国外河流渠道化生态环境影响实例研究

hannelization project， which is to transform natural rivers to regular channels with two parallel sides by some technique measures, change the natural form of the river and lead to the reduction of environmental heterogeneity. In such a state of affairs, the biodiversity go down and ecological environment go bad. Through the analysis of foreign examples, it is known that river channelization should follow a guiding principle. It cannot cut off the connection of the channel and the floodplain, and ignore the aggravation of the ecological environment, but combine ecological measures and engineering measures to build a harmonious ecological environment.