Dynamic Of Ecosystem Services Of Momoge Nature Reserve And Its Drivers Of Change

At present the time scales characteristic of ecosystem services assessment at home and abroad is make the evaluation results only briefly and weakened its management guidance for the future wetland. This article selected Momoge Wetland National Nature Reserve in the west of Jilin province as the research area, took bearing capacity of the habitat of Siberian crane (Grus leucogeranus), storage capacity and carbon assimilation as three indexes of main ecosystem services,2002,2008and2013as the research year for dynamic evaluation and reflect the interannual change of the main ecosystem services of Momoge wetland. This study was based on the data of local soil, vegetation, hydrology and Siberian crane distribution, combined with the organic carbon content and water holding capacity of soils to analysis, quantitative calculated the main ecosystem services by formula of Neu method, heat quantity method, flood storage and carbon sequestration. As a result, habitat carrying capacity of Siberian crane in2002,2008and2013was28400,2468and4904, food capacity of Siberian crane in these years was2.4×105,2.1×104and4.3×104, water’s storage capacity in these years was1.2×109,1.1×109and8.6×108m3, the soil storage capacity in2008and2013was2.57×1010m3and1.3×109m3, the total quantity of carbon assimilation of plants in these years was3×105,1.7×105and2×105t, the quantity of carbon assimilation of soil in2013was4.5×104t. The results showed that the main ecosystem services of Momoge wetland in2002-2008gradually weakened with the wetland degradation, the picking up of the index numbers of main ecosystem services in2008-2013illustrated this trend is gradually weakened because of the properly protection in recent years, Momoge wetland’s ecosystem services is gradually restored. The paper analyzed of driving force from natural factors and human interference according to the variation trend of the result of dynamic evaluation of ecosystem services of Momoge Wetland, and puts forward the countermeasures of wetland conservation and management.