甘肃省森林生态系统服务功能及其价值评估

在祁连山森林生态站长期定位观测数据以及甘肃省各林区2007-2009年调查数据的基础上,采用全国第七次森林资源清查甘肃省数据和国家权威机构公布的社会公共数据,利用国家林业局发布实施的森林生态系统服务功能评估规范(LY/T 1721-2008),评价了甘肃省"十一五"期间不同林分各优势树种生态系统服务功能的价值。结果表明:(1)甘肃省森林生态系统服务功能总价值为2163.86亿元.a-1,其中涵养水源价值为854.02亿元.a-1;保育土壤价值为378.51亿元.a-1;固碳释氧价值为529.83亿元.a-1;积累营养物质价值为46.94亿元.a-1;净化大气环境价值为119.36亿元.a-1;生物多样性保护价值为215.70亿元.a-1;森林防护价值为17.23亿元.a-1;森林游憩价值为2.31亿元.a-1。(2)不同树种提供的服务功能总价值顺序为灌木林>硬阔类>栎类>阔叶混>云杉>冷杉>经济林>杨树>桦木>软阔类>针阔混>华山松>油松>柏木>落叶松>针叶混>桐类>椴树类>铁杉。

Evaluation on forest ecosystem services value in Gansu province

Based on observational data from the long-term observation of forest ecosystem in the Qilian Mountains and survey data(2008-2009) of kinds of forest areas in Gansu Province,ecological services and value of dominant tree species from different forests in Gansu province were evaluated by using the seventh forest resources inventory data and public data from the authorities and refering to the specification for assessment of forest ecosystem services in China(LY/T 1721-2008) from State Forestry Administration,P.R.China.The results showed that:(1) The total value of forest ecosystem services was 216.386 billion yuan·a-1,services values of water storage,soil conservation,C fixation and O2 release,nutrients accumulation,environment purification,biodiversity conservation,and forest recreation were respectively 85.402 billion yuan·a-1,37.851 billion yuan·a-1,52.983 billion yuan·a-1,4.694 billion yuan·a-1,11.936 billion yuan·a-1,21.570 billion yuan·a-1,1.732 billion yuan·a-1,and 0.231 billion yuan·a-1.(2) The total value of services value provided by different tree species : shrub forest>Hard broadleaf> Quercus > Broadleaf mixed forest> Picea crassifolia Kom.> Economic forest> Populus> Abies fabri(Mast.) Craib >Betula > needle Mixed forest> Soft broadleaf forest > Pinus armandii Franch.> Pinus tabulaeformis Carr.> Cupressus funebris Endl.> Larix gmelinii(Ruprecht) Kuzeneva > coniferous mixed forest > Scrophulariaceae> Tilia tuan Szyszyl.>Tsuga chinensis(Franch.) Pritz.