南水北调东线工程徐州段河流生境质量评价

发布时间：2019-01-24 11:07

【摘要】：河流生境质量评价是河流生态系统健康评价的关键之一。本文评价自然和人为作用下的河流生境质量,以南水北调东线工程徐州段丰县、邳州两市输水通道上的河流为研究对象,结合环境特点,选择了反映河道生境、河岸生境和滨岸带生境的10个指标,给出了每个指标的评价方法和5级标准特征值,建立河流生境质量评价体系,确定评价指标的等级标准,对研究区内16个河段的生境质量状况进行综合评价。结果表明:(1)河流生境质量指数(IRHQ)综合得分介于33~91。根据评价等级划分标准,其中有50%的河段生境质量达到"优"等,其余介于"良"等到"劣"等,河流生境质量整体状况良好。(2)河流生境质量指数与NH_4~+-N、COD、TN呈负相关,与DO呈正相关,多项生境指标也与水质指标具有相关性,表明生境质量与水质的相互影响。
[Abstract]:The evaluation of river habitat quality is one of the key points in river ecosystem health assessment. In this paper, the river habitat quality under natural and man-made action is evaluated. The rivers in Fengxian County, Xuzhou Section and Pizhou City, Xuzhou Section of the East Route Project of South-to-North Water transfer Project, are taken as the research objects. Combined with the environmental characteristics, the river habitat is selected to reflect the river channel. Ten indexes of riparian habitat and shoreline habitat are given, and the evaluation method and 5 grade standard characteristic value of each index are given, and the evaluation system of river habitat quality is established, and the grade standard of evaluation index is determined. The habitat quality of 16 rivers in the study area was evaluated. The results showed that: (1) the comprehensive score of river habitat quality index (IRHQ) was between 33 and 91. According to the criteria of evaluation grade, 50% of the rivers reach "excellent" habitat quality, the others are between "good" and "bad", the overall quality of river habitat is good. (2) River habitat quality index and NH_4~ -NCOD. TN was negatively correlated with DO, and many habitat indexes were correlated with water quality, indicating the interaction between habitat quality and water quality.
【作者单位】：中国科学院南京地理与湖泊研究所;中国科学院大学;江西师范大学鄱阳湖湿地与流域研究教育部重点实验室;
【基金】：国家水污染治理重大专项(2012ZX07501002-008;2012ZX07506-001;2012ZX07103003-04-01;2012ZX07501-001-03) 国家重点基础研究发展计划(2012CB417006)~~
【分类号】：X826

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