[西藏风光]雅鲁藏布江河谷-20p
[西藏风光]雅鲁藏布江河谷-20p雅鲁藏布江干流依自然条件、河谷形态及其流程变化，可划分为河源区、上游、中游和下游。从杰马央宗冰川的末端至里孜为上游段，河长268公里，集水面积26570平方公里，河谷宽达1～10公里。马泉河穿行在南面的喜马拉雅山和北面的冈底斯山之间，谷地开阔，一般都有10～30公里。连绵的雪山、缎带、湖泊都铺在一块一望无际犹如翠绿绒毡的草地上。这幅美丽的图景，就是上游马泉河地区的写照。马泉河流域基本上都是牧区，在帕羊以下河谷两侧是由高蒿草组成的沼泽化草甸景观，这里是最优良的冬春牧场。马泉河谷地的上段，由于人烟稀少，目前的茫茫草地还是一个动物乐园，有藏羚羊、岩羊、野驴、野耗牛、熊、狼、狐狸、鼠、兔等多种动物。
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