Direct effects of litter decomposition on soil dissolved organic carbon and nitrogen in a tropical rainforest

被引：67
|
作者：
Zhou, Wen-Jun [1 ,2 ,3 ]
Sha, Li-Qing [1 ,2 ]
Schaefer, Douglas A. [1 ,2 ]
Zhang, Yi-Ping [1 ,2 ]
Song, Qing-Hai [1 ,2 ,3 ]
Tan, Zheng-Hong [1 ,2 ,3 ]
Deng, Yun [1 ,2 ]
Deng, Xiao-Bao [1 ,2 ]
Guan, Hui-Lin [4 ]
机构：
[1] Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Mengla 666303, Yunnan, Peoples R China
[2] Chinese Ecosyst Res Net, Xishuangbanna Stn Trop Rain Forest Ecosyst Studie, Mengla 666303, Yunnan, Peoples R China
[3] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
[4] Yunnan Normal Univ, Energy & Environm Sci Coll, Kunming 650092, Peoples R China
来源：
SOIL BIOLOGY & BIOCHEMISTRY | 2015年 / 81卷
关键词：
Dissolved organic carbon; Dissolved nitrogen; Litter decomposition; Limiting factor; Tropical rainforest; MICROBIAL BIOMASS; FOLIAR LITTER; MATTER; FLOOR; DEPOSITION;
D O I：
10.1016/j.soilbio.2014.11.019
中图分类号：
S15 [土壤学];
学科分类号：
0903 ; 090301 ;
摘要：
To clarify how litter decomposition processes affect soil dissolved organic carbon (DOC) and soil dissolved nitrogen (DN) dynamics, we conducted a field experiment on leaf litter and collected DOC and DN from the underlying soil in a tropical rainforest in Xishuangbanna, southwest China. Principal components analysis (PCA) showed the first PCA axis (corresponding to degraded litter quantity and quality) explained 61.3% and 71.2% of variation in DOC and DN concentrations, respectively. Stepwise linear regression analysis indicated that litter carbon mass controlled DOC and hemicellulose mass controlled DN concentrations. Litter decomposition was the predominant factor controlling surface-soil DOC and DN dynamics in this tropical rainforest. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：255 / 258
页数：4
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