Research on child-friendly cities is an integral part of the Global Childhood Research Movement,emerging under the influence of the new sociology of childhood,feminist theory,and postmodern space theory.It has gone th...Research on child-friendly cities is an integral part of the Global Childhood Research Movement,emerging under the influence of the new sociology of childhood,feminist theory,and postmodern space theory.It has gone through several developmental stages:a period of germination from the 1970s to the 1980s,a period of exploration from the 1990s to the end of the 20th century,and a period of maturation from the 21st century to the present.During this process,the analytical framework has roughly transitioned from a focus on“age-development”to“social construction,”and then to“social structure.”In response to the current neglect of the shift from a child to a childhood perspective,China's child-friendly cities should harness the momentum of the Global Childhood Research Movement.They should pay attention to the spatial issues arising under“inter-generational relations and generational structure,”revitalize the educational and natural attributes of space,and propose urban development strategies focusing on multi-generational childhood and all-age-friendly city programs from a childhood perspective.This approach will help to realize the coordination between people(in their childhood stages)and place(urban space).展开更多
On the basis of a study of the acanthomorphic acritarchs discovered in the Late Proterozoicto Early Cambrian Meishucunian Stage in different regions of China, especially in southernShaanxi and the Yangtze Platform, co...On the basis of a study of the acanthomorphic acritarchs discovered in the Late Proterozoicto Early Cambrian Meishucunian Stage in different regions of China, especially in southernShaanxi and the Yangtze Platform, coupled with a study of the assemblages, morphological cor-relation, microstructure, and evolutional relations of the acanthorphic acritarchs, as well as awide correlation with those found in different regions of the world, the authors discuss the earlyevolutionary stages of the acanthomorphs, features of their assemblages in various stages, theirbiostratigraphical significance, and their evolutionary trend in China.展开更多
The uniqueness and integrity of water ecology in the Yangtze River Basin is of great significance for maintaining global ecological balance.Understanding the historical evolution of water ecology pattern in the Yangtz...The uniqueness and integrity of water ecology in the Yangtze River Basin is of great significance for maintaining global ecological balance.Understanding the historical evolution of water ecology pattern in the Yangtze River Basin over the past century is imperative for improving the comprehensive river basin management and promoting sustainable development.In this paper,the spatio-temporal evolution characteristics of the water ecology pattern in the Yangtze River Basin over the past century are quantitatively analyzed in aspects of lake wetlands,material flux and aquatic biological populations.Then,by a perspective of social-ecological system,the evolution process of the water ecology pattern in the Yangtze River Basin over the past century is divided into four sequential stages based on the change of interactions between social-ecological system components.The driving factors and their mechanism on evolution process of the water ecology pattern in the Yangtze River Basin at different stages are revealed respectively.Based on the integrity of the ecosystem and the system-aticity of the basin,it proposes strategies for the governance and protection of the Yangtze River Basin’s water ecology,in-cluding constructing a“natural-engineering”coupling governance system,strengthening species conservation and habitat restoration,developing green and ecological circular agriculture,and promoting the urban“water operator”mode.These strategies aim to promote harmonious coexistence between humans and nature and provide reference and guidance for high-quality development and high-level protection of major rivers around the world.展开更多
文摘Research on child-friendly cities is an integral part of the Global Childhood Research Movement,emerging under the influence of the new sociology of childhood,feminist theory,and postmodern space theory.It has gone through several developmental stages:a period of germination from the 1970s to the 1980s,a period of exploration from the 1990s to the end of the 20th century,and a period of maturation from the 21st century to the present.During this process,the analytical framework has roughly transitioned from a focus on“age-development”to“social construction,”and then to“social structure.”In response to the current neglect of the shift from a child to a childhood perspective,China's child-friendly cities should harness the momentum of the Global Childhood Research Movement.They should pay attention to the spatial issues arising under“inter-generational relations and generational structure,”revitalize the educational and natural attributes of space,and propose urban development strategies focusing on multi-generational childhood and all-age-friendly city programs from a childhood perspective.This approach will help to realize the coordination between people(in their childhood stages)and place(urban space).
基金Note:This study was supported by the China National Natural Science Foundation Grant No.49172071 and the Foundation for Development of Geological Science and Technology of the Ministry of Geology and Mineral Resources
文摘On the basis of a study of the acanthomorphic acritarchs discovered in the Late Proterozoicto Early Cambrian Meishucunian Stage in different regions of China, especially in southernShaanxi and the Yangtze Platform, coupled with a study of the assemblages, morphological cor-relation, microstructure, and evolutional relations of the acanthorphic acritarchs, as well as awide correlation with those found in different regions of the world, the authors discuss the earlyevolutionary stages of the acanthomorphs, features of their assemblages in various stages, theirbiostratigraphical significance, and their evolutionary trend in China.
文摘The uniqueness and integrity of water ecology in the Yangtze River Basin is of great significance for maintaining global ecological balance.Understanding the historical evolution of water ecology pattern in the Yangtze River Basin over the past century is imperative for improving the comprehensive river basin management and promoting sustainable development.In this paper,the spatio-temporal evolution characteristics of the water ecology pattern in the Yangtze River Basin over the past century are quantitatively analyzed in aspects of lake wetlands,material flux and aquatic biological populations.Then,by a perspective of social-ecological system,the evolution process of the water ecology pattern in the Yangtze River Basin over the past century is divided into four sequential stages based on the change of interactions between social-ecological system components.The driving factors and their mechanism on evolution process of the water ecology pattern in the Yangtze River Basin at different stages are revealed respectively.Based on the integrity of the ecosystem and the system-aticity of the basin,it proposes strategies for the governance and protection of the Yangtze River Basin’s water ecology,in-cluding constructing a“natural-engineering”coupling governance system,strengthening species conservation and habitat restoration,developing green and ecological circular agriculture,and promoting the urban“water operator”mode.These strategies aim to promote harmonious coexistence between humans and nature and provide reference and guidance for high-quality development and high-level protection of major rivers around the world.
