Green development is an important issue of sustainable development in China.Due to the relatively backward economy and the fragile ecological environment,restricted development zones need to embrace green development....Green development is an important issue of sustainable development in China.Due to the relatively backward economy and the fragile ecological environment,restricted development zones need to embrace green development.Taking 38 counties in Jilin Province as the empirical research objects,and based on cross-sectional data for each county in 2005,2010,and 2015,we accurately depicted the spatiotemporal evolutionary characteristics of green development efficiency(GDE)in restricted development zones of Jilin Province using the slacks-based measure-data envelope analysis(SBM-DEA)model.Moreover,the factors that influence GDE were further analyzed using the Tobit model.We found that:first,GDE showed a V-shaped trend in restricted development zones of Jilin Province.The differences in GDE in the eastern,central,and western Jilin Province increased gradually.Second,76%of counties in the restricted development zones had high or higher efficiencies.The resource-based cities were the main areas with low or lower GDE.Third,the economic development level was the core factor affecting GDE.Urbanization level had a significant negative effect on GDE in the restricted development zones.The effect of technological innovation level on GDE fluctuated,and we found that a‘backward mechanism’of technological innovation was beginning to form.Industrial structure and environmental governance had no significant effects on GDE.展开更多
Analyzing spatiotemporal dynamics of land use and land cover over time is widely recognized as important to better understand and provide solutions for social, economic, and environmental problems, especially in ecolo...Analyzing spatiotemporal dynamics of land use and land cover over time is widely recognized as important to better understand and provide solutions for social, economic, and environmental problems, especially in ecologically fragile region. In this paper, a case study was taken in Zhenlai County, which is a part of farming-pastoral ecotone of Northeast China. This study seeks to use multi-temporal satellite images and other data from various sources to analyze spatiotemporal changes from 1932 to 2005, and applied a quantitative methodology named intensity analysis in the time scale of decades at three levels: time interval, category, and transition. The findings of the case study are as follows: 1) the interval level of intensity analysis revealed that the annual rate of overall change was relatively fast in 1932–1954 and 1954–1976 time intervals. 2) The category level showed that arable land experienced less intensively gains and losses if the overall change was to have been distributed uniformly across the landscape while the gains and losses of forest land, grassland, water, settlement, wetland and other unused land were not consistent and stationary across the four time intervals. 3) The transition level illustrated that arable land expanded at the expense of grassland before 2000 while it gained intensively from wetland from 2000 to 2005. Settlement targets arable land and avoids grassland, water, wetland and other unused land. Besides, the loss of grassland was intensively targeted by arable land, forest land and wetland in the study period while the loss of wetland was targeted by water except for the time interval of 1976–2000. 4) During the early reclamation period, land use change of the study area was mainly affected by the policy, institutional and political factors, followed by the natural disasters.展开更多
China is currently undergoing the most inf luential urbanization phase in its history, and this process will probably last for a few decades to come. Along with the accelerated urbanization, the quality of development...China is currently undergoing the most inf luential urbanization phase in its history, and this process will probably last for a few decades to come. Along with the accelerated urbanization, the quality of development has been elevated to an equal position with the quantity. Being one of the most developed and best urbanized provinces in China, Jiangsu has achieved an urbanization rate of 57%. Dealing with large construction scales, Jiangsu is presently striving to improve the quality of its urban space, and to elevate human settlements to a higher level. By contextualizing Jiangsu's urbanization within a certain development stage and a specif ic historical era, the paper proposes the overall idea and action strategies for improving the quality of urban space, on the basis of the analysis on contemporary cultural pursuits. It aims at changing the current situation of "one outlook for thousands of cities," improving the quality of urban space and the competitiveness of urban culture, and eventually creating better human settlements and a harmonious society.展开更多
According to the current context of China's new urbanization and urban and rural transformation,this paper defines incremental planning,stock-based planning,and reduction planning.It further discusses the socio-ec...According to the current context of China's new urbanization and urban and rural transformation,this paper defines incremental planning,stock-based planning,and reduction planning.It further discusses the socio-economic foundation of incremental planning,the transformation of incremental planning to stock-based planning,and the emergence of reduction planning,as well as the characteristics of these three types of urban planning.Based on that,it finds that incremental planning is determined by China's unique urban growth pattern,and that the change of the urban growth mode leads to a transformation of urban planning.In addition,reduction planning can effectively cope with urban decline.After over 30 years of rapid economic development,more and more cities in China are approaching the bottleneck of growth.Therefore,the transformation of urban planning is unavoidable and will definitely become an important topic in planning circles.展开更多
The 18th CPC National Congress set forth a development goal to build a beautiful China. Particularly,it emphasized the integration of urban and rural development as a fundamental way to solve issues relating to agricu...The 18th CPC National Congress set forth a development goal to build a beautiful China. Particularly,it emphasized the integration of urban and rural development as a fundamental way to solve issues relating to agriculture,rural areas,and farmers. Consequently,how to integrate urban and rural development,and how to construct beautiful villages under national arrangements turns into distinctive historical responsibilities of the contemporary urban and rural planners. Nevertheless,due to the profound impact of the urban-rural dual system,there has been a huge disparity between rural and urban in both construction management and planning. Simply put,we know less about the rural but more about the urban. Taking the beautiful village construction in Jiangsu Province as an example,the paper draws from the empirical practices on village planning,farmers' wishes survey,and environmental remediation,in the hope to contest current village planning and construction concepts and to initiate more heated debates on rural areas at large. It seeks a new route for village construction and rural human settlement improvement that better respects the characteristics of China's rural areas,and meanwhile more faithfully refl ects farmers' demands.展开更多
基金Under the auspices of National Natural Science Foundation of China(No.41771138,41801105)。
文摘Green development is an important issue of sustainable development in China.Due to the relatively backward economy and the fragile ecological environment,restricted development zones need to embrace green development.Taking 38 counties in Jilin Province as the empirical research objects,and based on cross-sectional data for each county in 2005,2010,and 2015,we accurately depicted the spatiotemporal evolutionary characteristics of green development efficiency(GDE)in restricted development zones of Jilin Province using the slacks-based measure-data envelope analysis(SBM-DEA)model.Moreover,the factors that influence GDE were further analyzed using the Tobit model.We found that:first,GDE showed a V-shaped trend in restricted development zones of Jilin Province.The differences in GDE in the eastern,central,and western Jilin Province increased gradually.Second,76%of counties in the restricted development zones had high or higher efficiencies.The resource-based cities were the main areas with low or lower GDE.Third,the economic development level was the core factor affecting GDE.Urbanization level had a significant negative effect on GDE in the restricted development zones.The effect of technological innovation level on GDE fluctuated,and we found that a‘backward mechanism’of technological innovation was beginning to form.Industrial structure and environmental governance had no significant effects on GDE.
基金Under the auspices of National Youth Science Foundation of China(No.41601173)China Postdoctoral Science Foundation(No.2016M600954)
文摘Analyzing spatiotemporal dynamics of land use and land cover over time is widely recognized as important to better understand and provide solutions for social, economic, and environmental problems, especially in ecologically fragile region. In this paper, a case study was taken in Zhenlai County, which is a part of farming-pastoral ecotone of Northeast China. This study seeks to use multi-temporal satellite images and other data from various sources to analyze spatiotemporal changes from 1932 to 2005, and applied a quantitative methodology named intensity analysis in the time scale of decades at three levels: time interval, category, and transition. The findings of the case study are as follows: 1) the interval level of intensity analysis revealed that the annual rate of overall change was relatively fast in 1932–1954 and 1954–1976 time intervals. 2) The category level showed that arable land experienced less intensively gains and losses if the overall change was to have been distributed uniformly across the landscape while the gains and losses of forest land, grassland, water, settlement, wetland and other unused land were not consistent and stationary across the four time intervals. 3) The transition level illustrated that arable land expanded at the expense of grassland before 2000 while it gained intensively from wetland from 2000 to 2005. Settlement targets arable land and avoids grassland, water, wetland and other unused land. Besides, the loss of grassland was intensively targeted by arable land, forest land and wetland in the study period while the loss of wetland was targeted by water except for the time interval of 1976–2000. 4) During the early reclamation period, land use change of the study area was mainly affected by the policy, institutional and political factors, followed by the natural disasters.
文摘China is currently undergoing the most inf luential urbanization phase in its history, and this process will probably last for a few decades to come. Along with the accelerated urbanization, the quality of development has been elevated to an equal position with the quantity. Being one of the most developed and best urbanized provinces in China, Jiangsu has achieved an urbanization rate of 57%. Dealing with large construction scales, Jiangsu is presently striving to improve the quality of its urban space, and to elevate human settlements to a higher level. By contextualizing Jiangsu's urbanization within a certain development stage and a specif ic historical era, the paper proposes the overall idea and action strategies for improving the quality of urban space, on the basis of the analysis on contemporary cultural pursuits. It aims at changing the current situation of "one outlook for thousands of cities," improving the quality of urban space and the competitiveness of urban culture, and eventually creating better human settlements and a harmonious society.
文摘According to the current context of China's new urbanization and urban and rural transformation,this paper defines incremental planning,stock-based planning,and reduction planning.It further discusses the socio-economic foundation of incremental planning,the transformation of incremental planning to stock-based planning,and the emergence of reduction planning,as well as the characteristics of these three types of urban planning.Based on that,it finds that incremental planning is determined by China's unique urban growth pattern,and that the change of the urban growth mode leads to a transformation of urban planning.In addition,reduction planning can effectively cope with urban decline.After over 30 years of rapid economic development,more and more cities in China are approaching the bottleneck of growth.Therefore,the transformation of urban planning is unavoidable and will definitely become an important topic in planning circles.
文摘The 18th CPC National Congress set forth a development goal to build a beautiful China. Particularly,it emphasized the integration of urban and rural development as a fundamental way to solve issues relating to agriculture,rural areas,and farmers. Consequently,how to integrate urban and rural development,and how to construct beautiful villages under national arrangements turns into distinctive historical responsibilities of the contemporary urban and rural planners. Nevertheless,due to the profound impact of the urban-rural dual system,there has been a huge disparity between rural and urban in both construction management and planning. Simply put,we know less about the rural but more about the urban. Taking the beautiful village construction in Jiangsu Province as an example,the paper draws from the empirical practices on village planning,farmers' wishes survey,and environmental remediation,in the hope to contest current village planning and construction concepts and to initiate more heated debates on rural areas at large. It seeks a new route for village construction and rural human settlement improvement that better respects the characteristics of China's rural areas,and meanwhile more faithfully refl ects farmers' demands.
