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Interspecific plant competition increases soil labile organic carbon and nitrogen contents

文献类型：期刊论文

作者Wang, Miaoying1; Yang, Jing1; Gao, Hailun1; Xu, Wenshi1; Dong, Mingqiu1; Shen, Guochun1; Xu, Juan1; Xu, Xingliang2; Xue, Jianming3; Xu, Cheng-Yuan4
刊名FOREST ECOLOGY AND MANAGEMENT
出版日期2020-04-15
卷号462页码:10
ISSN号0378-1127
关键词Tree species Interspecific competition intensity Extractable organic C Extractable organic N Soil C mineralization rates Soil N mineralization rates
DOI10.1016/j.foreco.2020.117991
通讯作者Zhou, Xiaoqi(xqzhou@des.ecnu.edu.cn)
英文摘要Plant competition can impose species-specific effects on the dynamics of soil carbon (C) and nitrogen (N) through rhizosphere processes and litter input. Therefore, it is crucial to quantify these effects in various terrestrial ecosystems for a better understanding of the mechanisms. Here, we collected subsoils containing low N from a subtropical forest and planted eight dominant tree species (two deciduous and six evergreens) in these soils in a greenhouse to explore the effects of interspecific plant competition on plant growth, soil C and N contents, and soil C and N mineralization rates after the plants had grown for 12 months. Soil labile organic C and N contents were represented by soil extractable organic C (EOC) and extractable organic N (EON) contents. We assessed the magnitude of the interspecific plant competition via the relative interaction intensity (RII) index, which was calculated from the biomass of seedlings in the mixed treatments compared with the single treatments. Our results showed that interspecific plant competition had species-specific effects on plant biomass and soil total C and N contents as well as soil C mineralization rates, whereas it tended to decrease soil N mineralization rates. However, interspecific plant competition significantly decreased plant C and N contents, and significantly increased soil EOC and EON contents with increasing RII. After classifying the communities into two functional types (i.e., deciduous-evergreen versus evergreen-evergreen), similar relationships were observed. These findings address the importance of quantifying interspecific plant competition on soil labile organic C and N contents, which is helpful for understanding soil C and N cycling in forest ecosystems.
WOS关键词SUBTROPICAL EVERGREEN ; DECIDUOUS TREES ; N CONTENTS ; DIVERSITY ; NEIGHBORS ; DYNAMICS ; BIOMASS ; GROWTH ; FOREST ; RATES
资助项目National Natural Science Foundation of China[31870497] ; National Natural Science Foundation of China[31600406] ; Shanghai Science and Technology Innovation Fund[18391902300] ; Fundamental Research Funds for the Central Universities ; ECNU Multifunctional Platform for Innovation[008]
WOS研究方向Forestry
语种英语
出版者ELSEVIER
WOS记录号WOS:000528189800023
资助机构National Natural Science Foundation of China ; Shanghai Science and Technology Innovation Fund ; Fundamental Research Funds for the Central Universities ; ECNU Multifunctional Platform for Innovation
源URL[http://ir.igsnrr.ac.cn/handle/311030/159886]  
专题中国科学院地理科学与资源研究所
通讯作者Zhou, Xiaoqi
作者单位1.East China Normal Univ, Ctr Global Change & Ecol Forecasting, Sch Ecol & Environm Sci, Zhejiang Tiantong Forest Ecosyst Natl Observat &, Shanghai 200241, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
3.Scion, POB 29237, Christchurch 8440, New Zealand
4.Cent Queensland Univ, Sch Med & Appl Sci, Bundaberg, Qld 4760, Australia
推荐引用方式
GB/T 7714		 Wang, Miaoying,Yang, Jing,Gao, Hailun,et al. Interspecific plant competition increases soil labile organic carbon and nitrogen contents[J]. FOREST ECOLOGY AND MANAGEMENT,2020,462:10.
APA Wang, Miaoying.,Yang, Jing.,Gao, Hailun.,Xu, Wenshi.,Dong, Mingqiu.,...&Zhou, Xiaoqi.(2020).Interspecific plant competition increases soil labile organic carbon and nitrogen contents.FOREST ECOLOGY AND MANAGEMENT,462,10.
MLA Wang, Miaoying,et al."Interspecific plant competition increases soil labile organic carbon and nitrogen contents".FOREST ECOLOGY AND MANAGEMENT 462(2020):10.

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来源：地理科学与资源研究所

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