Acta Geographica Sinica ›› 2015, Vol. 70 ›› Issue (4): 650-663.doi: 10.11821/dlxb201504012

• Orginal Article • Previous Articles     Next Articles

Appraisal of land resources security in the post-earthquake reconstruction area of Lushan earthquake

Qing TANG1,2(), Yong XU1,2(), Xiaohui DONG3, Yang LI4, Yanhua LIU5, Xiaoyi SUN1,2,6   

  1. 1. Key Laboratory of Regional Sustainable Development Modeling, CAS, Beijing 100101, China
    2. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China
    3. Department of Land Resources and Geomatics Engineering, Shandong Agriculture and Engineering University, Jinan 250100, China
    4. China Center for Modernization Research, CAS, Beijing 100190, China
    5. School of Economics and International Trade, Zhejiang University of Finance and Economics, Hangzhou 310018, China
    6. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2014-05-21 Revised:2014-12-05 Online:2015-04-20 Published:2015-04-20
  • Supported by:
    National Natural Science Foundation of China, No.41301121, No.41430636, No.41171449;Key Research Program of the Chinese Academy of Sciences, No.KZZD-EW-06-01;Science and Technology Service Network Initiative of the Chinese Academy of Sciences, No.KFJ-EW-STS-003

Abstract:

The land resources security appraisal of the post-earthquake reconstruction area is one of the fundamental tasks for resource-environment carrying capacity assessment. It could provide scientific reference for post-earthquake reconstruction. This paper takes Lushan earthquake as a case and identifies 3 factor groups including geological conditions and disaster risks, water and land resources conditions, and eco-environment as well as 8 factors. The appraisal model of land resources security in Lushan post-earthquake reconstruction area is constructed, and the land resources security at grid and administrative scales is analyzed with the aid of GIS spatial analysis technique. The results show that: the area of high safe class amounts to 2409.30 km2, accounting for 5.63% of the total land area, and it is mainly distributed on the eastern piedmont plains, which should be regarded as the first choice for reconstruction site selection; the middle safe class could be the supplementary choice of high safe class, and the low safe class needs to be selected for reconstruction with concrete protection measures; only 6 out of 21 counties in the stricken area have the land resource security index above 0.60, and all of them are located on the eastern piedmont plains; in the 6 hard-hit counties, only Mingshan has relatively high land resource security index (0.76), with 468.33 km2 available land for reconstruction and relatively high available land for reconstruction per capita; Mingshan should be regarded as the preferred region for large-scale population aggregation, urbanization and industrialization development for the relocation settlements of hard-hit areas. The appraisal model developed in this study is applicable to the regions with similar geological disasters, and it could also provide reference for the studies on the regions with similar geological, topographic, resources, and environmental conditions.

Key words: land resources security, post-earthquake reconstruction, geographical information system, resource-environment carrying capacity, Lushan earthquake