内蒙古东乌旗草原生态系统水源涵养量与价值研究

Assessment of Grassland Ecosystem Water Conservation and Its Value in Dongwuqi,Inner Mongolia

草地是我国重要的自然资源之一,开展针对草地水源涵养功能及价值的研究,在当前具有非常紧迫而又现实的意义。结合内蒙古东乌旗草地生态系统实际情况,研究草地水源涵养量及价值核算方法,评估东乌旗草地水源涵养量及价值时空变化。结果表明,2000年、2005年、2010年全旗草地水源涵养量分别为1.88×10~9、7.63×10~8、2.01×10~9m^3,价值分别为1.35×10~5万元、5.47×10~4万元、1.44×10~5万元;2000—2005年,东乌旗草原水源涵养总价值下降59.48%,2005—2010年,全旗草地水源涵养总价值上升163.25%。

Grassland is one of the most important natural resources in China. Investigations on grassland water conservation and its value are urgently needed and are of realistic significance. In present study, combined with the practical situation of grassland ecosystem in Dongwuqi of Inner Mongolia, we studied the evaluation methods on grassland water conservation and its value and assessed their spatial-temporal variations. The results revealed that in this region, the grassland water conservation in the year of2000, 2005 and 2010 were 1.88 ×10~9, 7.63 ×10~8and 2.01 ×10~9m^3, respectively, and the their corresponding value were 1 350 million Yuan, 547 million Yuan and 1 440 million Yuan, respectively. During the period from 2000 to 2005, the total value of grassland water conservation in Dongwuqi reduced by 59.48%. However, during the period from 2005 to 2010, the grassland water conservation in this region increased by 163.25%.