Journal of Geographical Sciences >
Exploring spatial-temporal change and gravity center movement of construction land in the Chang-Zhu-Tan urban agglomeration
Li Zhuo (1996-), PhD, specialized in urban wetland and urban ecology. E-mail: lizhuo@mail.bnu.edu.cn |
Received date: 2018-09-04
Accepted date: 2018-12-07
Online published: 2019-12-13
Supported by
National Natural Science Foundation of China(No.41571077)
National Key Research and Development Program of China(No.2016YFC0503002)
Copyright
Urban agglomeration is caused by the continuous acceleration of the urbanization process in China. Studying the expansion of construction land can not only know the changes and development of urban agglomeration in time, but also obtain the great significance of the future management. In this study, taking Changsha-Zhuzhou-Xiangtan (Chang-Zhu-Tan) urban agglomeration in Hunan province as a study area, Landsat images from 1995 to 2014 and Autologistic-CLUE-S model simulation data were used. Moreover, several factors including gravity center, direction, distance and landscape index were considered in the analysis of the expansion. The results revealed that the construction area increased by 132.18%, from 372.28 km 2 in 1995 to 864.37 km 2 in 2014. And it might even reach 1327.23 km 2 in 2023. Before 2014, three cities had their own respective and discrete development directions. However, because of the integration policy implementation in 2008, the Chang-Zhu-Tan began to gather, the gravity center moved southward after 2014, and the distance between cities decreased, which was in line with the development plan of urban expansion. The research methods and results were relatively reliable, and these results could provide some reference for the future land use planning and spatial allocation in the urbanization process of Chang-Zhu-Tan urban agglomeration.
LI Zhuo , JIANG Weiguo , WANG Wenjie , LEI Xuan , DENG Yue . Exploring spatial-temporal change and gravity center movement of construction land in the Chang-Zhu-Tan urban agglomeration[J]. Journal of Geographical Sciences, 2019 , 29(8) : 1363 -1380 . DOI: 10.1007/s11442-019-1664-5
Figure 1 Location of the study area: Core area of the Chang-Zhu-Tan urban agglomeration |
Table 1 GDP, total population and construction land areas of the three cities from 1995 to 2014 |
Region | Indicators | 1995 | 2000 | 2005 | 2009 | 2014 |
---|---|---|---|---|---|---|
Changsha | GDP (100 million yuan) | 320.41 | 656.41 | 1519.90 | 3744.80 | 7824.81 |
Total population (10000 persons) | 562.82 | 586.00 | 620.92 | 651.59 | 671.40 | |
Construction land areas (km2) | 101.00 | 118.82 | 146.00 | 242.43 | 294.39 | |
Zhuzhou | GDP | 175.96 | 291.42 | 524.14 | 1024.89 | 2161.01 |
Total population | 364.03 | 372.00 | 377.96 | 382.80 | 396.10 | |
Construction land areas | 57.00 | 63.03 | 83.56 | 90.08 | 135.25 | |
Xiangtan | GDP | 138.81 | 213.70 | 366.84 | 739.38 | 1570.56 |
Total population | 274.29 | 280.00 | 290.62 | 295.26 | 291.50 | |
Construction land areas | 40.00 | 50.66 | 67.20 | 73.38 | 79.78 |
Figure 2 Construction land extracted from remote sensing data of the Chang-Zhu-Tan urban agglomeration from 1995 to 2014 |
Figure 3 The spatial distribution of driving factors in the Chang-Zhu-Tan urban agglomeration |
Figure 4 Simulation results of Autologistic-CLUE-S model for the Chang-Zhu-Tan urban agglomeration from 2009 to 2023 |
Figure 5 Construction land area expansion of Chang-Zhu-Tan urban agglomeration and each city from 1995 to 2023 |
Figure 6 Changing of gravity center in the Chang-Zhu-Tan urban agglomeration from 1995 to 2023 |
Figure 7 The development direction of construction land expansion in the Chang-Zhu-Tan urban agglomeration (the histogram represented the area of each district) |
Figure 8 The Change of distance and area in the urban boundary buffers from 1995 to 2023 |
Figure 9 The change regulation of four landscape indexes, including Contiguity index (Contig_AM), Aggregation index (AI), Cohesion index (Cohesion), and Euclidean nearest-neighbor distance (Enn_MN) |
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