摘要
以湖南省洞庭湖地区为例,结合传统的湖区面积测算和基于MODIS遥感数据的面积测算,对洞庭湖面积变化进行了分析,并测算出最新的洞庭湖水位面积曲线。指出利用MODIS数据,具有更新快、效果好、低成本等特点。通过定量的分析方法,利用1995年和2002年洞庭湖的面积曲线,以1996年洪水为例,计算并分析了面积变化对洪水位的影响。指出"退田还湖"方针的实施,对于洞庭湖调蓄面积和调蓄量的增加、高洪水位的降低,发挥了一定的作用。
Taking the Dongting Lake region for example, changes in area of the lake were analyzed and the newest stage-water surface area curve of the lake was obtained in combination with conventional computation for lake area and on the basis of the area computation according to remote sensing data obtained from MODIS transducers. The utilization of MODIS data is characterized by quick renewal, good effect and low cost, etc. Through quantitative analysis, the 1995 and 2002 water surface curves of the Dongting Lake were used to compute and analyze the effect of the lake's area chang on the flood level for the 1996 flood.
出处
《人民长江》
北大核心
2004年第4期14-16,共3页
Yangtze River
基金
国家自然科学基金资助项目(50179026)
国家973前期基础研究资助项目
关键词
MODIS
面积变化
影响分析
洪水位
洞庭湖
moderate-resolution imaging spectroradiometer
area change
effect analysis
flood level
Dongting Lake
