摘要
根据内蒙古大兴安岭林区森林三次清查数据,利用林业行业标准《森林生态系统服务功能评估规范(LY/T1721─2008)》,对1994-2008年间大兴安岭森林涵养水源和保育土壤2项生态服务功能的物质量和价值量进行评估。结果表明:在近15年内,大兴安岭林区森林固土量>保肥量>涵养水源物质量,三者都呈不断增加的变化趋势,在第五次复查期均达到最大,在第五次复查期固土量是1 586.342×109t·a-1,保肥量是34.350×109t·a-1,涵养水源物质量为12.388×109t·a-1。保育土壤价值量均高于涵养水源价值量,二者都有不同程度的增加,在第五次复查期都达到最大,二者的和为561.608×109元·a-1。5种不同林龄森林单位面积涵养水源和保育土壤总价值表现不同,具体而言是中龄林>近熟林>过熟林>成熟林>幼龄林。
Based on the three times forest inventory data of forests resources in Daxinganling Mountains in Inner Mongolia, by using forestry industry standards ＂Specifications for Assessment of Forest Eco-system Services in China （LY/T 1721-2008）＂ , the total substance quantity and total value of two ecological service functions （water conservation and soil conservation） of Daxinganling forests from 1994 to 2008 were evaluated. The results show that the substance quantities produced by Daxinganling Mountains forests consisted of three aspects, their order from big to small was soil fixation amount, fertility maintenance amount and water conservation amount, all three showed growing trends, and their values reached the maximum at the fifth forests re-examination, the maximum soil fixation amount was 1 586.342×10^9t.a-1, maximum fertility maintenance 34.350 ×10^9t.a-1, maximum water conservation 12.388 ×10^9t.a-1; the soil conservation value quantity was higher than that of water conservation, both had different degrees of increase, and both reached the maximum at the fifth forests re-examination, the sum of the two maximum was 561.608 × 10^9 yuan.a^-1; The total values of water conservation and soil conservation with five different tree-age per unit forest area appeared different performances, theirs total value quantities ranked by magnitude as following： middle-aged forest 〉 near mature forest 〉 mature forest 〉 over mature forest 〉 young forest.
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2013年第12期91-95,共5页
Journal of Central South University of Forestry & Technology
基金
国家自然科学基金(31160106)
中国科学院战略性先导科技专项(XDA05050201-04-02)
内蒙古农业大学博士科研启动基金(BJ08-26)联合资助
关键词
森林涵养水源
森林保育土壤
内蒙古
大兴安岭森林
评估
forest water conservation
forest soil conservation
Inner Mongolia
Daxinganling forest
assessment
