基于MODIS遥感影像的洞庭湖面积与水位关系研究  

Study on Relationship between Lake Area and Water Level of Dongting Lake Based on MODIS Images

作　　者：宋求明[1] 熊立华[1] 肖义[2] 陈旋[3] 刘良明[3] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,武汉430072 [2]湖南省洞庭湖水利工程管理局,长沙410007 [3]武汉大学遥感信息工程学院,武汉430072

出　　处：《节水灌溉》2011年第6期20-23,26,共5页Water Saving Irrigation

基　　金：湖南省水利厅科技项目(DGJ-KY-2010-006)资助

摘　　要：以湖南省洞庭湖区为研究对象,应用MODIS遥感数据计算出洞庭湖水面面积。结合洞庭湖地区水文站的水位数据,建立2003-2006年的洞庭湖面积~水位关系曲线,为洞庭湖地区的水面面积实时监测提供了技术支持。通过对各水文站点的比较分析,得出城陵矶、岳阳、鹿角站等靠近洞庭湖入江口的水文站点,其面积~水位曲线的拟合相关性较高。在2003-2006年间,依据城陵矶站每年的面积~水位关系曲线推算的洞庭湖面积随水位变化的规律不一致,存在波动。在一定的时间、水位限制条件下,水位相同时,由城陵矶站面积~水位关系曲线推算的洞庭湖面积有减小的趋势。In this paper,MODIS data is used to calculate the water surface areas of the Dongting Lake,which,together with the hydrological stations＇ water level data from 2003 to 2006,are then employed to derive the area-water level curves of the Dongting Lake.It is found that the fitted area-water level curves for three stations（Chenglinji,Yueyang,Lujiao stations） have the highest accuracy than those fitted curves for the other water level stations.From 2003 to 2006,the variation of the Dongting Lake area with the water level had been inconsistent,according to the derived relationships of the lake area to the water level at Chenglingji station for each year.Given the same water level,the Dongting Lake＇s area calculated by the derived relationship of the lake area to the water level at Chenglingji station tends to decrease.

关 键 词：MODIS 面积 水位 趋势拟合 洞庭湖 

分 类 号：TV213.4[水利工程—水文学及水资源]