太子河本溪城区段河道栖息地健康评价

Health assessment of river habitat in the Benxi City section of the Taizi River

为了对太子河本溪城区段的河道栖息地健康状况进行综合评价,通过对太子河本溪城区段河道栖息地实际情况进行调查,结合国内外现有的研究成果,构建了基于自然状况、水动力与生物指标三个方面的河道栖息地健康评价指标体系,通过层析分析法计算出各样点的评价得分。结果表明:(1)该河段仅有16.7%的河道栖息地处于较好状况,75%的河道栖息地处于一般状况,剩余的8.3%的河道栖息地状况较差;(2)拦河坝的修建会影响河流自然形态,影响河道栖息地中动植物生长情况,进而影响河道栖息地健康状况。研究成果能够为河流生态系统的修复提供支撑。

In order to comprehensively evaluate the health status of river habitat in Benxi City section of Taizi River,the actual situation of the section is investigated combining with the existing domestic and international results,a river habitat health evaluation index system based on three aspects of natural conditions,hydrodynamics and biological indicators is constructed.The AHP is used to calculate the evaluation score of each sample point.The result shows that,there are only 16.7%of the river habitats are in good condition,75%of the river habitats are in general condition,and the remaining 8.3%of the river habitats are in poor condition.The construction of the dam will affect the natural form of the river,and then the growth of plants and animals in the river habitat,finally the health of the river habitat will be affected.The results can provide certain support for the restoration of river ecosystem.