应用遥感方法研究黄河三角洲地表蒸发及其与下垫面关系  

A study of evaporation and its relationship with the surface parameters using remote sensing data in the Yellow River Delta (YRD)

作　　者：崔亚莉[1] 徐映雪[2] 邵景力[2] 张长春[3] 

机构地区：[1]中国矿业大学力学与建筑工程学院,北京100083 [2]中国地质大学水资源与环境学院,北京100083 [3]清华大学水利系,北京100084

出　　处：《地学前缘》2005年第U04期159-165,共7页Earth Science Frontiers

基　　金：国家自然科学基金项目(40272105);国家重点基础研究发展规划项目(G1999043606)

摘　　要：文中主要应用遥感方法计算了黄河三角洲地表蒸发量及其地表特征参数。地表特征参数及其合理组合揭示出黄河三角洲下垫面的基本特征：农田植被指数和天然植被的植被指数有不同的变化规律，下垫面覆盖度低，裸地较多，地表较湿润，蒸发量较大。蒸发量时空分布主要受下垫面条件控制，滨海裸地和受人类活动影响较大的农田等地蒸发量较大，年际平均蒸发量在570～860mm之间。In this paper we estimate the evaporation rate in the Yellow River Delta (YRD) and analyze its relationship with surface parameters using remote sensing data. The surface parameters and their intergration can provide more information about the ground condition. The basic characteristics of the YRD ground are that the regular pattern of the change of natural vegetation NDVI (Normalized Difference Vegetation Index) is distinguished from that of the farm NDVI; that the cover-degree is low; that the area of bare soil is large; that the surface is wetter; and that the amount of evaporation is large. The average annual evaporation varied between 570 mm and 860 mm, and the surface characteristics mainly controlled the temporal and spatial distribution of evaporation in the YRD.

关 键 词：遥感 蒸发量 地表特征参数 黄河三角洲 

分 类 号：P332.2[天文地球—水文科学] P407.8[水利工程—水文学及水资源]