新疆平原荒漠林生态系统服务功能评估

Evaluation on the Service Function of Desert Forest Ecosystem in Xinjiang Plain

运用市场价值法、影子价格法对新疆荒漠林生态服务功能价值进行了评估,结果表明:新疆荒漠林生态系统每年产生7 265 003.34万元的服务功能价值。各生态服务功能中,防风固沙功能价值最高,占44.90%;固持水功能价值次之,占31.67%;生物多样性保育价值占10.44%;保育土壤功能价值占7.55%;固碳释氧功能占4.77%;净化大气环境和积累营养功能价值量较低,仅占0.32%。乔木林和灌木林生态服务功能价值量分别为141.75×10~8元 a^(-1)和921.82×10~8元 a^(-1)。从龄组来看,近熟林>成熟林>过熟林>中龄林>幼龄林;从不同盖度来分,低盖度>中盖度>高盖度。单位面积生态服务价值量,成熟林>近熟林>中龄林>幼龄林>过熟林;不同盖度看,依次为高盖度>低盖度>中盖度。

Using the market value method and shadow price method,the value of ecological service functions of desert forest in Xinjiang was evaluated.Result shows that the Xinjiang desert forest ecosystem produces a service value of726,500,334yuan per year.Among the various ecological service functions,the value of wind and sand fixation function is the highest(44.90%);the value of retained water function is second(31.67%);the value of biodiversity conservation(10.44%);the value of soil conservation function(7.55%);carbon fixation and oxygen release Function(4.77%);the value of purifying the atmospheric environment and accumulating nutrient function is low(0.32%).The value of ecological service functions of arbor forest and shrub forest were141.75×10^8yuan a-1and921.82×10^8yuan a^-1,respectively.From the age group,near-mature forest>mature forest>over-mature forest>half-mature forest>young forest;from different coverage,low coverage>middle coverage>high coverage.The value of ecological service per unit area,mature forest>near-mature forest>half-mature forest>young forest>over-mature forest;from different coverage,high coverage>low coverage>medium coverage.