玛曲县是黄河上游地区的主要水源涵养地，草地生态系统服务价值巨大。
Maqu County is the the main water conservation region in the Upper Yellow River and with great value of grassland ecosystem services.
流域草地和林地具有消减洪峰，涵养水源的功能。
Grassland and forest of watershed can drop down the flood peak and achieve self-restraint of the water.
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