Acta Geographica Sinica ›› 2012, Vol. 67 ›› Issue (12): 1587-1598.doi: 10.11821/xb201212001

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Comprehensive Evaluation of Land Spatial Development Suitability of the Yangtze River Basin

TANG Changchun1,2, SUN Wei2,3   

  1. 1. School of Civil Engineering and Architecture, Changsha University of Science and Technology, Changsha 410004, China;
    2. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    3. Key Laboratory of Regional Sustainable Development Modeling, CAS, Beijing 100101, China
  • Received:2012-01-28 Revised:2012-09-19 Online:2012-12-20 Published:2012-12-20
  • Supported by:

    National Social Science Foundation of China, No.09CJL045;China Postdoctoral Science Foundation Funded Project, No.2011M500377, No.2012T50127

Abstract: The evaluation of land spatial development suitability is the scientific foundation of spatial pattern optimization and regional coordinated development. So, the comprehensive evaluation of land spatial development suitability in the Yangtze River Basin can strengthen and deepen the understanding of land reasonable development of river basin and guide the river basin government and the sustainable development practice. According to "Three Steps and Four Principles", the county-level administrative area of the Yangtze River Basin is firstly defined, which includes 724 counties. Using the Delphi and Analytic Hierarchy Process (AHP) methods, the comprehensive evaluation index system and index weight coefficient are established. Furthermore, the single index evaluation and composite index evaluation are analyzed by using GIS spatial clustering method and dynamic weighted summation method, and population-economic spatial coupling degree is calculated by constructing coupling difference coefficient model. The results show that: the overall level of development constraint of the Yangtze River Basin is relatively high, high-value regions (Ⅴ to Ⅷ level) are mainly distributed in the upper and middle reaches of the basin. The spatial concentration degrees of development intensity and development potential are high, and the regional development gap is widening. The area of high value regions of comprehensive evaluation accounts for 22.95% of the total basin area, indicating that the suitable development area is in a minority of Yangtze River Basin area. The coupling difference coefficient between population and economy is 8.70, and the spatial coupling degree between population and economy is low. The variation of land spatial suitability is significant among the upper, middle reaches and lower reaches of the Yangtze River Basin. The high value regions include the Yangtze River Delta region, Hefei city and City Cluster along the Wanjiang River in Anhui Province, City Cluster of Wuhan and Jingzhou-Yichang region, Xiangyang-Nanyang region, City Cluster of Changsha-Zhuzhou-Xiangtan, Nanchang-Jiujiang-Xinyu region, City Cluster of Chengdu-Chongqing, Guiyang-Anshun region, Kunming city, and most of prefecture-level cities.

Key words: land space, comprehensive evaluation, development, suitability, Yangtze River Basin