中亚热带几种典型森林生态系统碳、氮储存功能研究  

Carbon and nitrogen storage under different forest ecosystems in mid-subtropical regions

作　　者：王华[1] 黄宇[2] 汪思龙[3] 邹冬生[1] 

机构地区：[1]湖南农业大学生物科学技术学院,长沙410128 [2]湖南省科技厅,长沙410013 [3]中国科学院沈阳应用生态研究所,沈阳110016

出　　处：《中国生态农业学报》2010年第3期576-580,共5页Chinese Journal of Eco-Agriculture

基　　金：中国科学院知识创新工程重要方向项目(KZCX2-YW-405);湖南省科技计划项目(2006NK3115;2007FJ3034;2008NK3102)资助

摘　　要：采用定位研究方法,从生态系统服务功能角度,对比研究了中亚热带区域7种典型森林生态系统碳、氮储存功能。结果表明,次生常绿阔叶林碳、氮储存功能最强,杉阔混交林碳、氮储存功能比同林龄的杉木纯林强,而第1代杉木纯林碳、氮储存功能强于连栽杉木纯林。生态系统碳、氮储存功能空间分布基本一致,土壤层是主要部分,其次为乔木层,然后是根系,林下植被层和凋落层所占比例最小。相关分析表明,土壤碳、氮储存功能与林下植被生物量、森林凋落物现存量之间都具有良好的线性关系,但与地下部分生物量相关性不明显。A comparative study on carbon （C） and nitrogen （N） storages under different typical forest ecosystems in mid-subtropical regions was conducted in 2006 via a localized method.The results show that C and N storages are highest under natural secondary evergreen broad-leaved forests.C and N storages in mixed broad-leaved and Chinese-fir forests are greater than in pure Chinese-fir forests.First rotation of pure Chinese-fir stands has higher C and N storages compared with successive pure Chinese-fir stands.Spatial distribution of C and N storages is basically consistent,and declines across the layers from soil,to tree,root,understory and to litter.Soil layer C and N storages are respectively positively related with understory and litter biomass,but not obvious related with stand belowground biomass.

关 键 词：中亚热带 森林生态系统 碳、氮储存功能 次生常绿阔叶林 杉阔混交林 杉木纯林 

分 类 号：Q948.1[生物学—植物学]