Precipitation variability drives the reduction of total soil respiration and heterotrophic respiration in response to nitrogen addition in a temperate forest plantation

doi:10.1007/s00374-019-01417-z

	Precipitation variability drives the reduction of total soil respiration and heterotrophic respiration in response to nitrogen addition in a temperate forest plantation
	Song, Huanhuan 2; Yan, Tao 2,3; Wang, Jinsong 1; Sun, Zhenzhong 3
刊名	BIOLOGY AND FERTILITY OF SOILS
	2019-11-22
页码	7
关键词	Heterotrophic respiration Autotrophic respiration N fertilization Rainfall Drought Seasonally response
ISSN号	0178-2762
DOI	10.1007/s00374-019-01417-z
通讯作者	Yan, Tao(yant@lzu.edu.cn)
英文摘要	How precipitation mediates the responses of soil respiration (Rs) and its components, i.e., heterotrophic respiration (Rh) and autotrophic respiration (Ra), to N addition remains uncertain. In an 11-year-old temperate larch plantation in northern China, we investigated the responses of Rs, Rh, and Ra to three N-addition rates (i.e., control: no N addition; low N addition: 20 kg N ha(-1) year(-1); and high N addition: 50 kg N ha(-1) year(-1)) over a 6-year period that experienced high variability in precipitation. In the control plot, Rs and Rh during wet years were significantly higher than values in both normal (by 37% and 62%, respectively) and dry years (by 19% and 39%, respectively). These results indicated that increased precipitation may stimulate soil microbial biomass and activity which in turn increase Rh and thus Rs. Interestingly, Rs was not affected by N addition in normal or dry years, whereas it was negatively affected by N addition in wet years, primarily due to the decrease in Rh during the summer following N addition. Furthermore, N addition significantly increased Ra in the spring of wet years, because the N limitation was largely alleviated after N addition, and thus, roots might be more active due to higher soil water and N availability. Overall, our findings emphasize the importance of incorporating the mediating role of increased precipitation on soil C loss via respiratory processes and corresponding responses to N addition into models, with the goal of reducing uncertainty in the predictions of carbon-climate feedbacks.
资助项目	National Natural Science Foundation of China[41801056]
WOS关键词	CLIMATE-CHANGE ; CARBON ; WATER ; CO2 ; ECOSYSTEMS ; PULSES ; IMPACTS ; METAANALYSIS ; COMMUNITIES ; DEPOSITION
WOS研究方向	Agriculture
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000498011300001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/130285]
专题	中国科学院地理科学与资源研究所
通讯作者	Yan, Tao
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Lanzhou Univ, Engn Res Ctr Grassland Ind,Coll Pastoral Agr Sci, Key Lab Grassland Livestock Ind Innovat,Minist Ed, State Key Lab Grassland & Agroecosyst,Minist Agr, Lanzhou 730000, Gansu, Peoples R China 3.Peking Univ, Coll Urban & Environm Sci, Sino French Inst Earth Syst Sci, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Song, Huanhuan,Yan, Tao,Wang, Jinsong,et al. Precipitation variability drives the reduction of total soil respiration and heterotrophic respiration in response to nitrogen addition in a temperate forest plantation[J]. BIOLOGY AND FERTILITY OF SOILS,2019:7.
APA	Song, Huanhuan,Yan, Tao,Wang, Jinsong,&Sun, Zhenzhong.(2019).Precipitation variability drives the reduction of total soil respiration and heterotrophic respiration in response to nitrogen addition in a temperate forest plantation.BIOLOGY AND FERTILITY OF SOILS,7.
MLA	Song, Huanhuan,et al."Precipitation variability drives the reduction of total soil respiration and heterotrophic respiration in response to nitrogen addition in a temperate forest plantation".BIOLOGY AND FERTILITY OF SOILS (2019):7.