摘要
Abstract
By taking the comprehensive improvement of Nanchuanhe River in Xining as the study case,the organic integration of the improving tasks,such as eco-restoration,flood control and security,constructions of water culture and water landscape,etc.,during the river improvement is discussed herein.Through the analysis on the status and the existing problems of Nanchuanhe River,the measures of building up sedimentation pond for reducing silt content,intercepting pollution along the whole river for removing pollution sources,constructing eco-slope protection with Renault pads,constructing three-step surface flow wetland,etc.are adopted for reducing pollutants in water,improving river water quality,making waterfront cultural gallery in combination with Hehuang Culture and then enhancing the city level.After the implementation of Nanchuanhe River Improvement Project,the cluttered and disordered appearance of both the river banks is thoroughly changed,thus not only the flood carrying capacity of the river is enhanced,but the water quality of the river is also improved.Moreover,the effect of the project in the aspects of promoting the restoration of riverine wetland,increasing bio-diversity of the river,enhancing the habitat functions,etc.is significant.Under the premise of meeting the demand of eco-flow,the sedimentation rate of the sedimentation pond reaches to 64.6％ ～ 72.3％,while the wetland construction can decrease ammonia-nitrogen content by 0.13 mg/L and BOD content by 0.60 mg/L.The principle of respecting nature,scientific improvement,playing social functions,etc.is all along followed by Nanchuanhe River Improvement Project,which has a certain reference value for the improvement of eco-river in the days to come.关键词
生态修复/生态治理/综合整治/南川河/西宁Key words
eco-restoration/eco-improvement/comprehensive improvement/Nanchuanhe River/Xining分类
建筑与水利
