Investigation and Evaluation of Wetland Resources in the Huangshui River Valley in Qinghai Province

Based on remote sensing satellite monitoring,sample investigation and spot observation, the total area of wetlands in the Huangshui River in Qinghai province is about 91 168.34 hm²,and can be divided into 4 classes and 12 types. Wetland composition proportion decreasingly ranks as lake wetland,river wetland, swamp wetland and artificial wetland. Natural wetland resource has an area of 85 793.62 hm²,manual wetland resource has an area of 5 374.72 hm². The district of the maximum wetland area is in Haiyan county,and the minimum wetlands area is in Pingan county,