hot and dry valley

The representative area of dry and hot valley of Jinsha River in Yunnan Province has a temperature condition of the northern tropical zone and a long dry season of more than half a year.

云南金沙江干热河谷典型区具有北热带温度条件和长达半年以上的干季时间，生态系统具有破坏容易恢复难的特点。

The dry and hot valley of Jingsha River is one of fragile ecological environment areas in China, where the soil degradation was very serious.

金沙江干热河谷地区是我国生态环境脆弱地区之一，土壤退化十分严重。

Drought and water shortage is the main restrictive factor to heighten grain output of dry slope land and the afforestation survival rate in Yuanmou dry hot valley.

干旱缺水是提高干热河谷旱坡地粮食产量和提高植树造林成活率的主要制约因素。