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[1]WANG Yue-hui,ZHANG Lin-bo,GUO Yang,et al.Analysis of Spatiotemporal Pattern and Tendency of Land Desertification Sensitivity in Six Provinces of China[J].Research of Soil and Water Conservation,2014,21(05):132-137,143.

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Analysis of Spatiotemporal Pattern and Tendency of Land Desertification Sensitivity in Six Provinces of China

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 21 Number of periods: 2014 05 Page number: 132-137,143 Column: Public date: 2014-10-28

Title:: Analysis of Spatiotemporal Pattern and Tendency of Land Desertification Sensitivity in Six Provinces of China

Author(s):: WANG Yue-hui^1,2,3,4, ZHANG Lin-bo^1,2,3, GUO Yang^1,2,3, HE Ping^1,2,3, LIU Wei-ling^1,2,3, DU Jia-qiang^1,2,3, WANG Li-xia^1,2,3; 1. Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
2. State Environment Protection Key Laboratory of Regional Eco-process and Function Assessment, Beijing 100012, China;
3. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
4. College of Forestry, Southwest Forestry University, Kunming 650224, China

Keywords:: land desertification; sensitivity; CA-Markov coupling model; temporal pattern

CLC:: S288

DOI:: -

Abstract:: This research firstly analyzed the spatial distribution patterns and temporal dynamic characteristics of land desertification sensitivity of four periods (1990, 2000, 2005, 2010) in six provinces and regions of China: Xinjiang Uygur Autonomous Region, Qinghai Province, Gansu Province, Ningxia Hui Autonomous Region, Inner Mongolia Autonomous Region, Shaanxi Province. Then the causes of these changes were investigated with CA-Markov coupling model to predict the trends of land desertification sensitivity pattern. The results indicated that the desertification sensitivity patterns of the four periods were similar each other for the six provinces. The sensitivity levels could be characterized and the sum areas of the levels could be ordered as mildly sensitive region > moderate sensitive region > high sensitive region > non-sensitive region > extreme sensitive region. Extreme sensitive regions were mainly located in the desert areas with the soil texture being drifting sand dunes, while non-sensitive regions mainly distributed in mountains and lakes nearby. The regional sensitive level increased with the increase of local population and human activity intensity. On the contrary, the regional sensitive level decreased with the increase of the establishment of sand engineering area. The results of the predictions for the desertification sensitivity pattern in 2020 indicated that extremely sensitive area expanded 7 120.04 km² with the growth rate of 4.63% compared with 2010. This research provides a scientific basis for China desertification prevention, desert region partitioning strategy and the way to divide the desertification extension barrier area by analyzing the spatiotemporal pattern and trend of land desertification sensitivity in six provinces of China.

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