%0 Journal Article
%T Influential factors and distribution characteristics of topsoil labile organic carbon<br>高寒草原生态系统表层土壤活性有机碳分布特征及其影响因素——以贡嘎南山-拉轨岗日山为例
%A WANG Jian-Lin
%A OUYANG Hua
%A WANG Zhong-Hong
%A CHANG Tian-Jun
%A LI Peng
%A SHEN Zhen-Xi
%A ZHONG Zhi-Ming
%A <br>王建林
%A 欧阳华
%A 王忠红
%A 常天军
%A 李鹏
%A 沈振西
%A 钟志明
%J 生态学报
%D 2009
%I 
%X The distribution characteristics of the topsoil (0-20cm) labile organic carbon of alpine grassland ecosystem at the south slope of Gongga south mountain-Laguigangri mountain were studied. The results showed that, the average content of the topsoil (0-20cm) labile organic carbon was (2.4986±0.7864) g/kg, accounting for (12.7926±21.00)% of the topsoil organic carbon in alpine grassland ecosystem at the south slope of Gongga south mountain-Laguigangri mountain. With increasing altitude, the distribution characteristics of the topsoil (0-20cm) labile organic carbon and organic carbon lability were decrease→increase within the altitude range of 4424-4804m. The key environmental factors influencing the content of topsoil labile organic carbon were overground biomass, biomass of underground 0-10cm and 30-40cm, moisture of underground 20-30cm, soil bulk density of underground 0-20cm and 20-40cm, and soil total Nitrogen content. However, the key environmental factors for the topsoil (0-20cm) organic carbon lability were vegetation coverage, 20-30cm belowground biomass, 0-10cm,10-20cm and 20-30cm underground soil moisture, soil organic matter, soil labile Potassium and soil total Nitrogen content.
%K alpine grassland ecosystem
%K labile organic carbon
%K distribution characteristics
%K influential factors<br>高寒草原生态系统
%K 活性有机碳
%K 分布特征
%K 影响因素
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=EE5A2C973428526791CCC40A248E29C2&yid=DE12191FBD62783C&vid=771469D9D58C34FF&iid=DF92D298D3FF1E6E&sid=2D0C5F640CFB0E59&eid=E0322A8ACAE9818B&journal_id=1000-0933&journal_name=生态学报&referenced_num=2&reference_num=58