贺兰山自然保护区森林生态系统服务功能价值评估

Evaluation of Forest Ecosystem Services of Helan Mountain Nature Reserve

对贺兰山自然保护区生态系统服务功能的直接价值和间接价值进行了评价。结果表明,贺兰山自然保护区森林生态系统服务功能价值3.66×108元·a-1,单位面积经济价值为1 649.4元·hm-2·a-1,其中直接价值2 457.3×104元·a-1,仅占服务功能总价值6.72%,而间接价值高达3.41×108元·a-1。生态服务价值相当于2011年石嘴山市GDP的1.0%,年银川市GDP的0.38%,两市平均每人每年可获得生态服务价值151.7元,各项服务功能价值由大到小依次为:涵养水源、土壤保持、净化空气、维持生物多样性、林木产品、生态旅游、固碳释氧,对维护区域可持续发展具有重要作用。

The direct value and the indirect value of ecosystem services of Helan Mountain Nature Re- serve were evaluated. The results showed that the total forest ecosystem services value of Helan Mountain Nature Reserve reaches 3. 66× 10^8 yuan· a^-1. The economic value of the unit area is 1649.4y. hm^-2 · a^-1, among which the direct value is 2457. 3×10^4 y· a^-1, accounting for only 6.72% of the total value of the service function, whereas the indirect value reaches as high as 3.41 × 10^8 y· a^-1. All types of the ecosystem services could be arranged in the order of value as： water con- servation, soil conservation, air purification, biodiversity conservation, product offers, ecological tourism,carbon sequestration and oxygen release. The value of ecosystem services of Helan Mountain Nature Reserve contribution could be equivalent to 1.0% of GDP of Shizuishan in 2011 and be equiva- lent to 0.38% of GDP of Yinchuan in 2011. For each local individual of two cities,the available ecosys- tem services value can reach 151.7 y · a^-1. The research results showed that the Helan Mountain Na- ture Reserve area possesses an irreplaceable important role in maintaining the regional sustainable de- velopment.