基于水电梯级开发的河流生态健康研究

发布时间：2018-02-09 10:30

本文关键词： 雅砻江生态系统健康结构熵权法赋值评分法完整性　出处：《长江流域资源与环境》2016年06期 　论文类型：期刊论文

【摘要】：为进一步了解水电开发对河流健康的影响,本文以雅砻江下游水电梯级开发为例,构建河流健康评价指标体系,选择无人为干扰和干扰较小的河流为参照,以指标变化率衡量水电梯级开发前后河流受扰动程度,分别采用综合评价法和赋值评分法进行了定量评价。综合评价结果显示,雅砻江下游河段的综合健康指数为0.71,该研究区域在丰水期、平水期和枯水期的综合健康指数分别为0.74、0.70和0.69,均处于亚健康状态;赋值评分法结果显示建库前的河流健康指数(River health index,RHI)为19.1,等级为健康,建库后为14.3,等级为亚健康,两种方法评价结果基本一致。本文以期完善河流健康评价体系,并为生态修复提供依据。
[Abstract]:In order to further understand the impact of hydropower development on river health, this paper takes hydropower cascade development in the lower reaches of Yalong River as an example to construct a river health evaluation index system, and selects unattended and less disturbed rivers as reference. The disturbance degree of rivers before and after hydropower cascade development is measured by the index change rate. The comprehensive evaluation method and the assignment scoring method are used to evaluate the river disturbance degree respectively. The comprehensive evaluation results show that, The comprehensive health index of the lower reaches of Yalong River is 0.71. The comprehensive health index of the study area in the periods of high water, plain water and dry water is 0.74U 0.70 and 0.69, respectively. The evaluation results of the evaluation method showed that the river health index (health health index) before the establishment of the reservoir was 19.1, the grade was healthy, after the establishment of the reservoir was 14.3and the grade was sub-health. The results of the two methods were basically the same. This paper aims to improve the river health evaluation system. And provide the basis for ecological restoration.
【作者单位】：三峡大学水利与环境学院;湖北工业大学资源与环境学院;宜昌市水利水电局;
【基金】：国家自然科学基金青年科学基金项目(51309139) 三峡库区生态环境教育部工程研究中心开放基金项目(2015KF-05)~~
【分类号】：X824

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