In Yuanmou dry-hot valley, the Climate is hot and dry, the vegetation is sparse and the ecological environment is fragile.
元谋干热河谷区气候炎热干燥，植被稀疏，生态环境脆弱。
There is grievous ecosystem degradation in Yuanmou Dry-hot Valley. Thepercentage of severe degraded and the extremely severe degraded area account for 46.7% of the whole Dry-hot Valley area.
元谋干热河谷生态系统退化严重，其中强度退化和极强度退化面积占到了元谋干热河谷区总面积的46.7％。
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。
The water physiological characteristics of 9 planting species in Yuanmou dry and hot valley areas were observed from 1993 to 1998.
1993～1998年对元谋干热河谷区的9个造林树种的水分生理特性进行了观测。
The water physiological characteristics of 9 planting species in Yuanmou dry and hot valley areas were observed from 1993 to 1998.
1993～1998年对元谋干热河谷区的9个造林树种的水分生理特性进行了观测。
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