长荡湖水生植被修复地形重塑方案研究  

Study on topographic reconstruction of aquatic vegetation restoration in Changdang Lake

作　　者：张怡辉 胡维平[1] 魏庆菲 朱金格[1] 彭兆亮 ZHANG Yihui;HU Weiping;WEI Qingfei;ZHU Jinge;PENG Zhaoliang(State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China;Nanjing Guohuan Science and Technology Co.,Ltd,Nanjing 210008,China)

机构地区：[1]中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室,江苏南京210008 [2]南京国环科技股份有限公司,江苏南京210008

出　　处：《人民长江》2020年第10期73-79,共7页Yangtze River

基　　金：国家自然科学基金重点项目(41431176);中国科学院南京地理与湖泊研究所“一三五”突破项目资助项目(NIGLAS2018GH02);江苏省水利科技项目(2020066)。

摘　　要：针对常州市长荡湖水浅、浪大、底泥易悬浮,不利于水生植被生长与恢复的问题,开展了长荡湖地形重塑方案研究。SWAN风浪模型计算结果显示,在长荡湖西部入湖河口外约1 km位置布置高程为3.00 m生态潜堤,潜堤区域有效波高和波长削减比例超过16%,潜堤掩护区有效波高削减约9%,波长削减约12%。水源地保护区外围布置3.26 m高程生态潜堤,潜堤区有效波高削减比例超过44%,波长削减比例超过31%,潜堤掩护区平均削减风浪约6%~8%。湖心区域可通过布置围网、生态网等方式削减风浪。该地形重塑方案可削减风浪强度,降低风浪扰动,提高局部范围内水体透明度及其水生植被修复的成功率。In view of the problems of shallow water,large waves and easy suspension of sediment in Changdang Lake,which is not conducive to the growth and restoration of aquatic vegetation,the study on the best scheme of topographic reconstruction in Changdang Lake was carried out.According to the calculation results by SWAN wind wave model,when an ecological dyke with an elevation of 3.00 m was placed at the position about 1 km outside the entering estuary at the west of Changdang Lake,the reduction ratio of wave height and average wave length were more than 16%in adjacent area of ecological dyke and the reduction ratio of wave height and average wave length were about 9%and 12%respectively in the shelter area behind ecological dyke.When an ecological dyke of 3.26 m height was arranged at the periphery of the water source protection area,the reduction ratio of wave height and average wavelength were more than 44%and 31%respectively in the adjacent area of ecological dyke and the wind wave were reduced by about 6%~8%in the shelter area behind ecological dyke.In the center of the lake,wind wave could be reduced by arranging seine and ecological nets.After the topographic reconstruction of Changdang Lake,the intense and disturbance of wind wave could be reduced and the water transparency in local areas could be improved,and eventually the success rate of aquatic vegetation restoration in Changdang Lake could be improved.

关 键 词：地形重塑 植被修复 生态潜堤 SWAN风浪模型 长荡湖 

分 类 号：P343.3[天文地球—水文科学]