Responses of soil nitrous oxide flux to soil environmental factors in a subtropical coniferous plantation: A boundary line analysis

doi:10.1016/j.ejsobi.2018.02.002

CORC > 地理科学与资源研究所 > 中国科学院地理科学与资源研究所 > 生态系统研究网络观测与模拟重点实验室 > CERN水分分中心

	Responses of soil nitrous oxide flux to soil environmental factors in a subtropical coniferous plantation: A boundary line analysis
	Yu, Guangxia 1; Cheng, Shulan 1; Fang, Huajun 1,2,3; Tian, Jing 2; Xu, Meng 2; Yu, Guirui 2; He, Shun 1; Geng, Jing 2; Cao, Zicheng 1
刊名	EUROPEAN JOURNAL OF SOIL BIOLOGY
	2018-03-01
卷号	86 页码:16-25
关键词	Atmospheric N deposition Soil N2O flux Soil driving factors Boundary line approach Subtropical plantation forest
ISSN号	1164-5563
DOI	10.1016/j.ejsobi.2018.02.002
通讯作者	Cheng, Shulan(slcheng@ucas.ac.cn) ; Fang, Huajun(fanghj@igsnrr.ac.cn)
英文摘要	Soil N2O responds differently to various soil variables; moreover these driving variables usually have low explanatory capacity of soil N2O flux variability. Anthropogenic nitrogen (N) deposition inputs to the subtropical plantation forests markedly increase N2O emission from soils, but the relative contribution of deposited NH4+ and NO3- is not well understood. Based on a two-type (NH4Cl and NaNO3) and three-level (0, 40, 120 kg N ha(-1) yr(-1)) N addition experiment, we simultaneously determined soil N2O flux and related soil variables once a week in 2015. Boundary line analysis was used to describe the maximum responses of soil N2O fluxes to different soil variables. Four years of N addition led to significant accumulations of soil NH4+-N and NO3--N, thereby accelerating soil acidification. Nitrogen addition significantly increased soil N2O fluxes by 4.7-19.3 folds relative to control; moreover, the promotions to soil N2O emission and soil acidification were greater with ammonium-N addition than with nitrate-N addition. The relationships between the maximum soil N2O fluxes and individual soil variables were well fitted to the Gaussian equations, and the optimum values of soil temperature, moisture, pH, and NO3--N content indicate that nitrification dominated soil N2O production. Overall, our results suggest that exogenous NH4+ input to the subtropical plantation appears to have greater negative effects on soil acidification and N2O emission compared with NO3- input. Boundary line analysis well depicts the shape and magnitude of response functions of soil N2O fluxes against soil variables, which should be incorporated into terrestrial ecosystem process models.
资助项目	National Natural Science Foundation of China[31770558] ; National Natural Science Foundation of China[41471212] ; National Natural Science Foundation of China[31470558] ; National Key R&D Program of China[2017YFA0604804] ; National Key R&D Program of China[2017YFA0604802] ; National Key R&D Program of China[2016YFC0500603] ; National Key R&D Program of China[2016YFC0503603] ; Youth Innovation Research Team Project[LENOM2016Q0004]
WOS关键词	AMMONIA-OXIDIZING ARCHAEA ; FILLED PORE-SPACE ; N2O EMISSIONS ; FOREST SOILS ; NITRIC-OXIDE ; TERRESTRIAL ECOSYSTEMS ; PHOSPHORUS ADDITIONS ; AGRICULTURAL SOILS ; CARBON-DIOXIDE ; NORWAY SPRUCE
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
语种	英语
出版者	ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
WOS记录号	WOS:000436056400003
资助机构	National Natural Science Foundation of China ; National Key R&D Program of China ; Youth Innovation Research Team Project
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/54621]
专题	地理科学与资源研究所_生态系统研究网络观测与模拟重点实验室_CERN水分分中心
通讯作者	Cheng, Shulan; Fang, Huajun
作者单位	1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.11A Datun Rd, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Yu, Guangxia,Cheng, Shulan,Fang, Huajun,et al. Responses of soil nitrous oxide flux to soil environmental factors in a subtropical coniferous plantation: A boundary line analysis[J]. EUROPEAN JOURNAL OF SOIL BIOLOGY,2018,86:16-25.
APA	Yu, Guangxia.,Cheng, Shulan.,Fang, Huajun.,Tian, Jing.,Xu, Meng.,...&Cao, Zicheng.(2018).Responses of soil nitrous oxide flux to soil environmental factors in a subtropical coniferous plantation: A boundary line analysis.EUROPEAN JOURNAL OF SOIL BIOLOGY,86,16-25.
MLA	Yu, Guangxia,et al."Responses of soil nitrous oxide flux to soil environmental factors in a subtropical coniferous plantation: A boundary line analysis".EUROPEAN JOURNAL OF SOIL BIOLOGY 86(2018):16-25.