监利东港湖崩岸生态防治措施研究

Studies on ecological approach for controlling bank collapse of Donggang Lake in Jianli

湖泊水质恶化和人类活动破坏湖岸植物系统,从而削弱了湖岸抵御风浪侵蚀的能力,在风浪的侵蚀作用下,湖岸逐渐崩塌后退,造成土地资源损失和湖岸建筑物损毁。本文提出沿湖岸种植香根草,利用香根草发达、强劲的根系加固湖岸土体,防治风浪对湖岸的侵蚀。理论计算和在东港湖的试点应用结果表明,香根草护岸可使风浪产生的湖岸侵蚀减少90%,而造价不到传统护岸措施的1/10,并且有多重生态效益。

Due to the worsening of water quality in Donggang Lake and damage of lakeshore botanical system caused by human activities, the capability of lakeshore against wave erosion has been degraded. Under the functioning of wave erosion, lakeshore has been back up that has resulted in a great loss of land and damage of structures. However, vetiver grass has deep and strong roots that can consolidate soil of lakeshore and prevent erosion of wave. According to theoretical calculation and its applicable results to the pilot project of Donggang Lake, the revetment formed by vetiver grass can reduce 90% of erosion, with only 1/10 cost of the traditional structural measures. It can also generate a great deal of ecological benefits.