Comparing the city-size distribution at the urban agglomeration（UA） scale is important for understanding the processes of urban development. However, comparative studies of city-size distribution among China＇s thre...Comparing the city-size distribution at the urban agglomeration（UA） scale is important for understanding the processes of urban development. However, comparative studies of city-size distribution among China＇s three largest UAs, the Beijing-Tianjin-Hebei agglomeration（BTHA）, the Yangtze River Delta agglomeration（YRDA）, and the Pearl River Delta agglomeration（PRDA）, remain inadequate due to the limitation of data availability. Therefore, using urban data derived from time-series nighttime light data, the common characteristics and distinctive features of city-size distribution among the three UAs from 1992 to 2015 were compared by the Pareto regression and the rank clock method. We identified two common features. First, the city-size distribution became more even. The Pareto exponents increased by 0.17, 0.12, and 0.01 in the YRDA, BTHA, and PRDA, respectively. Second, the average ranks of small cities ascended, being 0.55, 0.08 and 0.04 in the three UAs, respectively. However, the average ranks of large and medium cities in the three UAs experienced different trajectories, which are closely related to the similarities and differences in the driving forces for the development of UAs. Place-based measures are encouraged to promote a coordinated development among cities of differing sizes in the three UAs.展开更多
Aiming at providing references to China's urban development in the reform era, this paper gives a brief summary of the recent academic advances about the contemporary urban development in Asia. Mainly based on rev...Aiming at providing references to China's urban development in the reform era, this paper gives a brief summary of the recent academic advances about the contemporary urban development in Asia. Mainly based on reviewing the literature concerning Asian specificity, the author attempts at addressing the current critical orientations of international urban studies. The basic issues covered are the 1) changing conception of major forces for urbanization; 2) the. new concerns upon alternative urbanization approaches, ac 3) the more attention to the necessary reform of urban governance for a sustainable urban development展开更多
Ekphrasis refers the vividly use of language to describe the visual details in literature.David Mitchell’s Cloud Atlas has abundant literary ekphrasis of spaces.David Mitchell combines visual descriptions of environm...Ekphrasis refers the vividly use of language to describe the visual details in literature.David Mitchell’s Cloud Atlas has abundant literary ekphrasis of spaces.David Mitchell combines visual descriptions of environments with characters’emotions to convey themes.Utilizing the lens of visual culture and through the eyes of various protagonists,this essay examines two kinds of active gazers,namely“flâneurs”and“flâneuses”,as well as the“imperial gazers”in flowing spaces and colonial spaces respectively.This essay adopts the methods of urban studies and colonial criticism to explore Mitchell’s portrayal visual spaces in Cloud Atlas.展开更多
Recent rapid industrialization and urbanization in the Pearl River Delta (PRD) is character-ized by broad geographical dispersion, diversities of scales and technological levels, and the proliferation of small-scale t...Recent rapid industrialization and urbanization in the Pearl River Delta (PRD) is character-ized by broad geographical dispersion, diversities of scales and technological levels, and the proliferation of small-scale township and individual enterprises. Such a pattern of fast development has brought widespread environmental perturbation that is becoming difficult to contain or control. This study surveys the present environmental status in urban areas of PRD, assesses the trends of environmental quality, and evaluates the ecological impacts of development in the region.展开更多
Ⅰ.Introduction1) The People’s Park Square isShanghai’s best known land-mark and is the traditionalcenter of its cultural andrecreational facilities as wellas an extension of Shanghai’sprime commercial area.Thearea...Ⅰ.Introduction1) The People’s Park Square isShanghai’s best known land-mark and is the traditionalcenter of its cultural andrecreational facilities as wellas an extension of Shanghai’sprime commercial area.Thearea contains of Shanghai’sprime commercial area.Thearea contains a number ofbuildings of significant archi-tectural and heritage merit.展开更多
Synthetic aperture radar(SAR)records important information about the interaction of electromagnetic waves with the Earth’s surface.However,long-term and high-resolution backscatter coefficient data are still lacking ...Synthetic aperture radar(SAR)records important information about the interaction of electromagnetic waves with the Earth’s surface.However,long-term and high-resolution backscatter coefficient data are still lacking in many urban studies(e.g.,building height estimation).Here,we proposed a framework to reconstruct the 1-km backscatter coefficient in 1990-2022 utilizing the Sentinel-1 Ground Range Detected data and Landsat time series data in the Jing-Jin-Ji(JJJ)region.First,we developed a regression model to convert the optical signals from Landsat into backscatter coefficients as the Sentinel-1 data,using observations from 2015 to 2022.Then,we reconstructed backscatter coefficients from 1990 to 2022 using the long-term Landsat data.Using the reconstructed backscatter coefficients,we analyzed the dynamic patterns of building height over the past decades.The proposed approach performs well on estimating the backscatter coefficient and its spatial pattern,with the annual mean absolute error,root mean square error,and R^(2) of 1.10 dB,1.50 dB,and 0.64,respectively.The temporal trends revealed from the reconstructed backscatter data are reliable compared with satellite observations at a relatively coarse resolution,with Pearson’s coefficients above 0.92 in 6 sample cities.The derived building height from the reconstructed SAR data indicates that the JJJ region experienced a noticeable upward expansion in 1990-2022,e.g.,Beijing has the fastest growth rate of 0.420 km^(3)/decade regarding the total building volumes.The proposed framework of reconstructing SAR data from optical satellite images provides a new insight to complement the long-term and high-resolution backscatter from local to global scales.展开更多
This paper is a comprehensive study on the progress in research on Chinese urbanization. On the basis of the concept and connotation of Chinese urbanization defined by Chinese scholars, the paper systematically collec...This paper is a comprehensive study on the progress in research on Chinese urbanization. On the basis of the concept and connotation of Chinese urbanization defined by Chinese scholars, the paper systematically collects the research results on the issues concerning urbanization in China from the different approaches of demography, geography, city planning, economics and history, reviewin~ the process of research on Chinese urbanization made both domestically and internationally. In this paper, the domestic studies fail into five periods as follows： the initial period of research on urbanization in China （1978-1983）; the period with both domesticaUy constructed and borrowed theories on urbanization （1984-1988）; the period of research on leading urbanization factors and [oca｜ization （1989-1997）; the period with the research greatty promoted by the government （1998-2004）; and the period featuring flourishing studies on the science of urbanization in China （2005 ti[[ today）. In contrast, the overseas research on Chinese urbanization can be divided into three periods： the period studying the history of urbanization in China （before the 1970s）; the systematic research on Chinese urbanization （1970-1999）; and the comprehensive research on Chinese urbanization （2000 tiU today）. The paper focuses on the key results of research on Chinese urbanization, including nine issues as foLLows： the guidelines and road for urban development in China, the features of Chinese urbanization, the mechanism driving the growth of Chinese urbanization, the process of Chinese urbanization, the spatiat patterns of Chinese urbanization, the urbanization in rural areas in China, the comparison of urbanization in China and other countries, and gLobaLization and regional urbanization.展开更多
Studies on the Transition of Urban China Author:Chenghua LI Year:2013Publisher:People’s Publishing House ISBN:9787010129716(417 pages,in Chinese)The innovative urbanization practice and the urban transitional develop...Studies on the Transition of Urban China Author:Chenghua LI Year:2013Publisher:People’s Publishing House ISBN:9787010129716(417 pages,in Chinese)The innovative urbanization practice and the urban transitional development strategies in China have become new heated topics in the field of worldwide urban research,and posed new requirements on展开更多
Every city has built environments that are largely regarded as eyesores,for aesthetic,social,or moral reasons.Urban nightlife streets are examples of such‘grimy heritage’.Not only shabby and disorderly,they harbour ...Every city has built environments that are largely regarded as eyesores,for aesthetic,social,or moral reasons.Urban nightlife streets are examples of such‘grimy heritage’.Not only shabby and disorderly,they harbour forms of commercial sex,drinking cultures,and ephemeral nightlife cultures that many city residents and government officials consider undesirable.Sometimes their built forms are regarded as the enemy of genuine heritage architecture,since they obscure more solid,carefully designed structures around them.However,in many cities,organic nightlife streets—developing in such spaces precisely because they were derelict or poorly regulated—serve important social functions as spaces of creativity and community formation.This paper examines the ways that such‘grimy heritage’has developed in Shanghai and Tokyo,using examples from ethnographic research and historical sources,and addressing the question of the contribution of the‘grimy heritage’to authentic,urban social life.展开更多
基金National Natural Science Foundation of China,No.41621061,No.41501092 Talents Training Program from the Beijing Municipal Commission of Education No.201500002012G058
文摘Comparing the city-size distribution at the urban agglomeration（UA） scale is important for understanding the processes of urban development. However, comparative studies of city-size distribution among China＇s three largest UAs, the Beijing-Tianjin-Hebei agglomeration（BTHA）, the Yangtze River Delta agglomeration（YRDA）, and the Pearl River Delta agglomeration（PRDA）, remain inadequate due to the limitation of data availability. Therefore, using urban data derived from time-series nighttime light data, the common characteristics and distinctive features of city-size distribution among the three UAs from 1992 to 2015 were compared by the Pareto regression and the rank clock method. We identified two common features. First, the city-size distribution became more even. The Pareto exponents increased by 0.17, 0.12, and 0.01 in the YRDA, BTHA, and PRDA, respectively. Second, the average ranks of small cities ascended, being 0.55, 0.08 and 0.04 in the three UAs, respectively. However, the average ranks of large and medium cities in the three UAs experienced different trajectories, which are closely related to the similarities and differences in the driving forces for the development of UAs. Place-based measures are encouraged to promote a coordinated development among cities of differing sizes in the three UAs.
文摘Aiming at providing references to China's urban development in the reform era, this paper gives a brief summary of the recent academic advances about the contemporary urban development in Asia. Mainly based on reviewing the literature concerning Asian specificity, the author attempts at addressing the current critical orientations of international urban studies. The basic issues covered are the 1) changing conception of major forces for urbanization; 2) the. new concerns upon alternative urbanization approaches, ac 3) the more attention to the necessary reform of urban governance for a sustainable urban development
基金this paper is funded by The 13th Postgraduate Education Innovation Fund of Wuhan Institute of Technology(WIT),Research on Ekphrasis of To the Light House(Project Number:CX2021396).
文摘Ekphrasis refers the vividly use of language to describe the visual details in literature.David Mitchell’s Cloud Atlas has abundant literary ekphrasis of spaces.David Mitchell combines visual descriptions of environments with characters’emotions to convey themes.Utilizing the lens of visual culture and through the eyes of various protagonists,this essay examines two kinds of active gazers,namely“flâneurs”and“flâneuses”,as well as the“imperial gazers”in flowing spaces and colonial spaces respectively.This essay adopts the methods of urban studies and colonial criticism to explore Mitchell’s portrayal visual spaces in Cloud Atlas.
文摘Recent rapid industrialization and urbanization in the Pearl River Delta (PRD) is character-ized by broad geographical dispersion, diversities of scales and technological levels, and the proliferation of small-scale township and individual enterprises. Such a pattern of fast development has brought widespread environmental perturbation that is becoming difficult to contain or control. This study surveys the present environmental status in urban areas of PRD, assesses the trends of environmental quality, and evaluates the ecological impacts of development in the region.
文摘Ⅰ.Introduction1) The People’s Park Square isShanghai’s best known land-mark and is the traditionalcenter of its cultural andrecreational facilities as wellas an extension of Shanghai’sprime commercial area.Thearea contains of Shanghai’sprime commercial area.Thearea contains a number ofbuildings of significant archi-tectural and heritage merit.
基金supported by the National Natural Science Foundation of China(42101418 and 42371413)the National Natural Science Foundation of China/RGC Joint Research Scheme(42361164614 and N_HKU722/23)+1 种基金the NSFC Excellent Young Scientists Fund(Overseas)the Chinese University Scientific Fund.
文摘Synthetic aperture radar(SAR)records important information about the interaction of electromagnetic waves with the Earth’s surface.However,long-term and high-resolution backscatter coefficient data are still lacking in many urban studies(e.g.,building height estimation).Here,we proposed a framework to reconstruct the 1-km backscatter coefficient in 1990-2022 utilizing the Sentinel-1 Ground Range Detected data and Landsat time series data in the Jing-Jin-Ji(JJJ)region.First,we developed a regression model to convert the optical signals from Landsat into backscatter coefficients as the Sentinel-1 data,using observations from 2015 to 2022.Then,we reconstructed backscatter coefficients from 1990 to 2022 using the long-term Landsat data.Using the reconstructed backscatter coefficients,we analyzed the dynamic patterns of building height over the past decades.The proposed approach performs well on estimating the backscatter coefficient and its spatial pattern,with the annual mean absolute error,root mean square error,and R^(2) of 1.10 dB,1.50 dB,and 0.64,respectively.The temporal trends revealed from the reconstructed backscatter data are reliable compared with satellite observations at a relatively coarse resolution,with Pearson’s coefficients above 0.92 in 6 sample cities.The derived building height from the reconstructed SAR data indicates that the JJJ region experienced a noticeable upward expansion in 1990-2022,e.g.,Beijing has the fastest growth rate of 0.420 km^(3)/decade regarding the total building volumes.The proposed framework of reconstructing SAR data from optical satellite images provides a new insight to complement the long-term and high-resolution backscatter from local to global scales.
文摘This paper is a comprehensive study on the progress in research on Chinese urbanization. On the basis of the concept and connotation of Chinese urbanization defined by Chinese scholars, the paper systematically collects the research results on the issues concerning urbanization in China from the different approaches of demography, geography, city planning, economics and history, reviewin~ the process of research on Chinese urbanization made both domestically and internationally. In this paper, the domestic studies fail into five periods as follows： the initial period of research on urbanization in China （1978-1983）; the period with both domesticaUy constructed and borrowed theories on urbanization （1984-1988）; the period of research on leading urbanization factors and [oca｜ization （1989-1997）; the period with the research greatty promoted by the government （1998-2004）; and the period featuring flourishing studies on the science of urbanization in China （2005 ti[[ today）. In contrast, the overseas research on Chinese urbanization can be divided into three periods： the period studying the history of urbanization in China （before the 1970s）; the systematic research on Chinese urbanization （1970-1999）; and the comprehensive research on Chinese urbanization （2000 tiU today）. The paper focuses on the key results of research on Chinese urbanization, including nine issues as foLLows： the guidelines and road for urban development in China, the features of Chinese urbanization, the mechanism driving the growth of Chinese urbanization, the process of Chinese urbanization, the spatiat patterns of Chinese urbanization, the urbanization in rural areas in China, the comparison of urbanization in China and other countries, and gLobaLization and regional urbanization.
文摘Studies on the Transition of Urban China Author:Chenghua LI Year:2013Publisher:People’s Publishing House ISBN:9787010129716(417 pages,in Chinese)The innovative urbanization practice and the urban transitional development strategies in China have become new heated topics in the field of worldwide urban research,and posed new requirements on
文摘Every city has built environments that are largely regarded as eyesores,for aesthetic,social,or moral reasons.Urban nightlife streets are examples of such‘grimy heritage’.Not only shabby and disorderly,they harbour forms of commercial sex,drinking cultures,and ephemeral nightlife cultures that many city residents and government officials consider undesirable.Sometimes their built forms are regarded as the enemy of genuine heritage architecture,since they obscure more solid,carefully designed structures around them.However,in many cities,organic nightlife streets—developing in such spaces precisely because they were derelict or poorly regulated—serve important social functions as spaces of creativity and community formation.This paper examines the ways that such‘grimy heritage’has developed in Shanghai and Tokyo,using examples from ethnographic research and historical sources,and addressing the question of the contribution of the‘grimy heritage’to authentic,urban social life.
