...下垫面变化；洪水要素；调蓄作用 [gap=1229]keywords: hydrological simulation; alter condition of basin cushion; flood elements;the store and delay effect ...
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城区降雨径流过程主要受降雨过程和下垫面变化的影响。
The process of runoff in urban area is mainly influenced by rainfall process and underlying surfaces variation.
本文就是在前人研究的基础上，利用了3s技术，从空间角度分析了城市扩展导致下垫面变化，从而引起地下水补给量的减少。
This paper is based on the investigation of the fore people, makes use of 3s technologies, analyzes the bottom mat changed from the city expansion, which causes the fall of groundwater level.
其次，在具有年周期的太阳辐射、垫面温度及凝结加热的作用下，基本气流以年周期变化。
The basic current has the annual variation under the influences of solar radiation, earth's surface temperature and condensation heatings, all with an annual period.
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