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金沙江中下游,红河中上游及怒江中下游河谷是我省干热河谷的代表区,其中又尤以金沙江中下游河谷最为典型。气温高、日照强、雨量少、蒸发大是干热河谷的气候特点。河谷盆地中的年平均气温一般都在20℃以上,最热的元江坝年平均气温为23.8℃,极端最高气温可达42℃以上。河谷盆地的年日照时数普遍在两千小时以上。而年降雨量
Middle and lower reaches of the Jinsha River, the middle and lower reaches of the Red River and the Nu River valley is the representative area of dry and hot valleys, especially in the middle and lower reaches of the Jinsha River Valley is the most typical. High temperature, strong sunshine, less rainfall, evaporation is a hot and dry valley climate characteristics. The annual average temperature in the valley basin is generally above 20 ℃, the average temperature of the hottest Yuanjiang dam is 23.8 ℃, and the extreme maximum temperature can reach above 42 ℃. River valley basin annual sunshine hours generally more than two thousand hours. The annual rainfall