scholarly journals Land space simulation of urban agglomerations from the perspective of the symbiosis of urban development and ecological protection: A case study of Changsha-Zhuzhou-Xiangtan urban agglomeration

2021 ◽  
Vol 126 ◽  
pp. 107669
Author(s):  
Jingzhi Li ◽  
Xiao Ouyang ◽  
Xiang Zhu
Keyword(s):  
Urban Development ◽  
Urban Agglomeration ◽  
Urban Agglomerations ◽  
Ecological Protection ◽  
Land Space

scholarly journals The Construction and Optimization of Ecological Security Pattern in the Harbin-Changchun Urban Agglomeration, China

2019 ◽  
Vol 16 (7) ◽  
pp. 1190 ◽  
Author(s):  
Rong Guo ◽  
Tong Wu ◽  
Mengran Liu ◽  
Mengshi Huang ◽  
Luigi Stendardo ◽  
...  
Keyword(s):  
Urban Agglomeration ◽  
Ecosystem Functions ◽  
Ecological Security ◽  
Least Cost Path ◽  
Rapid Urbanization ◽  
Songhua River ◽  
Urban Agglomerations ◽  
Ecological Corridors ◽  
Ecological Protection ◽  
Security Pattern

Urban agglomerations have become a new geographical unit in China, breaking the administrative fortresses between cities, which means that the population and economic activities between cities will become more intensive in the future. Constructing and optimizing the ecological security pattern of urban agglomerations is important for promoting harmonious social-economic development and ecological protection. Using the Harbin-Changchun urban agglomeration as a case study, we have identified ecological sources based on the evaluation of ecosystem functions. Based on the resistance surface modified by nighttime light (NTL) data, the potential ecological corridors were identified using the least-cost path method, and key ecological corridors were extracted using the gravity model. By combining 15 ecological sources, 119 corridors, 3 buffer zones, and 77 ecological nodes, the ecological security pattern (ESP) was constructed. The main land-use types composed of ecological sources and corridors are forest land, cultivated land, grassland, and water areas. Some ecological sources are occupied by construction, while unused land has the potential for ecological development. The ecological corridors in the central region are distributed circularly and extend to southeast side in the form of tree branches with the Songhua River as the central axis. Finally, this study proposes an optimizing pattern with "four belts, four zones, one axis, nine corridors, ten clusters and multi-centers" to provide decision makers with spatial strategies with respect to the conflicts between urban development and ecological protection during rapid urbanization.

scholarly journals Spatial Network Structures of Urban Agglomeration Based on the Improved Gravity Model: A Case Study in China’s Two Urban Agglomerations

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
Yubo Zhao ◽  
Gui Zhang ◽  
Hongwei Zhao
Keyword(s):  
Gravity Model ◽  
Yangtze River Delta ◽  
Urban Agglomeration ◽  
Spatial Distance ◽  
Range Limit ◽  
Population Mobility ◽  
Urban Agglomerations ◽  
City Network ◽  
The City

Research on urban agglomerations from the perspective of network spatial structure is important to promote their sustainable development. Based on online and traditional data, this paper first improves three aspects of the traditional spatial gravity model—city quality, the gravitation coefficient, and city distance—considering urban center functional intensity and population mobility tendencies. The resulting improved directional gravity model is applied to analyze the structure of the city network for two urban agglomerations in China, the Beijing-Tianjin-Hebei urban agglomeration (BTHUA) and the Yangtze River Delta urban agglomeration (YRDUA). The results of the study are as follows: (1) the existing urban connections have obvious hierarchies and imbalances, with the YRDUA urban hierarchical connections being of larger scale. (2) Cities are closely connected, but city networks are unbalanced, though the YRDUA has more balanced urban development. (3) Each node city has a clear radiation range limit, and spatial distance remains an important constraint on urban connections. The backbone network of the BTHUA has a triangular shape and trends toward a “sparse north and dense south,” while the YRDUA is characterized by multiple axes and an overall distribution that trends toward a “dense north and sparse south.” (4) Cities with poor comprehensive strength are more likely to be captured, forming an attract and be attracted relationship. (5) The BTHUA and the YRDUA each form three communities.

scholarly journals CASE-STUDY FOR GEOGRAPHY RESEARCHERS: BARCELONA

2021 ◽  
pp. 78-93
Author(s):  
Никита Дмитриевич Соколов ◽  
Светлана Ивановна Яковлева
Keyword(s):  
Urban Space ◽  
Spatial Planning ◽  
Research Topic ◽  
Urban Agglomeration ◽  
Urban Agglomerations ◽  
Territorial Planning ◽  
The World ◽  
Professional Assessment

Предложена авторская разработка кейса для изучения городских агломераций в курсе «Пространственное планирование» - для магистров-географов. Городские агломерации как основные формы современного городского пространства - это один из типов районов территориального планирования (районной планировки) во всех странах мира. В России для городских агломераций разрабатываются Схемы территориального планирования. В географии - это популярная тема исследований. Опыт профессиональной оценки трансформации планировочной структуры городских агломераций - важная компетенция географов-исследователей. Кейс разработан для Барселоны (Испания). The author developed a case study for the study of urban agglomerations in the course «Spatial Planning» for geographers. City agglomerations as the main forms of modern urban space - this is one of the types of areas of territorial planning (district planning) in all countries of the world. In Russia, for urban agglomeration, Territorial planning schemes are being developed. In geography, this is a popular research topic. The experience of professional assessment of the transformation of the planning structure of urban agglomerations is an important competence of geography researchers. The case was developed for Greater Damascus (Syria).

Regulation of Urban Agglomeration Processes in Russia: Problems and Approaches to Their Solution

2019 ◽  
pp. 25-35
Author(s):  
N.I. Kuznetsov
Keyword(s):  
Urban Development ◽  
Urban Agglomeration ◽  
Global Trends ◽  
Urban Agglomerations

The author considers the peculiarities of regulation of urban agglomerations in Russia. The opinions of a number of experts on the relevant issues are presented and commented on, the author's approaches to their solution taking into account global trends in urban development are proposed.

scholarly journals CASE-STUDY FOR GEOGRAPHY RESEARCHERS: BIG DAMASCUS

2020 ◽  
pp. 90-103
Author(s):  
Мохаммад Исса Альсулейман
Keyword(s):  
Spatial Planning ◽  
Research Topic ◽  
Urban Agglomeration ◽  
Urban Settlement ◽  
Urban Agglomerations ◽  
Territorial Planning ◽  
The World ◽  
Professional Assessment

Предложена авторская разработка кейса для изучения городских агломераций в курсе «Пространственное планирование» - для магистров-географов. Городские агломерации как основные формы современного городского расселения - это один из типов районов территориального планирования (районной планировки) во всех странах мира. В России для городских агломерации разрабатываются Схемы территориального планирования. В географии - это популярная тема исследований. Опыт профессиональной оценки трансформации планировочной структуры городских агломераций - важная компетенция географов-исследователей. Кейс разработан для Большого Дамаска (Сирия). The author developed a case study for the study of urban agglomerations in the course «Spatial Planning» for geographers. City agglomerations as the main forms of modern urban settlement - this is one of the types of areas of territorial planning (district planning) in all countries of the world. In Russia, for urban agglomeration, Territorial planning schemes are being developed. In geography, this is a popular research topic. The experience of professional assessment of the transformation of the planning structure of urban agglomerations is an important competence of geography researchers. The case was developed for Greater Damascus (Syria).

scholarly journals 3D geological models and their hydrogeological applications: supporting urban development a case study in Glasgow-Clyde, UK

2010 ◽  
Vol 161 (2) ◽  
pp. 251-262 ◽  
Author(s):  
S. Diarmad G. Campbell ◽  
Joanne E. Merritt ◽  
Brighid E O Dochartaigh ◽  
Majdi Mansour ◽  
Andrew G. Hughes ◽  
...  
Keyword(s):  
Urban Development ◽  
Geological Models

scholarly journals Spatiotemporal Distribution Characteristics and Driving Forces of PM2.5 in Three Urban Agglomerations of the Yangtze River Economic Belt

2021 ◽  
Vol 18 (5) ◽  
pp. 2222
Author(s):  
Jin-Wei Yan ◽  
Fei Tao ◽  
Shuai-Qian Zhang ◽  
Shuang Lin ◽  
Tong Zhou
Keyword(s):  
Geographically Weighted Regression ◽  
Yangtze River ◽  
National Level ◽  
National Development ◽  
Urban Agglomeration ◽  
Spatiotemporal Distribution ◽  
Weighted Regression ◽  
Series Data ◽  
The Yangtze River ◽  
Urban Agglomerations

As part of one of the five major national development strategies, the Yangtze River Economic Belt (YREB), including the three national-level urban agglomerations (the Cheng-Yu urban agglomeration (CY-UA), the Yangtze River Middle-Reach urban agglomeration (YRMR-UA), and the Yangtze River Delta urban agglomeration (YRD-UA)), plays an important role in China’s urban development and economic construction. However, the rapid economic growth of the past decades has caused frequent regional air pollution incidents, as indicated by high levels of fine particulate matter (PM2.5). Therefore, a driving force factor analysis based on the PM2.5 of the whole area would provide more information. This paper focuses on the three urban agglomerations in the YREB and uses exploratory data analysis and geostatistics methods to describe the spatiotemporal distribution patterns of air quality based on long-term PM2.5 series data from 2015 to 2018. First, the main driving factor of the spatial stratified heterogeneity of PM2.5 was determined through the Geodetector model, and then the influence mechanism of the factors with strong explanatory power was extrapolated using the Multiscale Geographically Weighted Regression (MGWR) models. The results showed that the number of enterprises, social public vehicles, total precipitation, wind speed, and green coverage in the built-up area had the most significant impacts on the distribution of PM2.5. The regression by MGWR was found to be more efficient than that by traditional Geographically Weighted Regression (GWR), further showing that the main factors varied significantly among the three urban agglomerations in affecting the special and temporal features.

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