Mega-urban agglomerations are strategic core areas for national economic development and the main regions of new urbanization. They also have important roles in shifting the global economic center of gravity to China....Mega-urban agglomerations are strategic core areas for national economic development and the main regions of new urbanization. They also have important roles in shifting the global economic center of gravity to China. However, the development of mega-urban agglomerations has triggered the interactive coercion between resources and the eco-envi- ronment. The interactive coupled effects between urbanization and the eco-environment in mega-urban agglomerations represent frontier and high-priority research topics in the field of Earth system science over the next decade. In this paper, we carried out systematic theo- retical analysis of the interactive coupling mechanisms and coercing effects between ur- banization and the eco-environment in mega-urban agglomerations. In detail, we analyzed the nonlinear-coupled relationships and the coupling characteristics between natural and human elements in mega-urban agglomerations. We also investigated the interactive coercion intensities between internal and external elements, and the mechanisms and patterns of local couplings and telecouplings in mega-urban agglomeration systems, which are affected by key internal and external control elements. In addition, we proposed the interactive coupling theory on urbanization and the eco-environment in mega-urban agglomerations. Furthermore we established a spatiotemporal dynamic coupling model with multi-element, multi-scale, multi-scenario, multi-module and multi-agent integrations, which can be used to develop an intelligent decision support system for sustainable development of mega-urban agglomera- tions. In general, our research may provide theoretical guidance and method support to solve problems related to mega-urban agglomerations and maintain their sustainable development.展开更多
There is an abundance of conceptual frameworks relevant to sustainability in urban systems.However,to advance urban ecological science and its application to sustainable urban transformations,key existing frameworks m...There is an abundance of conceptual frameworks relevant to sustainability in urban systems.However,to advance urban ecological science and its application to sustainable urban transformations,key existing frameworks must be synthesized.This paper is a conceptual synthesis cast in essay form in order to encompass a broad range of relevant ideas.It starts from the premise that the familiar models of metropolitan and megalopolitan urban structure,of industrially driven urban development,and of the contrasts between urban and non-urban lands are manifestly inadequate representations of evolving global reality.Such inadequacy is illustrated with examples from the United States and from China.Both the form and the interactions involved in contemporary urbanization and urban change suggest the need for a new integrated framework synthesizing two existing yet still evolving concepts:(1)The urban megaregion framework accommodates the spatial extent,interdigitation of contrasting land uses,and the linked spatial relations between nominally urban and nominally rural areas.(2)The new concept of the continuum of urbanity emphasizes the shifts in livelihood and lifestyle driven by regional and global teleconnections and their joint effects on local environments and landscapes.Together these frameworks suggest a common conceptual structure for addressing urban areas of different ages,sizes,forms,and dynamics in both urbanizing and urbanized areas in developing and developed countries and regions.The synthesis of frameworks points to empirical research needs,and has the potential to better match sustainability plans and actions with the diverse urban forms and dynamics now appearing around the world.展开更多
This study investigates the sustainability implications of the theoretical models of industrialization and urbanization pioneered by Dixit and Stiglitz^(1) so to open the theoretical “black box” of the unsustainabil...This study investigates the sustainability implications of the theoretical models of industrialization and urbanization pioneered by Dixit and Stiglitz^(1) so to open the theoretical “black box” of the unsustainability of the traditional industrialization mode, and shows how to reshape the relationship between the environment and development under the paradigm of ecological civilization. It finds that the theoretical models that “perfectly” simulate the traditional industrialization mode all have the implicit consequence of environmental unsustainability. Nonetheless, this limitation is not due to the problems of the models themselves but is more a result of the limitations of the traditional developmental and neoclassical economics paradigms of the industrial era. Therefore, the consequences of unsustainability cannot simply be avoided through external policies such as technological progress and environmental regulations, nor can they be prevented by simply adjusting some parameters in these theoretical models. Instead, a shift is required in both the developmental and the economics paradigms formed in the traditional industrial era. From an ecological civilization perspective, this study rethinks the basic issues of economics along the two lines of the ends(what) and the means(how) of development;briefly reviews the history of economic thought;and uses a conceptual framework to reorganize the relevant intellectual profundities that are neglected in standard neoclassical economics. The study further formalizes the conceptual framework in a general form model and shows how a paradigm shift in development could shift the trade-offs from the multiple goals of the economy, the environment, and well-being in the traditional industrial era to mutual reinforcement in ecocivilization.展开更多
基金The Major Program of National Natural Science Foundation of China, No.41590840, No.41590842
文摘Mega-urban agglomerations are strategic core areas for national economic development and the main regions of new urbanization. They also have important roles in shifting the global economic center of gravity to China. However, the development of mega-urban agglomerations has triggered the interactive coercion between resources and the eco-envi- ronment. The interactive coupled effects between urbanization and the eco-environment in mega-urban agglomerations represent frontier and high-priority research topics in the field of Earth system science over the next decade. In this paper, we carried out systematic theo- retical analysis of the interactive coupling mechanisms and coercing effects between ur- banization and the eco-environment in mega-urban agglomerations. In detail, we analyzed the nonlinear-coupled relationships and the coupling characteristics between natural and human elements in mega-urban agglomerations. We also investigated the interactive coercion intensities between internal and external elements, and the mechanisms and patterns of local couplings and telecouplings in mega-urban agglomeration systems, which are affected by key internal and external control elements. In addition, we proposed the interactive coupling theory on urbanization and the eco-environment in mega-urban agglomerations. Furthermore we established a spatiotemporal dynamic coupling model with multi-element, multi-scale, multi-scenario, multi-module and multi-agent integrations, which can be used to develop an intelligent decision support system for sustainable development of mega-urban agglomera- tions. In general, our research may provide theoretical guidance and method support to solve problems related to mega-urban agglomerations and maintain their sustainable development.
基金We acknowledge contributions from research and synthesis supported by the U.S.National Science Foundation through the Baltimore Ecosystem Study,Long-Term Ecological Research project(DEB 1027188)the Urban Sustainability Research Coordination Network(RCN 1140070).
文摘There is an abundance of conceptual frameworks relevant to sustainability in urban systems.However,to advance urban ecological science and its application to sustainable urban transformations,key existing frameworks must be synthesized.This paper is a conceptual synthesis cast in essay form in order to encompass a broad range of relevant ideas.It starts from the premise that the familiar models of metropolitan and megalopolitan urban structure,of industrially driven urban development,and of the contrasts between urban and non-urban lands are manifestly inadequate representations of evolving global reality.Such inadequacy is illustrated with examples from the United States and from China.Both the form and the interactions involved in contemporary urbanization and urban change suggest the need for a new integrated framework synthesizing two existing yet still evolving concepts:(1)The urban megaregion framework accommodates the spatial extent,interdigitation of contrasting land uses,and the linked spatial relations between nominally urban and nominally rural areas.(2)The new concept of the continuum of urbanity emphasizes the shifts in livelihood and lifestyle driven by regional and global teleconnections and their joint effects on local environments and landscapes.Together these frameworks suggest a common conceptual structure for addressing urban areas of different ages,sizes,forms,and dynamics in both urbanizing and urbanized areas in developing and developed countries and regions.The synthesis of frameworks points to empirical research needs,and has the potential to better match sustainability plans and actions with the diverse urban forms and dynamics now appearing around the world.
基金This study is sponsored by the RIEco Innovation Project"Economics in the Perspective of Ecocivilization and Its Policy Implications"(2022STSA02)at Chinese Academy of Social Sciences.
文摘This study investigates the sustainability implications of the theoretical models of industrialization and urbanization pioneered by Dixit and Stiglitz^(1) so to open the theoretical “black box” of the unsustainability of the traditional industrialization mode, and shows how to reshape the relationship between the environment and development under the paradigm of ecological civilization. It finds that the theoretical models that “perfectly” simulate the traditional industrialization mode all have the implicit consequence of environmental unsustainability. Nonetheless, this limitation is not due to the problems of the models themselves but is more a result of the limitations of the traditional developmental and neoclassical economics paradigms of the industrial era. Therefore, the consequences of unsustainability cannot simply be avoided through external policies such as technological progress and environmental regulations, nor can they be prevented by simply adjusting some parameters in these theoretical models. Instead, a shift is required in both the developmental and the economics paradigms formed in the traditional industrial era. From an ecological civilization perspective, this study rethinks the basic issues of economics along the two lines of the ends(what) and the means(how) of development;briefly reviews the history of economic thought;and uses a conceptual framework to reorganize the relevant intellectual profundities that are neglected in standard neoclassical economics. The study further formalizes the conceptual framework in a general form model and shows how a paradigm shift in development could shift the trade-offs from the multiple goals of the economy, the environment, and well-being in the traditional industrial era to mutual reinforcement in ecocivilization.