风浪侵蚀导致湖岸崩塌和岸线后退,造成沿岸财产和土地资源损失,目前生态护岸已经成为一种趋势。香根草因其发达的根系、卓越的植物力学特性和强大的抗逆性,特别适合湖泊防浪护岸。为了研究香根草在湖泊护岸工程中的效果,结合监利县东港湖崩岸防治,介绍了湖岸香根草的种植方案和种植技术,采用水岸侧侵蚀模型计算了裸土湖岸和香根草生长湖岸在风浪作用下的侵蚀速率。结果表明,种植香根草可使湖岸的侵蚀速率减小90%以上。相对传统的刚性护岸,香根草护岸更加节省工程费用、更为环境友好。
Abstract
Lakeshore slumping and recession resulting from wave erosion usually causes heavy loss of waterfront property and land resources. Ecological revetment has become the new trend of lakeshore erosion control. In this paper, vetiver is adopted to protect lakeshore against wave attack because of its well-developed root system, phytomechanical properties and adaptability to adverse environment. With the shore-protection works of Donggang Lake as a case study, the patterns and techniques of planting vetiver are introduced. Furthermore, the erosion rates of bare soil lakeshore and vetiver lakeshore were computed and compared using lateral erosion model. Results show that vetiver planting on lakeshore could reduce the shore erosion rate by over 90%. Compared with rigid revetment, ecological revetment is more economic and more environmentally friendly.
关键词
湖岸侵蚀 /
风浪 /
生态护岸 /
香根草 /
侧向侵蚀模型
Key words
lakeshore erosion /
wave /
ecological revetment /
vetiver /
lateral erosion model
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参考文献
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基金
中央高校基本科研业务费专项资金项目(2042016kf1070)
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