Ecological Vulnerability Assessment in the Middle and Lower Reaches of the Hanjiang River Basin
Ecological Vulnerability Assessment in the Middle and Lower Reaches of the Hanjiang River Basin
复制标题
汉江中下游流域生态脆弱性评价
DOI：
--
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Gaoliao Jing
中科院分区：
文献类型：
--
作者：
Hailin Zhang;Xiaowei Lin;Guangming Yu;Xiang Huang;Gaoliao Jing
本文的目的是建立生态脆弱性评价框架，并利用该框架对汉江流域中下游生态脆弱性进行评价。基于因果关系理论，提出了流域尺度生态脆弱性评价指标体系。选取12个指标构成生态脆弱性评价框架。以2000年Landsat TM影像为基础，以ERDAS和GIS软件为技术支持，进行了实证研究。研究结果表明，汉江流域生态脆弱性空间差异的总体特征为：平原区生态脆弱性表现最脆弱，丘陵区生态脆弱性表现中等，山区生态脆弱性表现最弱。
The purpose of this paper is to develop a framework of ecological vulnerability assessment, and to assess the ecological vulnerability by this framework in the middle and lower reaches of the Hanjiang River Basin. Based on the theory of cause - and - consequence, we proposed an indicator system of ecological vulnerability assessment at basin scale. Twelve indicators are selected to constitute the proposed framework of ecological vulnerability assessment. Based on the Landsat TM images acquired in 2000 and technical support of ERDAS & GIS software, an empirical study was carried out. The results of study show that the general characteristics of ecological vulnerability in spatial differences in the Hanjiang River Basin are as follows: the expression of ecological vulnerability is the most vulnerable in the plain regions, the middle vulnerable in hilly regions, and the weakest vulnerable in mountainous regions.