| 塔里木河流域下游植被生态风险遥感定量评估 |
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| 引用本文： | 蒋良群,舒成强,陈曦,包安明.塔里木河流域下游植被生态风险遥感定量评估[J].干旱区研究,2008,25(4). |
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| 作者姓名： | 蒋良群 舒成强 陈曦 包安明 |
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| 作者单位： | 1. 西华师范大学,国土资源学院,四川,南充,637002
2. 中国科学院,新疆生态与地理研究所,新疆,乌鲁木齐,830011 |
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| 基金项目： | 西华师范大学校科研和教改项目，国家工程项目 |
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| 摘 要： | 近年来,生态风险评估已被人们所重视,但到目前为止,生态风险评估还没有一套完整的方法体系。以我国最大的内陆河——塔里木河下游为研究区,将遥感、地理信息系统等技术手段与模糊数学方法相结合,根据ERA框架和层次分析思想建立塔里木河下游植被的生态风险评估指标,运用模糊综合评判的方法进行塔里木河下游植被生态风险的遥感定量评估,并在评估结果的基础上进行可视化分析。结果表明:在流域生态风险评估缺乏有效的定量评估方法的情况下,Fuzzy集合论与AHP方法结合的模糊综合评判方法是可行的,具有较高的科学性;运用遥感、地理信息系统(GIS)等技术手段,实现了评估结果的定性、定量和可视化。
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| 关 键 词： | 生态风险评估 遥感 植被 模糊评价 塔里木河 |
Quantitative Assessment on Ecological Risk of Riparian Vegetation in Arid Areas |
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| JIANG Liang-qun,SHU Cheng-qiang,CHEN Xi,BAO An-ming.Quantitative Assessment on Ecological Risk of Riparian Vegetation in Arid Areas[J].Arid Zone Research,2008,25(4). |
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| Authors: | JIANG Liang-qun SHU Cheng-qiang CHEN Xi BAO An-ming |
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| Abstract: | Ecological Risk Assessment(ERA) has played an important role in environmental science and paid more and more attention to since recent years.However,there is no a set of integrated methods in Ecological Risk Assessment yet.In this paper,a case study on ecological risk assessment of natural vegetation in the lower reaches of the Tarim River,the longest continental river in China,is carried out,an index system of ecological risk assessment of natural vegetation there is developed by applying the advanced RS and GIS means,fuzzy mathematic methods,ERA framework and analytic hierarchy process(AHP),and a quantitative ecological risk assessment on natural vegetation in the lower reaches of the Tarim River is carried out using the methods of Fuzzy Synthetic Evaluation and the RS and GIS means,on which a visualized analysis is processed.The results show that the fuzzy integration evaluation based on the fussy assembling thesis and AHP method is feasible and scientific,and the qualitative,quantitative and visualized assessment results about ecological risk of natural vegetation can be achieved by applying the advanced RS and GIS means.The study results reveal that the ecological risk of natural vegetation in the lower reaches of the Tarim River is high,especially in the zone from Yengisu to the Taitema Lake. |
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| Keywords: | arid area ecological risk assessment remote sensing vegetation fuzzy evaluation |
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