| Evaluation of Eco-Environmental Stability Based on GIS in Tibet, China |
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| 作者姓名： | ZHONGCheng HEZong-yi LIUShu-zhe |
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| 作者单位： | [1]CollegeofResourcesandEnvironmentalSciences,WuhanUniversity,Wuhan430079,Hubei,China [2]InstituteofMountainHazardsandEnvironment,ChineseAcademyofSciencesandMinistryofWaterConservancy,Chengdu610041,Sichuan,China |
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| 基金项目： | SupportedbyEarlyStageSpecialResearchonKeyBasicResearchProjectofChina(2004CCA03600) |
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| 摘 要： | By making an evaluation index system and using Analytical Hierarchy Process (AHP) to determine the evaluation factor‘s weights, this paper builds the valuation model of Eco-environmental stability of Tibet and uses the overlay function of raster-GIS (geographic information systems) to make a result map and finds the distribution characteristics of Eco-environmental stability of Tibet based on the analysis of result map. The study shows that the Eco-environmental stability of Tibet is almost good and the unstable region which isonly 9. 78% of the total area of Tibet is distributed in the middle and low reaches of Yarlung river. To protect the Eco-environmental of the unstable area from farther degenerating, the government should pay more attention on the Eco-environmental construction work on this area.
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| 关 键 词： | 生态环境 稳定性 覆盖图分析 GIS 地理信息系统 中国 西藏 |
Evaluation of eco-environmental stability based on GIS in Tibet, China |
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| ZHONGCheng HEZong-yi LIUShu-zhe.Evaluation of Eco-Environmental Stability Based on GIS in Tibet, China[J].Wuhan University Journal of Natural Sciences,2005,10(4):653-658. |
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| Authors: | Zhong Cheng He Zong-yi Liu Shu-zhen |
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| Institution: | 1. College of Resources and Environmental Sciences, Wuhan University, 430079, Wuhan, Hubei, China
2. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences and Ministry of Water Conservancy, 610041, Chengdu, Sichuan, China
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| Abstract: | By making an evaluation index system and using Analytical Hierarchy Process (AHP) to determine the evaluation factor's weights,
this paper builds the valuation model of Eco-environmental stability of Tibet and uses the overlay function of raster-GIS
(geographic information systems) to make a result map and finds the distribution characteristics of Eco-environmental stability
of Tibet based on the analysis of result map. The study shows that the Eco-environmental stability of Tibet is almost good
and the unstable region which is only 9.78% of the total area of Tibet is distributed in the middle and low reaches of Yarlung
river. To protect the Eco-environmental of the unstable area from farther degenerating, the government should pay more attention
on the Eco-environmental construction work on this area. |
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| Keywords: | eco-environmental stability overlay analysis GIS Tibet |
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