乡村河道生态修复技术评价与选择

[目的]探讨乡村河道生态修复技术综合评价方法,为乡村河道生态修复技术选择提供理论依据。[方法]采用模糊层次综合评价法,从经济效益、社会及生态环境效益、对河道基本功能的影响、污染情况、自然条件等5个方面,系统地构建了乡村河道生态修复技术评价的指标体系。[结果]合肥市派河紫蓬镇河段4种生态修复技术综合评价值分别为:植物修复85.058,河道曝气70.255,人工湿地73.456,生态浮床68.018,表明应选择植物修复技术进行生态修复。[结论]应用模糊层次分析法所建立的生态修复技术评价体系全面客观,结合所确定的选择标准可为乡村河道选择适宜的生态修复技术提供参考。

Evaluation and Selection of Ecological Restoration Technology in Rural River

[Objective] The objective of this paper was to discuss the evaluation method of rural river ecological restoration technology, and to provide theoretical basis for the ecological restoration of rural river.[Methods] Considering economic benefits, social and ecological environmental benefits, the impact of river basic functions, pollution and natural conditions, this paper established an index system of comprehensive assessment on the ecological restoration of rural river by fuzzy analytic hierarchy process(FAHP).[Results] The comprehensive assessment values of four kinds of ecological restoration technologies of Zipeng Town reach of Paihe River in Hefei City were as follows:the evaluation values of phytoremediation, river aeration, constructed wetlands and ecological floating bed were 85.058, 70.255, 73.456 and 68.018 respectively. Phytoremediation was determined to be adopted for the ecological restoration.[Conclusion] The application of ecological restoration technology assessment system established by the FAHP was comprehensive and objective. If combined with the decided selection criteria, it can provide references for the selection of appropriate ecological restoration technology of rural river.