摘要
洞庭湖洲滩湿地形成于河相冲积,湖相沉积和河湖相冲(沉)积过程为主;洲滩湿地的淤高建度随时间变化而下降;不同区域洲滩演变速度差异很大;随着海拔升高洲滩增高速度的增幅为东洞庭湖>西洞庭湖>南洞庭湖;不同河流影响的洲滩增高速度异同;不同河、湖、洲滩组合地貌,洲滩的增高速度随地势的变化规律不一样。
The Dongting Lake form by the river facies, and the main process is the lake facies alluviation and lake-river facies alleviation, The degradation of the wetland and the beach has decreased with the time. There was obvious difference in the speed of the involvement in different district. The speed of amplitude was： east Dongting Lake 〉 west Dongting Lake 〉 south Dongting Lake which increased with altitude gain. There is the different speed of degradation at increased altitude by different river effects and also with the different law of that impact the composition of the rivers, lakes and beaches.
出处
《湖南林业科技》
2005年第5期12-15,共4页
Hunan Forestry Science & Technology
关键词
洲滩湿地
形成规律
洞庭湖
wetland of beach
formation hw
the Dongting Lake
