Evaluation of service function value of Maqu alpine wetland ecosystem in the First Meander of the Yellow River

This paper combined experiments with investigates, synthetically utilized methods such as market value law, substitution expense law and shadow project law, made the quota evaluation of the service function value of Maqu alpine wetland ecosystem in the first meander of the Yellow River, to provide basis for local economic development and scientifically and reasonably protection and utilization of the wetland resources from 11 kinds of service function aspects. The result indicated that the total value of Maqu alpine wetland ecology service function reached 159.42108 Yuan/a, it was 36.65 times of gross national product of this area. The hydrology adjustment function was 57.72108 Yuan/a, followed by water source supplies, cultural scientific research, nutrition circulation and storage and climate control function, which was 32.43108 Yuan/a, 12.50108 Yuan/a, 12.38108 Yuan/a and 11.37108 Yuan/a, respectively. The environment purification, physical production, biodiversity protection, soil formation and protection, atmospheric component adjustment function were 9.24108 Yuan/a, 8.48108 Yuan/a, 8.31108 Yuan/a, 5.67108 Yuan/a, and 1.09108 Yuan/a, respectively. The recreation function was the lowest with 0.23108 Yuan/a. This fully explained that the Maqu alpine wetland was the kidney of the plateau in west China, it was important water source supplies area and the flood storage area in the Yellow River upstream, it was green ecology barrier of the Yellow River upstream ecosystem, and it has important strategic position for ensuring the ecological security of middle and lower reaches area.