以赛罕乌拉森林生态系统定位研究站为研究区域,基于实地调查和观测,依据《森林生态系统服务功能评估规范》(LY/T 1721-2008)构建评价指标体系,对大兴安岭南段不同龄组白桦天然次生林生态系统服务价值量进行了评估。结果表明:2012年大兴安岭南段白桦天然次生林涵养水源、保育土壤、固碳释氧、营养物质积累、净化大气环境及生物多样性保护生态系统服务总价值为9.72亿元/a,其中保育土壤功能价值量最高。大兴安岭南段白桦天然林生态系统服务价值空间分布状态为:近熟林＞中龄林＞幼龄林＞成熟林＞过熟林。区分不同龄组对大兴安岭南段白桦天然次生林生态系统服务功能价值进行评估核算,对该区域单一树种森林生态系统服务功能研究是个有益的尝试。

With the Saihanwula Forest Ecosystem Research Station location as the study area and on the basis of the field survey and observation and the “forest ecosystem service function evaluation standards”the evaluation index system was developed. Evaluation on the values of the Betula platyphylla forest ecosystem services of different ages in Saihanwula was carried out.The results show that in 2012,the Betula platyphylla forest water conservation,soil conservation,carbon sequestration and oxygen emancipation,accumulation of nutrients,air environment purification and biodiversity conservation of ecosystem service produce a value at 9.72×10⁸ yuan/a.The highest value is soil conservation function.The space distribution state of southern Daxinganling Betula platyphylla natural forest ecosystem service value was as follows:near mature forest >mid-mature forest> young growth> mature forest> overmature forest.Evaluation of the ecosystem service values of the Betula platyphylla forest of different age groups will benefit the research of forest ecosystem service function of a single tree species in southern Daxinganling.