水资源保护Issue(6)：36-40,5.DOI:10.3969/j.issn.1004-6933.2013.06.007
走马塘拓浚工程的生态效应
Ecological effect of dredging engineering in Zoumatang River
摘要
Abstract
According to the changes of the topography before and after the dredging in the Zoumatang River, a two-dimensional hydrodynamic model of the river was built to simulate hydrodynamic changes before and after the dredging in typical river sections. The impact of the dredging on hydrodynamic characteristics and the ecological effect of the dredging engineering were analyzed. The results show that, after the dredging, the velocity distributions of the whole area and typical cross-sections became uniform, which had a positive effect on the water quality and aquatic environment. The dredging was conducive to phytoplankton growth within a short period, but it inhibited the growth of zooplankton. According to the long-term trend analysis, the dredging will be conducive to the restoration and reconstruction of aquatic habitat. The dredging can also improve the sediment quality and reduce sediment contaminants and endogenous release. It has a positive effect on water quality improvement and a significant impact on the benthic habitat over a short time, but, as time goes by, the benthic habitat will be reconstructed.关键词
河道整治/拓浚工程/生态效应/二维水动力数学模型/走马塘Key words
river regulation/dredging engineering/ecological effect/two-dimensional hydrodynamic model Zoumatang River分类
资源环境引用本文复制引用
孙明园,韩龙喜,樊陆欢..走马塘拓浚工程的生态效应[J].水资源保护,2013,(6):36-40,5.基金项目
水利部公益性行业专项(201001028) （201001028）
