[1]Lü Guangbin,LIAO Tiejun,YAO Qiusheng,et al.Spatiotemporal Variation and Land Ecological Security and Its Evaluation in Chongqing City Based on DPSIR-EES-TOPSIS Model[J].Research of Soil and Water Conservation,2019,26(06):249-258,266.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 06
Page number:
249-258,266
Column:
Public date:
2019-10-17
- Title:
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Spatiotemporal Variation and Land Ecological Security and Its Evaluation in Chongqing City Based on DPSIR-EES-TOPSIS Model
- Author(s):
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Lü Guangbin1, LIAO Tiejun1, YAO Qiusheng2, DENG Wei3
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1. School of Resources and Environment, Southwest University, Chongqing 400715, China;
2. Chongqing Land Resources and Housing Surveying and Planning Institute, Chongqing 400020, China;
3. College of Public Administration, Guizhou University of Finance and Economics, Guiyang 550025, China
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- Keywords:
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land ecological security; DPSIR-EES-TOPSIS model; spatiotemporal variation; Chongqing City
- CLC:
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X826;F301.24
- DOI:
-
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- Abstract:
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Land ecological security is the basis of ecological environmental protection and regional ecological civilization construction. Based on DPSIR-EES model, the evaluation system of regional land ecological security of Chongqing City which is an important node of the Yangtze River Economic Zone is constructed. On the basis of the overall change of land ecological security in Chongqing City diagnosed by TOPSIS method, the spatial and temporal differentiation of regional land ecological security is studied by using ESDA-GIS method. The results show that:(1) the land ecological security of Chongqing City presents the fluctuating upward trend, and changes from ‘sensitive level’ to ‘good level’, and the subsystems of land ecological security tend to improve as a whole from 2009 to 2016; (2) from 2009 to 2016, the land ecological security of the main urban area had deteriorated, while the western, northeastern and southeastern parts of Chongqing City had improved; to be specific, the ‘sensitive level’ and ‘dangerous level’ of land ecological security concentrate in the main urban area and the western part of Chongqing, while the ‘critical level’ and ‘good level’ mainly distribute in the northeastern and southeastern parts of Chongqing City; (3) land ecological security in Chongqing the presents the strong positive spatial correlation and aggregation, and its ‘high-high’ and ‘low-low’ value areas present the increasing trend, and the distribution of the value is closely related to the natural ecological conditions and human activities. The results of this study can provide the reference for the protection of regional land ecosystem and the sustainable development of social economy.