Alpine valleys are mainly distributed in the southeastern part, while its northwestern land is plateau region.

高山峡谷主要分布在阿坝的东南部, 而它的西北部主要是高原地形.

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Water was a crucial factor influencing vegetation restoration and eco - environmental reconstruction in Loess Plateau region.

水分是制约黄土区植被恢复与生态环境重建的决定性因子.

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