Responses of soil respiration to nitrogen addition in the Sanjiang Plain wetland, northeastern China

doi:10.1371/journal.pone.0211456

	Responses of soil respiration to nitrogen addition in the Sanjiang Plain wetland, northeastern China
	Wang, Jianbo 1,4; Fu, Xiaoling 4; Zhang, Zhen 2; Li, Maihe 2,3; Cao, Hongjie 4; Zhou, Xiaoliang 5; Ni, Hongwei 4
刊名	PLOS ONE
	2019-01-31
卷号	14 期号:1 页码:12
ISSN号	1932-6203
DOI	10.1371/journal.pone.0211456
英文摘要	This study was designed to test the hypothesis that nitrogen (N) addition leads to enhanced soil respiration (SR) in nitrogen deficient marsh. Here, we report the response of SR to simulated N deposition in a temperate marsh of northeastern China from June 2009 to September 2011. The experiment included three-levels of N treatment (control: no N addition, Low-N: 4g N m(-2) y(-1), and High-N: 8 g N m(-2) y(-1)). Our study showed various responses of SR to level and duration of N addition. Yearly SR was increased by 11.8%-15.2% (P<0.05) under Low-N addition during the three years, while SR showed a strong increase by 27.5% (P<0.05) in the first year and then decreased by 4.4% (P>0.05) and 15.4% (P<0.05) in the next two years under High-N addition. Soil respiration was positively correlated with soil temperature and negatively correlated with soil water content. High-N treatment reduced soil pH value (P<0.05). The negative response of SR to High-N addition in the following two years may attribute to lower microbial activity, microbial biomass and alteration in the microbial community due to lower soil pH, which consequently leads to decreased SR. Meanwhile, we found root biomass were increased under High-N addition. This implies that the increase of autotrophic respiration was lower than the decline of heterotrophic respiration in the following two years. Our findings suggest complex interactions between N deposition and SR, which is needed to be further investigated in the future studies.
资助项目	National Natural Science Foundation of China[31570485] ; National Natural Science Foundation of China[31170462] ; National Natural Science Foundation of China[31700424] ; National Key R&D Program of China[2016YFC0500405-02] ; Special Research of Heilongjiang[ZNJZ2017ZR01]
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	PUBLIC LIBRARY SCIENCE
WOS记录号	WOS:000457301600046
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/123907]
专题	中国科学院沈阳应用生态研究所
通讯作者	Ni, Hongwei
作者单位	1.Northeast Forestry Univ, Harbin, Heilongjiang, Peoples R China 2.Swiss Fed Res Inst WSL, Birmensdorf, Switzerland 3.Chinese Acad Sci, Inst Appl Ecol, Shenyang, Jilin, Peoples R China 4.Heilongjiang Acad Sci, Inst Nat Resources & Ecol, Harbin, Heilongjiang, Peoples R China 5.Honghe Natl Nat Reserve, Jiansanjiang, Heilongjiang, Peoples R China
推荐引用方式 GB/T 7714	Wang, Jianbo,Fu, Xiaoling,Zhang, Zhen,et al. Responses of soil respiration to nitrogen addition in the Sanjiang Plain wetland, northeastern China[J]. PLOS ONE,2019,14(1):12.
APA	Wang, Jianbo.,Fu, Xiaoling.,Zhang, Zhen.,Li, Maihe.,Cao, Hongjie.,...&Ni, Hongwei.(2019).Responses of soil respiration to nitrogen addition in the Sanjiang Plain wetland, northeastern China.PLOS ONE,14(1),12.
MLA	Wang, Jianbo,et al."Responses of soil respiration to nitrogen addition in the Sanjiang Plain wetland, northeastern China".PLOS ONE 14.1(2019):12.