%0 Journal Article
%T Effects of tree species fine root decomposition on soil active organic carbon<br>不同温度条件下杉木、桤木和火力楠细根分解对土壤活性有机碳的影响
%A LIU Yan
%A WANG Si-long
%A WANG Xiao-wei
%A YU Xiao-jun
%A YANG Yue-jun
%A <br>刘艳
%A 汪思龙
%A 王晓伟
%A 于小军
%A 杨跃军
%J 应用生态学报
%D 2007
%I 
%X With incubation test, this paper studied the effects of fine root decomposition of Alnus cremastogyne, Cunninghamia lanceolata and Michelia macclurei on the content of soil active organic carbon at 9 degrees C , 14 degrees C , 24 degrees C and 28 degrees C. The results showed that the decomposition rate of fine root differed significantly with test tree species, which was decreased in the order of M. macclurei > A. cremastogyne > C. lanceolata. The decomposition rate was increased with increasing temperature, but declined with prolonged incubation time. Fine root source, incubation temperature, and incubation time all affected the contents of soil microbial biomass carbon and water-soluble organic carbon. The decomposition of fine root increased soil microbial biomass carbon and water-soluble organic carbon significantly, and the effect decreased in the order of M. macclurei > A. cremastogyne > C. lanceolata. Higher contents of soil microbial biomass carbon and water-soluble organic carbon were observed at medium temperature and middle incubation stage. Fine root decomposition had less effect on the content of soil readily oxidized organic carbon.
%K fine root
%K decomposition
%K microbial biomass carbon
%K water-soluble organic carbon
%K readily oxidized organic carbon<br>细根
%K 分解
%K 微生物碳
%K 水溶性有机碳
%K 易氧化有机碳
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=DF588CF5BB32C0ED&yid=A732AF04DDA03BB3&vid=13553B2D12F347E8&iid=38B194292C032A66&sid=283B38DAD0D068F3&eid=8C8D895E58E44DBB&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=1&reference_num=25