长江三峡水库兴建后库周地区辐射平衡与地面径流变化之探讨  

A Discussion About the Changes of Radiation Balance and Surface Runoff in the Reservoir Area After the Three Gorge Project Being Built

作　　者：洪松[1] 葛磊 吴胜军[3] 李晓宇 

机构地区：[1]北京大学城市与环境学系,北京100871 [2]水利部长江水利委员会,湖北武汉430010 [3]湖北大学生态学研究所,湖北武汉430062

出　　处：《地理科学》1999年第5期428-431,共4页Scientia Geographica Sinica

基　　金：湖北省自然科学基金

摘　　要：从地球表面水量平衡、热量平衡两个基本方程出发，通过对其中一系列变量在三峡建库前后变化的分析，推导库周地区辐射平衡Ｒｇ、蒸发量Ｅ、年径流量ｆ 等重要水热因素将会发生的变化，从而可对整个库区环境的演变窥豹一斑。This thesis started from equations of discharge and heat balance on earth surface, and discussed changes of the whole hydrothermal condition in the reservoir area after the Three Gorge Project being built through analysis of a series of variables. The preliminary estimates show that the surface radiation balance in the area along the reservoir will have a increase of 4.2%-6.7%, namely 8.0-12.6×10 3J/cm 2·a, and the surface evaporation capality will also rise by 2.2%-3.9%,namely 12-21 mm/a. But the surface runoff in the reservoir area tend to descend about 8%-10%, mean 45-55 mm/a. In addition, the latent heat exchange and the turbulent heat exchange between earth surface and atmosphere will increase in different extents. The above mentioned conclusion has momentous significance to understand eco environmental evolution in reservoir area.

关 键 词：长江三峡 辐射平衡 地表面蒸发量 地面径流 

分 类 号：P422.4[天文地球—大气科学及气象学] P333.5[天文地球—水文科学]