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Responses of soil nitrous oxide flux to soil environmental factors in a subtropical coniferous plantation: A boundary line analysis
Yu, Guangxia1; Cheng, Shulan1; Fang, Huajun1,2,3; Tian, Jing2; Xu, Meng2; Yu, Guirui2; He, Shun1; Geng, Jing2; Cao, Zicheng1
2018-03-01
Source PublicationEUROPEAN JOURNAL OF SOIL BIOLOGY
ISSN1164-5563
Volume86Pages:16-25
Corresponding AuthorCheng, Shulan(slcheng@ucas.ac.cn) ; Fang, Huajun(fanghj@igsnrr.ac.cn)
AbstractSoil 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.
KeywordAtmospheric N deposition Soil N2O flux Soil driving factors Boundary line approach Subtropical plantation forest
DOI10.1016/j.ejsobi.2018.02.002
WOS KeywordAMMONIA-OXIDIZING ARCHAEA ; FILLED PORE-SPACE ; N2O EMISSIONS ; FOREST SOILS ; NITRIC-OXIDE ; TERRESTRIAL ECOSYSTEMS ; PHOSPHORUS ADDITIONS ; AGRICULTURAL SOILS ; CARBON-DIOXIDE ; NORWAY SPRUCE
Indexed BySCI
Language英语
Funding ProjectNational 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]
Funding OrganizationNational Natural Science Foundation of China ; National Key R&D Program of China ; Youth Innovation Research Team Project
WOS Research AreaEnvironmental Sciences & Ecology ; Agriculture
WOS SubjectEcology ; Soil Science
WOS IDWOS:000436056400003
PublisherELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/54622
Collection中国科学院地理科学与资源研究所
Corresponding AuthorCheng, Shulan; Fang, Huajun
Affiliation1.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
Recommended Citation
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.
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