With the rapid development of urban agglomerations in northwest arid and semiarid regions of China, the scope of the urban heat island(UHI) effect has gradually expanded and gradually connected, and has formed a regio...With the rapid development of urban agglomerations in northwest arid and semiarid regions of China, the scope of the urban heat island(UHI) effect has gradually expanded and gradually connected, and has formed a regional heat island(RHI) with a larger range of impact to the regional environment. However, there are few studies on the heat island effect of urban agglomerations in arid and semiarid regions, so this paper selects the urban agglomeration of Hohhot, Baotou and Ordos(HBO) of Inner Mongolia, China as the study area. Based on the 8-day composite Moderate-resolution Imaging Spectroradiometer(MODIS) surface temperature data(156scenes in all) and land use maps for 2005, 2010, and 2015, we analyze the spatiotemporal distributions of regional heat(cool) islands(RH(C)I) and the responses of surface temperatures to land-use changes in the diurnal and interannual surface cities. The results showed that: 1) from 2005 to 2015, urban areas showed the cold island effect during the day, with the area of the cold island showing a shrinking feature;at night, they showed the heat island effect, with the area of the heat island showing a first decrease and then an increase.2) From 2005 to 2015, the land development(unutilized land to building land) brings the greatest temperature increase(ΔT = 1.36°C)during the day, while the greatest temperature change at night corresponds to the conversion of cultivated land to building land(ΔT =0.78°C) exhibited the largest changes at night. From 2010 to 2015, the land development(grassland to building land) bring the greatest temperature increase(ΔT = 0.85°C) during the day, while the great temperature change at night corresponds to the conversion of water areas to building land(ΔT = 1.38°C) exhibited the largest changes at night. Exploring the spatial and temporal evolution of surface urban heat(cool) islands in urban agglomerations in arid and semiarid regions will help to understand the urbanization characteristics of urban agglomerations and provide a reference for the formulation of policies for the coordinated and healthy development of the region and co-governance of regional environmental problems.展开更多
With the rapid development of economy,China’s urbanization process is accelerated.As major urban cluster center,Guangdong-Hong Kong-Macao Greater Bay Area is regarded as one of the most representative areas with the ...With the rapid development of economy,China’s urbanization process is accelerated.As major urban cluster center,Guangdong-Hong Kong-Macao Greater Bay Area is regarded as one of the most representative areas with the highest openness and the strongest economic vitality.Under the background of new era,main purpose of making development strategy of the Greater Bay Area is to build a world-class city cluster with great vitality,and establish a world-class science and technology innovation center with great influence.It also lays a good foundation for strengthening the construction of the belt and road initiative in China,and improves quality of life in the cooperation zone between the mainland and Hong Kong and Macao.Under the background,the tourism industry has new challenges,and the tourism spatial structure should be more closely linked.In this paper,tourism spatial structure of 9+2 urban agglomeration in the Greater Bay Area is taken as core research objective,and tourism resource of the urban agglomeration,and development of tourism economy and perfect transportation network in each city are analyzed.According to research results,the targeted suggestions and optimization methods are obtained.展开更多
Chengdu-Chongqing urban agglomeration covers a large number of rural areas.These areas have unique topographic conditions,diverse landscape types,and beautiful natural environment,but the economic conditions are under...Chengdu-Chongqing urban agglomeration covers a large number of rural areas.These areas have unique topographic conditions,diverse landscape types,and beautiful natural environment,but the economic conditions are underdeveloped;the ecological environment is fragile and the tourism carrying capacity is low.At the same time,they are facing the problems of lack of tourism facilities and low management level of scenic spots.Taking Yingshan area as an example,this paper evaluates the rural tourism development conditions from the aspects of location conditions,complementarity of tourism resources,highlights of tourism resources,tourist source conditions,and ecological environment,and makes a detailed plan for the functional zoning and tourism products of rural tourism development.The research shows that in order to realize the sustainable development of rural tourism resources,Chengdu Chongqing urban agglomeration should take the global tourism concept as the scientific guidance,ecological protection as the premise,agricultural resources as the basis,and culture as the soul,carry out rational,orderly,and scientific rural ecotourism development,and create high-quality rural ecotourism products.展开更多
This paper adopts the perspective of urban economic linkage and the modified urban economic gravity model to conduct a comparative analysis of the economic gravity among cities in China’s three major urban agglomerat...This paper adopts the perspective of urban economic linkage and the modified urban economic gravity model to conduct a comparative analysis of the economic gravity among cities in China’s three major urban agglomerations,including the Beijing-Tianjin-Hebei region,the Yangtze River Delta,and the Pearl River Delta.The results show that,despite the ever-tightening economic linkages among cities in the urban agglomerations,the development of the Beijing-Tianjin-Hebei region falls behind that of the Yangtze River Delta and the Pearl River Delta in terms of coordination,closeness,and balance.The economic linkages among cities in the Beijing-Tianjin-Hebei region are not as cohesive as they could be and display a significant“siphon effect”through Beijing and Tianjin as well as a prominently unidirectional economic flow.This study suggests that efforts should be put into directing the orderly flow of resources from Beijing and Tianjin to cities in Hebei and promoting a balanced economic flow among cities,thus facilitating the coordination of regional development.展开更多
The rapid development of modern urban agglomerations has reshaped the territory of China’s economic geography and reconstructed the spatial forms of Chinese cities and regions.Since the reform and opening-up,China’s...The rapid development of modern urban agglomerations has reshaped the territory of China’s economic geography and reconstructed the spatial forms of Chinese cities and regions.Since the reform and opening-up,China’s urban agglomerations have experienced three stages,i.e.spontaneous cultivation,rapid growth,and the super leading role of planning.The gian development area composed of super urban agglomerations is becoming an emerging geographic unit that improves the urban development quality promotes regional integration processes and participates in global industria competition and innovative resource allocations in China.While encountering challenges such as insufficient innovation kinetic energy and implementation difficulties of cross-regional coordination mechanisms,it has also ushered in new opportunities brought about by the shift of the global urban network system focus,the accelerated formation of high-speed rail urban belts,the rise of innovative geographic unit communities,etc.As entering the new era,centering on the high-quality development requirements of urbanization and urban agglomerations,China should establish a new mechanism for more effective coordinated regional development,build an urban pattern of coordinated development of large,medium and small cities and towns with urban agglomerations as the main body,comprehensively enhance the competitiveness of urban agglomerations and regions,and take a steady and innovation-driven road to modernization.展开更多
To study the difference of industrial location among different industries, this article is to test the spatial agglomeration across industries and firm sizes at the city level. Our research bases on a unique plant-lev...To study the difference of industrial location among different industries, this article is to test the spatial agglomeration across industries and firm sizes at the city level. Our research bases on a unique plant-level data set of Beijing and employs a distance-based approach, which considers space as continuous. Unlike previous studies, we set two sets of references for service and manufacturing industries respectively to adapt to the investigation in the intra-urban area. Comparing among eight types of industries and different firm sizes, we find that: 1) producer service, high-tech industries and labor-intensive manufacturing industries are more likely to cluster, whereas personal service and capital-intensive industries tend to be randomly dispersed in Beijing; 2) the spillover of the co-location of firms is more important to knowledge-intensive industries and has more significant impact on their allocation than business-oriented services in the intra-urban area; 3) the spatial agglomeration of service industries are driven by larger establishments, whereas manufacturing industries are mixed.展开更多
文摘With the rapid development of urban agglomerations in northwest arid and semiarid regions of China, the scope of the urban heat island(UHI) effect has gradually expanded and gradually connected, and has formed a regional heat island(RHI) with a larger range of impact to the regional environment. However, there are few studies on the heat island effect of urban agglomerations in arid and semiarid regions, so this paper selects the urban agglomeration of Hohhot, Baotou and Ordos(HBO) of Inner Mongolia, China as the study area. Based on the 8-day composite Moderate-resolution Imaging Spectroradiometer(MODIS) surface temperature data(156scenes in all) and land use maps for 2005, 2010, and 2015, we analyze the spatiotemporal distributions of regional heat(cool) islands(RH(C)I) and the responses of surface temperatures to land-use changes in the diurnal and interannual surface cities. The results showed that: 1) from 2005 to 2015, urban areas showed the cold island effect during the day, with the area of the cold island showing a shrinking feature;at night, they showed the heat island effect, with the area of the heat island showing a first decrease and then an increase.2) From 2005 to 2015, the land development(unutilized land to building land) brings the greatest temperature increase(ΔT = 1.36°C)during the day, while the greatest temperature change at night corresponds to the conversion of cultivated land to building land(ΔT =0.78°C) exhibited the largest changes at night. From 2010 to 2015, the land development(grassland to building land) bring the greatest temperature increase(ΔT = 0.85°C) during the day, while the great temperature change at night corresponds to the conversion of water areas to building land(ΔT = 1.38°C) exhibited the largest changes at night. Exploring the spatial and temporal evolution of surface urban heat(cool) islands in urban agglomerations in arid and semiarid regions will help to understand the urbanization characteristics of urban agglomerations and provide a reference for the formulation of policies for the coordinated and healthy development of the region and co-governance of regional environmental problems.
基金Sponsored by the Guangdong philosophy and social science project (GD17XGL03)Zhaoqing general project of philosophy and Social Sciences (18YB-02)Construction Project of Tourism Comprehensive Teaching Experiment and Training Center of Zhaoqing University (zlgc201816)。
文摘With the rapid development of economy,China’s urbanization process is accelerated.As major urban cluster center,Guangdong-Hong Kong-Macao Greater Bay Area is regarded as one of the most representative areas with the highest openness and the strongest economic vitality.Under the background of new era,main purpose of making development strategy of the Greater Bay Area is to build a world-class city cluster with great vitality,and establish a world-class science and technology innovation center with great influence.It also lays a good foundation for strengthening the construction of the belt and road initiative in China,and improves quality of life in the cooperation zone between the mainland and Hong Kong and Macao.Under the background,the tourism industry has new challenges,and the tourism spatial structure should be more closely linked.In this paper,tourism spatial structure of 9+2 urban agglomeration in the Greater Bay Area is taken as core research objective,and tourism resource of the urban agglomeration,and development of tourism economy and perfect transportation network in each city are analyzed.According to research results,the targeted suggestions and optimization methods are obtained.
基金supported by the Subproject of General Project of Humarities and Social Sciences Research Project of Chongqing Municipal Education Commission(No.21SKGH224).
文摘Chengdu-Chongqing urban agglomeration covers a large number of rural areas.These areas have unique topographic conditions,diverse landscape types,and beautiful natural environment,but the economic conditions are underdeveloped;the ecological environment is fragile and the tourism carrying capacity is low.At the same time,they are facing the problems of lack of tourism facilities and low management level of scenic spots.Taking Yingshan area as an example,this paper evaluates the rural tourism development conditions from the aspects of location conditions,complementarity of tourism resources,highlights of tourism resources,tourist source conditions,and ecological environment,and makes a detailed plan for the functional zoning and tourism products of rural tourism development.The research shows that in order to realize the sustainable development of rural tourism resources,Chengdu Chongqing urban agglomeration should take the global tourism concept as the scientific guidance,ecological protection as the premise,agricultural resources as the basis,and culture as the soul,carry out rational,orderly,and scientific rural ecotourism development,and create high-quality rural ecotourism products.
文摘This paper adopts the perspective of urban economic linkage and the modified urban economic gravity model to conduct a comparative analysis of the economic gravity among cities in China’s three major urban agglomerations,including the Beijing-Tianjin-Hebei region,the Yangtze River Delta,and the Pearl River Delta.The results show that,despite the ever-tightening economic linkages among cities in the urban agglomerations,the development of the Beijing-Tianjin-Hebei region falls behind that of the Yangtze River Delta and the Pearl River Delta in terms of coordination,closeness,and balance.The economic linkages among cities in the Beijing-Tianjin-Hebei region are not as cohesive as they could be and display a significant“siphon effect”through Beijing and Tianjin as well as a prominently unidirectional economic flow.This study suggests that efforts should be put into directing the orderly flow of resources from Beijing and Tianjin to cities in Hebei and promoting a balanced economic flow among cities,thus facilitating the coordination of regional development.
基金a phased achievement of the major project of Jiangsu Provincial Social Science Foundation "Study of the Coordinated Development of Jiangsu Province along the River and the Urban Agglomeration Construction of the Yangtze River"(16ZD005)
文摘The rapid development of modern urban agglomerations has reshaped the territory of China’s economic geography and reconstructed the spatial forms of Chinese cities and regions.Since the reform and opening-up,China’s urban agglomerations have experienced three stages,i.e.spontaneous cultivation,rapid growth,and the super leading role of planning.The gian development area composed of super urban agglomerations is becoming an emerging geographic unit that improves the urban development quality promotes regional integration processes and participates in global industria competition and innovative resource allocations in China.While encountering challenges such as insufficient innovation kinetic energy and implementation difficulties of cross-regional coordination mechanisms,it has also ushered in new opportunities brought about by the shift of the global urban network system focus,the accelerated formation of high-speed rail urban belts,the rise of innovative geographic unit communities,etc.As entering the new era,centering on the high-quality development requirements of urbanization and urban agglomerations,China should establish a new mechanism for more effective coordinated regional development,build an urban pattern of coordinated development of large,medium and small cities and towns with urban agglomerations as the main body,comprehensively enhance the competitiveness of urban agglomerations and regions,and take a steady and innovation-driven road to modernization.
基金State Key Program of National Natural Science of China(No.41230632)National Natural Science Foundation of China(No.41301123,41201169)
文摘To study the difference of industrial location among different industries, this article is to test the spatial agglomeration across industries and firm sizes at the city level. Our research bases on a unique plant-level data set of Beijing and employs a distance-based approach, which considers space as continuous. Unlike previous studies, we set two sets of references for service and manufacturing industries respectively to adapt to the investigation in the intra-urban area. Comparing among eight types of industries and different firm sizes, we find that: 1) producer service, high-tech industries and labor-intensive manufacturing industries are more likely to cluster, whereas personal service and capital-intensive industries tend to be randomly dispersed in Beijing; 2) the spillover of the co-location of firms is more important to knowledge-intensive industries and has more significant impact on their allocation than business-oriented services in the intra-urban area; 3) the spatial agglomeration of service industries are driven by larger establishments, whereas manufacturing industries are mixed.