Characteristics Of Urban Agglomeration Research Articles

Research on the Spatial Expansion Characteristics and Industrial and Policy Driving Forces of Chengdu–Chongqing Urban Agglomeration Based on NPP-VIIRS Night Light Remote Sensing Data

In the context of rapid urbanization development, exploring the driving forces and characteristics of urban agglomerations’ spatial expansion not only enriches the depth and breadth of research on urban agglomerations’ expansion in China, but also has great significance for future urban development planning, rational utilization of land resources, and protection of ecological environment. This study selects nighttime light data to extract the built-up areas of the Chengdu–Chongqing urban agglomeration from 2012 to 2020, and uses urban expansion speed, urban expansion intensity, urban center of gravity migration, compactness, and fractal dimension index, combined with driving force analysis, to explore its development. The results show the following: (1) From 2012 to 2020, the Chengdu–Chongqing urban agglomeration expanded around Chengdu and Chongqing, and the expansion scale of each city first increased and then decreased. (The expansion scale is a comprehensive result obtained by using the formula of urban expansion speed and expansion intensity, indicating the extent of urban expansion.) (2) The expansion direction of the Chengdu–Chongqing urban agglomeration keeps close to Chengdu and Chongqing. The urban spatial form is not stable and begins to focus on urban interior filling. (Urban interior filling refers to the infrastructure construction and content enrichment and renewal within an urban built-up area.) (3) The spatio-temporal expansion of the Chengdu–Chongqing urban agglomeration from 2012 to 2020 is most affected by the levels of economic development and regional investment.

Research on Urban Resource Allocation and Regional Environmental Innovation in Hefei Metropolitan Area

The planning of urban agglomerations and metropolitan areas is to better coordinate the development of urban resources and the environment, coordinate the relationship between urban construction and population distribution, resource development, environmental improvement and infrastructure construction. The practice of urban agglomeration resources and environmental planning in developed countries has a history of nearly 100 years, while China is still in its infancy. Take New York, London, Paris, Tokyo and other metropolitan areas as examples, from the distribution of resources, environmental engineering, industrial layout and transportation route distribution as the research objects, study and analyze the planning and development process of urban agglomeration resources and environment. Summarizes the development model and characteristics of urban agglomerations, and puts forward suggestions on the development of resources and environment in the Hefei metropolitan area on this basis.

Influence of Thermal Air Pollution on the Urban Climate (Estimates Using the COSMO-CLM Model)

It is well known that large cities and urban agglomerations not only make a decisive contribution to the growth of greenhouse gases in the atmosphere, but also significantly shape their own climate by transforming the underlying surface of urban areas, as well as thermal, gas and aerosol pollution of the urban boundary layer of the atmosphere. The most powerful manifestation of the city’s influence on local and regional climate processes is the thermal pollution of the atmosphere created by anthropogenic heat fluxes forming primarily due to the energy consumption of the urban economy. This paper summarizes the results of the work of the authors on numerical modeling of the influence of anthropogenic heat fluxes (thermal pollution of the urban atmosphere) on the climatic characteristics of urban agglomerations using the COSMO-CLM mesoscale climate model. The work was carried out as part of the Analysis of an impact of the regional climate change on the residential and commercial energy consumption of Russian megacities project of the Russian Science Foundation.

Comprehensive Classification of Urban Agglomeration Types in China

Urban agglomeration is not only an important carrier of China's new urbanization strategy, but also a new regional unit for the country to participate in global competition and international division of labor. At present, China's regional spatial governance model is undergoing a major change, from the original administrative division management to the type of regional spatial governance. Based on the important extension characteristics of urban agglomerations, this paper classifies 23 urban agglomerations in China with the idea of comprehensive classification, and obtains the index system and clustering results of type classification, which provides scientific basis for the planning guidance of spatial pattern optimization and classification management of urban agglomerations in China. Referring to the scale and degree of agglomeration of mature urban agglomerations in the world, based on the four characteristics of urban agglomerations, the index system is constructed. Fuzzy C-means clustering (FCM) method is used to quantitatively classify Chinese urban agglomerations into five types.

Research on the Measurements of the Disequilibrium Degree of the Urban Agglomeration Traffic Supply and Demand

Firstly, this paper gives the concept and characteristics of urban agglomeration, and analyzes the relationship between urban transport systems and urban transport group between. Then in urban agglomerations disequilibrium between supply and demand characteristics of the traffic, and analyzes the factors that influence urban agglomeration traffic. And expanding the range of travel modes, including road, rail, air and maritime transport, proposed determination method of urban agglomeration traffic supply and demand disequilibrium. Finally, numerical example is used to analyze its practicality and feasibility.

The Urbanization Spatial-Temporal Patterns Exploration of Capital Urban Agglomerations in Three Provinces of Central China

Following strategies of Coastal Open Go West and Reviving Northeastern Old Industrial Base the state put forward the strategy of Rising of Central China in order to promote its rapid development. Urban agglomeration in Central China is becoming academic focus with unprecedented development momentum. It applies multidisciplinary theory of human geography, regional economics, etc. and takes urban agglomeration of Hunan, Henan and Hubei provinces for example to empirical analysis. Firstly, analyzing the historical evolution, urbanization space development and patterns then comes to spatial association of urban and rural through comparison, Finally, showing the development characteristics of urban agglomeration in Central China and putting forward urbanization suggestion.