a bimonthly journal facing international academic community.Emphasizing prompt and effective dissemination of key data and new scientific i...Transactions of Nanjing University of Aeronautics&Astronautics (TNUAA) is a bimonthly journal facing international academic community.Emphasizing prompt and effective dissemination of key data and new scientific insights,TNUAA publishes experimental and theoretical papers bearing on applications to all branches of aeronautics, astronautics and civil aviation.展开更多
The IEC Promotion Center(Nanjing)signed a development cooperation agreement with State Grid Fujian Electric Power Co.,Ltd.on April 23 in Nanjing city,Jiangsu province.The signing ceremony was witnessed by Shu Yinbiao,...The IEC Promotion Center(Nanjing)signed a development cooperation agreement with State Grid Fujian Electric Power Co.,Ltd.on April 23 in Nanjing city,Jiangsu province.The signing ceremony was witnessed by Shu Yinbiao,the 36th President of IEC,Academician of Chinese Academy of Engineering,and President of Chinese Society for Electrical Engineering,Ruan Qiantu,Chair of the Board and Party Secretary of State Grid Fujian Electric Power Co.,Ltd.,Shan Shewu,Chair of the Board and Party Secretary of NARI Group,as well as Fan Xiangqian and Yu Qing,Director and Deputy Director of Management Committee of Nanjing Chilin Technology Innovation Park.展开更多
The effective identification and protection of ecological spaces is a fundamental cornerstone for achieving sustainable development and promoting a green society.It plays an indispensable role in ecological protection...The effective identification and protection of ecological spaces is a fundamental cornerstone for achieving sustainable development and promoting a green society.It plays an indispensable role in ecological protection,resource management,and environmental governance,and is of great significance for the sustainable development of human society.Rapid and scientific identification of ecological spaces provides a scientific foundation for regional ecological protection planning.In this study,we used survey data from the planning and design of forest resources alongside 2017 Landsat 8 OLI remote sensing image to comprehensively analyze forest ecological service functions and ecological sensitivity using the layer-cake model to identify ecological spaces in Nanjing City.The results show that the area of extremely important forest ecological service function zones in Nanjing was 288.57 km^(2),accounting for 3.47%of the total area of Nanjing.The area of highly sensitive zones in Nanjing was 464.39 km^(2),accounting for 7.05%.Considering both forest ecological service functions and sensitivity,the area of core ecological spaces in Nanjing was 692.86 km^(2),accounting for 10.52%of the total area,and the main land use types were woodland and waters.The area of transitional ecological space in Nanjing was the largest,reaching 3150.29 km^(2),accounting for 47.83%of Nanjing s total area.This study provides valuable insights for optimizing the layout of ecological spaces and serves as a reference for related research efforts.展开更多
Based on the thorough investigation of the components of urban forest in Nanjing and the collection of samples,it is concluded that there are 1 500 species(including subspecies) of vascular plants belonging to 572 gen...Based on the thorough investigation of the components of urban forest in Nanjing and the collection of samples,it is concluded that there are 1 500 species(including subspecies) of vascular plants belonging to 572 genera of 172 families,among which there are 63 species of ferns belonging to 36 genera of 25 families,1 437 species of seed plants belonging to 536 genera of 147 families.The characteristics are that the flora is rich in species,complex in geographic composition,and possess the distinct transferring quality from tropical to temperate zone.Besides,it is characterized with certain ancient nature,and the peculiar elements are comparatively simple.展开更多
The background and connotations of smart growth theories of America were introduced first,spatial expansion features of Nanjing City were summarized as the following 3 points:population growth,expansion of urban space...The background and connotations of smart growth theories of America were introduced first,spatial expansion features of Nanjing City were summarized as the following 3 points:population growth,expansion of urban spaces and industrial expansion.And then problems emerged in the spatial expansion were pointed out as:A."Sprawl" in the urban development;B.Improper internal spatial structure of the city;C.Destructed historical and cultural context of the city.Smart growth theories were applied in this study to analyze potential problems in the spatial expansion of Nanjing,corresponding countermeasures were given as:defining proper growth boundaries,restricting total growth volume,saving land;strictly controlling growth intensity,fully utilizing resources,intensively using land;scientifically evaluating growth benefits,promoting recycling of resources,and realizing sustainable growth.By learning from overseas smart growth theories,the authors hoped to provide useful references for the overall land use planning and urban planning of Nanjing City.展开更多
[Objective] This study was performed to determine the effects of sowing dates and sites on grain quality and Rapid Viscosity Analyzer （RVA） profile of Nan-jing 46. [Method] The field experiments were carried out at ...[Objective] This study was performed to determine the effects of sowing dates and sites on grain quality and Rapid Viscosity Analyzer （RVA） profile of Nan-jing 46. [Method] The field experiments were carried out at five sites in Jiangsu Province, and in every site, the seeds were sowing on seven different dates. RVA related indices were measured after harvest. [Result] Along with the delay of sowing date, the mil ing quality of Nanjing 46 increased at first and then reduced, while its appearance quality went up and the cooling and edible quality decreased. With the sowing sites moving southward, the rice mil ing quality, appearance quality, and cooling and edible quality of Nanjing 46 decreased at first and then increased. Grain traits responded variably to the sowing dates and sites. The brown rice rate, grain width, grain length, length/width, mil ed rice rate and head mil ed rice rate were less affected, while the chalky rice rate and chalkiness degree were more af-fected. The gelatinization temperature, protein content, amylose content, gel consis-tency and eating value were in-between. The RVA profile analysis revealed that the breakdown value, setback value and pasting temperature were affected by the sow-ing date and geographical environment. The peak viscosity, hot viscosity, cool vis-cosity and peak time were influenced more by geographical environment. With the delay of the sowing date, peak viscosity, hot viscosity, cool viscosity, setback value and pasting temperature decreased at first and then increased, while the breakdown value changed inversely, and the peak time did not exhibit a regular trend. With the decrease of latitude, the peak viscosity, hot viscosity, breakdown and cool viscosity declined at first and then increased, the setback value and peak time decreased, while the pasting temperature increased. [Conclusion] This study wil provide refer-ences for the effective production of Nanjing 46.展开更多
According to data in Nanjing Statistical Yearbook, contribution made by agricultural production factors was analyzed with contribution models of agricultural factors and the results showed that with restriction of lab...According to data in Nanjing Statistical Yearbook, contribution made by agricultural production factors was analyzed with contribution models of agricultural factors and the results showed that with restriction of labor force and land, Nanjing suburban counties have entered into a stage of ＂high input-high output＂, considering no matter from agricultural total value of output or from agricultural added value. In future, structure configuration of agricultural input factors should be optimized in Nanjing suburban counties by technology input to improve agricultural technology and technical efficiency in order to further achieve sustainable development of agriculture.展开更多
The quantitative analysis method was used to measure the tourism image of Nanjing waterfront to make clear its composition.An evaluation method was also adopted in terms of cognitive image,affective image and the whol...The quantitative analysis method was used to measure the tourism image of Nanjing waterfront to make clear its composition.An evaluation method was also adopted in terms of cognitive image,affective image and the whole image,which may offer some references for the evaluation of other tourism images in urban waterfront of the same kind.展开更多
10 temple courtyards and 10 temple gardens were chosen as the research object in Nanjing.There were 146 species of vascular plants(including variety),which belong to 96 genera and 63 families.The Richness index,Simpso...10 temple courtyards and 10 temple gardens were chosen as the research object in Nanjing.There were 146 species of vascular plants(including variety),which belong to 96 genera and 63 families.The Richness index,Simpson index,Species diversity and Similarity index of the plant community were analyzed.The results showed:①The dominant species of temple courtyards and temple gardens were all trees;the density of shrub layer(0.32 strains/m2) was greater than that of the tree layer(0.21 strains/m2).And the density of tree layer(2.4 strains/m2) and shrub layer(4.5 strains/m2) in temple gardens were totally higher than those of temple courtyards.②Both the Simpson index and the Species diversity in temple garden plots were higher than those of the temple courtyard plots;The Pielou index was at a higher level both in tree layer and shrub layer,which indicated that quantities of each tree species were on an average level.③The Similarity index in temple gardens was higher than that of the temple courtyards,both less than 50%,which indicated that the repetition rate of each tree species was obviously greater in temple gardens than in temple courtyards.展开更多
From the perspective of senior citizens,questionnaire survey and field investigation were carried on and analyzed in three parks in Nanjing City.The results showed that outdoor activities are the principal ways for th...From the perspective of senior citizens,questionnaire survey and field investigation were carried on and analyzed in three parks in Nanjing City.The results showed that outdoor activities are the principal ways for the senior citizens to spend their time,the parks near home is their prior choice,and the radiation range of the park and greenbelt mostly is no more than 2 km;most of the senior citizens come to parks on foot and the parks are always within 30 minutes walking distance;the senior citizens always have fixed partners and groups for their exercise-dominant activities.展开更多
To study the relationship between the enlargement of Nanjing City and urban greenhouse effect,the temperature of Nanjing Station and its suburban stations during 1961-2000 was analyzed.The results showed that the temp...To study the relationship between the enlargement of Nanjing City and urban greenhouse effect,the temperature of Nanjing Station and its suburban stations during 1961-2000 was analyzed.The results showed that the temperature of Nanjing area has increased gradually and the urban heat island effect has developed quickly.The average temperature increment in winter is the greatest,followed by that in spring,autumn and summer,most of which was caused by the greenhouse effect in Nanjing area.Finally several effective countermeasures have been proposed correspondingly.展开更多
Urban park is an important outdoor leisure space for urban citizens. The public facility in urban park is a functional environmental element connecting human beings and environment. Through analyzing the present situa...Urban park is an important outdoor leisure space for urban citizens. The public facility in urban park is a functional environmental element connecting human beings and environment. Through analyzing the present situation and application of public facilities in urban parks of Nanjing City, the existing problems and countermeasures were pointed out, in order to provide theoretical references for the construction of public facility in the urban parks.展开更多
基金Sponsored by The National Social Science Fundation of China(24BGL216).
文摘This study investigates community identity in Nanjing’s historic Hehuatang community during urban renewal,revealing tensions between heritage preservation and modernization.Through ethnographic research,three key factors are identified shaping identity:(i)material conditions including series of spatial conflicts around overcrowding,(ii)social tensions such as tenant-aborigine divides and generational misunderstanding,and(iii)institutional governance as top-down policies would exacerbate distrust.Despite 82%of residents expressing place attachment,67%desire relocation due to deteriorating liveability—a paradox highlighting the failure of China’s contemporary performative participation models.The adapted three-layer creativity model underscores the need to reconcile physical renewal with social equity.Findings advocate for co-design processes that integrate resident agency,offering lessons for sustainable urban renewal in rapidly developing contexts.
文摘Urban lakes,situated in cities characterized by dense population and economic activities,are susceptible to eutrophication.This study focuses on the water ecological restoration project of Xuanwu Lake,assessing the efficacy of ecological management through laboratory analysis of water quality indicators.Furthermore,it delves into a comprehensive life cycle cost structure analysis,ecosystem service value accounting,and economic benefit evaluation.From an economic standpoint,the research examines the cost-effectiveness and external impacts of the clear-water ecosystem restoration project.Findings indicate that TP and TN levels in the treated area have decreased by over 50%,substantially reducing the eutrophication index.The cost-benefit ratio for each unit of treatment stands at 1:3.2(direct benefit).Notably,the restoration has markedly improved water quality and augmented the value of ecosystem services,demonstrating long-term cost sustainability and positive economic externalities.To ensure the sustained success of such restorations,it is imperative to optimize public resource allocation,incorporate market-based incentives,and furnish economic insights for managing urban lakes.
文摘The Institute of Soil Science(ISS)located at Nanjing is an academic community directly affiliated with the Chinese Academy of Sciences(CAS).Being the cradle,research center,and talent highland of modern soil science in China,the institute is committed to promoting the development of soil science and to solving vital problems facing agricultural development,ecological conservation,and environmental protection.
文摘The Institute of Soil Science(ISS)located at Nanjing is an academic community directly affiliated with the Chinese Academy of Sciences(CAS).Being the cradle,research center,and talent highland of modern soil science in China,the institute is committed to promoting the development of soil science and to solving vital problems facing agricultural development,ecological conservation,and environmental protection.
基金National Natural Science Foundation of China,No.42371185National Science Fund for Distinguished Young Scholars,No.41901151。
文摘The metropolitan area is a crucial spatial element in promoting new urbanization in China.It possesses theoretical and empirical value in the determination of the evolutionary patterns and development trends necessary for regional integration and high-quality development.This study focused on Nanjing Metropolitan Area,the first national metropolitan area in China,and established three development scenarios by combining ecological–economic spatial conflict(EESC)zones and national key ecological functional areas.These scenarios simulate the spatial distribution of future land use and land cover change(LUCC)using the development zone planning function of the patch generation land use simulation(PLUS)model.The results show that:(1)Between 2000 and 2020,the most prominent characteristics of land use change were largely the massive expansion of built-up land and the significant decline of farmland,while changes in the area of ecological land were less evident.(2)EESC areas experienced significant changes over the past 20 years,but the overall level of conflict was low.Ecological land was the main land use type in the lowest-conflict area,while built-up land was the main land use type in the highest-conflict area.(3)From 2030 to 2050,further expansion of built-up areas is expected,with continued decrease of farmland.The regulation of these land use changes can be achieved through different development zone plans.The economic development scenario had the largest built-up land area,while the ecological protection scenario had the largest farmland area.This study simulates the spatial pattern changes in the metropolitan area based on spatial conflict patterns and national main functional area planning process,providing a scientific reference for future spatial planning and management.
基金Under the auspices of National Natural Science Foundation of China (No.42330510)。
文摘The rise in online home delivery services(OHDS)has had a significant impact on how urban services are supplied and used in recent years.Studies on the spatial accessibility of OHDS are emerging,but few is known about the temporal dimension of OHDS accessibility as well as the geographic and socioeconomic differences in the spatiotemporal accessibility of OHDS.This study measures the spatiotemporal accessibility of four types of OHDS,namely leisure,fresh and convenient,medical,and catering services.The geographic and socioeconomic disparities in the spatiotemporal accessibility of these four types of OHDS are then identified using spatial statistical methods and the Kruskal-Wallis test(K-W test).The case study in Nanjing,China,suggests that:1)spatiotemporal accessibility better reflects the temporal variation of OHDS accessibility and avoids overestimation of OHDS accessibility when only considering its spatial dimension.2)The spatiotemporal accessibility of OHDS varies geographically and socioeconomically.Neighborhoods located in the main city or neighborhoods with higher housing prices,higher population density,and higher point of interest(POI)mix have better OHDS spatiotemporal accessibility.Our study contributes to the understanding of OHDS accessibility from a spatiotemporal perspective,and the empirical insights can assist policymakers in creating intervention plans that take into account variations in OHDS spatiotemporal accessibility.
文摘The Institute of Soil Science(ISS)located at Nanjing is an academic community directly affiliated with the Chinese Academy of Sciences(CAS).Being the cradle,research center,and talent highland of modern soil science in China,the institute is committed to promoting the development of soil science and to solving vital problems facing agricultural development.
文摘Transactions of Nanjing University of Aeronautics&Astronautics (TNUAA) is a bimonthly journal facing international academic community.Emphasizing prompt and effective dissemination of key data and new scientific insights,TNUAA publishes experimental and theoretical papers bearing on applications to all branches of aeronautics, astronautics and civil aviation.
文摘The IEC Promotion Center(Nanjing)signed a development cooperation agreement with State Grid Fujian Electric Power Co.,Ltd.on April 23 in Nanjing city,Jiangsu province.The signing ceremony was witnessed by Shu Yinbiao,the 36th President of IEC,Academician of Chinese Academy of Engineering,and President of Chinese Society for Electrical Engineering,Ruan Qiantu,Chair of the Board and Party Secretary of State Grid Fujian Electric Power Co.,Ltd.,Shan Shewu,Chair of the Board and Party Secretary of NARI Group,as well as Fan Xiangqian and Yu Qing,Director and Deputy Director of Management Committee of Nanjing Chilin Technology Innovation Park.
文摘The effective identification and protection of ecological spaces is a fundamental cornerstone for achieving sustainable development and promoting a green society.It plays an indispensable role in ecological protection,resource management,and environmental governance,and is of great significance for the sustainable development of human society.Rapid and scientific identification of ecological spaces provides a scientific foundation for regional ecological protection planning.In this study,we used survey data from the planning and design of forest resources alongside 2017 Landsat 8 OLI remote sensing image to comprehensively analyze forest ecological service functions and ecological sensitivity using the layer-cake model to identify ecological spaces in Nanjing City.The results show that the area of extremely important forest ecological service function zones in Nanjing was 288.57 km^(2),accounting for 3.47%of the total area of Nanjing.The area of highly sensitive zones in Nanjing was 464.39 km^(2),accounting for 7.05%.Considering both forest ecological service functions and sensitivity,the area of core ecological spaces in Nanjing was 692.86 km^(2),accounting for 10.52%of the total area,and the main land use types were woodland and waters.The area of transitional ecological space in Nanjing was the largest,reaching 3150.29 km^(2),accounting for 47.83%of Nanjing s total area.This study provides valuable insights for optimizing the layout of ecological spaces and serves as a reference for related research efforts.
文摘Based on the thorough investigation of the components of urban forest in Nanjing and the collection of samples,it is concluded that there are 1 500 species(including subspecies) of vascular plants belonging to 572 genera of 172 families,among which there are 63 species of ferns belonging to 36 genera of 25 families,1 437 species of seed plants belonging to 536 genera of 147 families.The characteristics are that the flora is rich in species,complex in geographic composition,and possess the distinct transferring quality from tropical to temperate zone.Besides,it is characterized with certain ancient nature,and the peculiar elements are comparatively simple.
文摘The background and connotations of smart growth theories of America were introduced first,spatial expansion features of Nanjing City were summarized as the following 3 points:population growth,expansion of urban spaces and industrial expansion.And then problems emerged in the spatial expansion were pointed out as:A."Sprawl" in the urban development;B.Improper internal spatial structure of the city;C.Destructed historical and cultural context of the city.Smart growth theories were applied in this study to analyze potential problems in the spatial expansion of Nanjing,corresponding countermeasures were given as:defining proper growth boundaries,restricting total growth volume,saving land;strictly controlling growth intensity,fully utilizing resources,intensively using land;scientifically evaluating growth benefits,promoting recycling of resources,and realizing sustainable growth.By learning from overseas smart growth theories,the authors hoped to provide useful references for the overall land use planning and urban planning of Nanjing City.
基金Supported by Earmarked Fund for China Agriculture Research System(CARS-01-47)Super Late-maturing Rice Variety Breeding and Demonstration Program of Ministry of Agriculture~~
文摘[Objective] This study was performed to determine the effects of sowing dates and sites on grain quality and Rapid Viscosity Analyzer （RVA） profile of Nan-jing 46. [Method] The field experiments were carried out at five sites in Jiangsu Province, and in every site, the seeds were sowing on seven different dates. RVA related indices were measured after harvest. [Result] Along with the delay of sowing date, the mil ing quality of Nanjing 46 increased at first and then reduced, while its appearance quality went up and the cooling and edible quality decreased. With the sowing sites moving southward, the rice mil ing quality, appearance quality, and cooling and edible quality of Nanjing 46 decreased at first and then increased. Grain traits responded variably to the sowing dates and sites. The brown rice rate, grain width, grain length, length/width, mil ed rice rate and head mil ed rice rate were less affected, while the chalky rice rate and chalkiness degree were more af-fected. The gelatinization temperature, protein content, amylose content, gel consis-tency and eating value were in-between. The RVA profile analysis revealed that the breakdown value, setback value and pasting temperature were affected by the sow-ing date and geographical environment. The peak viscosity, hot viscosity, cool vis-cosity and peak time were influenced more by geographical environment. With the delay of the sowing date, peak viscosity, hot viscosity, cool viscosity, setback value and pasting temperature decreased at first and then increased, while the breakdown value changed inversely, and the peak time did not exhibit a regular trend. With the decrease of latitude, the peak viscosity, hot viscosity, breakdown and cool viscosity declined at first and then increased, the setback value and peak time decreased, while the pasting temperature increased. [Conclusion] This study wil provide refer-ences for the effective production of Nanjing 46.
文摘According to data in Nanjing Statistical Yearbook, contribution made by agricultural production factors was analyzed with contribution models of agricultural factors and the results showed that with restriction of labor force and land, Nanjing suburban counties have entered into a stage of ＂high input-high output＂, considering no matter from agricultural total value of output or from agricultural added value. In future, structure configuration of agricultural input factors should be optimized in Nanjing suburban counties by technology input to improve agricultural technology and technical efficiency in order to further achieve sustainable development of agriculture.
文摘The quantitative analysis method was used to measure the tourism image of Nanjing waterfront to make clear its composition.An evaluation method was also adopted in terms of cognitive image,affective image and the whole image,which may offer some references for the evaluation of other tourism images in urban waterfront of the same kind.
文摘10 temple courtyards and 10 temple gardens were chosen as the research object in Nanjing.There were 146 species of vascular plants(including variety),which belong to 96 genera and 63 families.The Richness index,Simpson index,Species diversity and Similarity index of the plant community were analyzed.The results showed:①The dominant species of temple courtyards and temple gardens were all trees;the density of shrub layer(0.32 strains/m2) was greater than that of the tree layer(0.21 strains/m2).And the density of tree layer(2.4 strains/m2) and shrub layer(4.5 strains/m2) in temple gardens were totally higher than those of temple courtyards.②Both the Simpson index and the Species diversity in temple garden plots were higher than those of the temple courtyard plots;The Pielou index was at a higher level both in tree layer and shrub layer,which indicated that quantities of each tree species were on an average level.③The Similarity index in temple gardens was higher than that of the temple courtyards,both less than 50%,which indicated that the repetition rate of each tree species was obviously greater in temple gardens than in temple courtyards.
文摘From the perspective of senior citizens,questionnaire survey and field investigation were carried on and analyzed in three parks in Nanjing City.The results showed that outdoor activities are the principal ways for the senior citizens to spend their time,the parks near home is their prior choice,and the radiation range of the park and greenbelt mostly is no more than 2 km;most of the senior citizens come to parks on foot and the parks are always within 30 minutes walking distance;the senior citizens always have fixed partners and groups for their exercise-dominant activities.
文摘To study the relationship between the enlargement of Nanjing City and urban greenhouse effect,the temperature of Nanjing Station and its suburban stations during 1961-2000 was analyzed.The results showed that the temperature of Nanjing area has increased gradually and the urban heat island effect has developed quickly.The average temperature increment in winter is the greatest,followed by that in spring,autumn and summer,most of which was caused by the greenhouse effect in Nanjing area.Finally several effective countermeasures have been proposed correspondingly.
文摘Urban park is an important outdoor leisure space for urban citizens. The public facility in urban park is a functional environmental element connecting human beings and environment. Through analyzing the present situation and application of public facilities in urban parks of Nanjing City, the existing problems and countermeasures were pointed out, in order to provide theoretical references for the construction of public facility in the urban parks.
