It provides a theoretical basis on dry valley area to promote vegetation gradually from top to bottom, to improve the effectiveness of vegetation.
这为干旱河谷区的植被恢复从上至下逐渐推进,提高植被恢复成效提供了理论依据。
参考来源 - 岷江上游山地森林/干旱河谷交错带不同植被类型土壤微生物及土壤酶活性的研究Due to the bad vulnerability of dry valley which has root in its own special geological,climatic and vegetation feature and serious anthropogenic disturbances,the ecosystem is severely degrading in the dry valley.
特殊的地质地貌、气候和植被等特征导致了干早河谷本身具有高度的脆弱性,在高强度人为干扰体的叠加作用下退化严重。
参考来源 - 岷江干旱河谷整地造林植被恢复的长期效果评价·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
N a valley originally produced by running water but now waterless 枯谷
The principal karst features are the karst hills, dry valley, the grike and so on.
主要岩溶形态有岩溶丘陵、干谷、岩溶沟等。
The results showed that shrub land was the landscape radix of the dry valley.
结果表明：灌木林地是干旱河谷的景观基质；
Hot-dry valley of Jinsha River is one of the typical serious degradation areas.
金沙江干热河谷是典型严重退化区域之一。
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