在<西部畅想>中为什么要提到黄河、长江、雅鲁藏布江、昆仑山、祁连山、喜马拉雅山?

它们都是西部具有代表性的东西。黄河，长江，雅鲁藏布江都发源于西部。昆仑山，祁连山，喜马拉雅山都在西部。

黄河、长江、雅鲁藏布江的源头都是在西部，而这些都是中国的主要水源
昆仑山、祁连山、喜马拉雅山是中国比较有名的山川

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离得近