一、干热河谷的气候特点 云南的干热河谷气候,受大气环流尤其是地形因素的影响较大。就环流因子而言,各流域所受影响大体相似,从而形成相似的气候特点:干湿季非常分明,干季湿度小、云量少、晴天多、日间气温高、昼夜温差大;湿季水汽多、云量多、阴天多、日间气温不高、昼夜温 First, the climate characteristics of hot and dry valleys Yunnan dry hot valley climate, by the atmospheric circulation, especially terrain factors. In terms of circulation factor, the impacts of different basins are similar, which leads to similar climate characteristics: the wet and dry season is very distinct, the humidity in dry season is small, the amount of cloud is less, the sunny days are more, the temperatures are higher during the day and the temperature difference between day and night is bigger; More water vapor, cloudiness, cloudy, daytime temperatures are not high, day and night temperature