应用生态学报2012，Vol.23Issue(7)：1891-1896,6.
“拉开档次”法的改进及其在河流生态健康评价中的应用
Improvement of "scatter degree" method and its application in evaluating river ecosystem health
摘要
Abstract
"Scatter degree" method is generally blamed for not capable of reflecting the subjective information of evaluator in comprehensive evaluation and for the complexity, uncertainty, and variety of the factors affecting river ecosystem health. In this paper, the "scatter degree" method was improved and applied to comprehensively evaluate the ecosystem health status of the upstream, midstream , and downstream of Beiyunhe River which flowed through Beijing and Tianjing. The ecosystem health value of upstream, midstream, and downstream was evaluated as 0. 539, 0. 521 and 0. 546, respectively, indicating that these streams were in sub-health condition. The environmental status of flowing water was the most important factor affecting the River' s ecosystem health. With the application of the improved method to evaluate river ecosystem health, both the evaluator' s subjective judgment and the data' s objective information could be included, the evaluation process was transparent, and the evaluation results were scientific, reasonable, objective, and reliable, suggesting that this method could be served as a technical support and a basis for the comprehensive treatment of rivers.关键词
"拉开档次"法/综合评价/河流生态系统健康Key words
"scatter degree" method/ comprehensive evaluation/ river ecosystem health.分类
资源环境引用本文复制引用
宋刚福,沈冰..“拉开档次”法的改进及其在河流生态健康评价中的应用[J].应用生态学报,2012,23(7):1891-1896,6.基金项目
国家自然科学基金项目(50939004)和国家水体污染控制与治理科技重大专项(2008ZX07209-002-04)资助. （50939004）
