IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Soil warming and nitrogen deposition alter soil respiration, microbial community structure and organic carbon composition in a coniferous forest on eastern Tibetan Plateau
Sun, Shouqin1; Wu, Yanhong1; Zhang, Jun1,2; Wang, Genxu1; DeLuca, Thomas H.3; Zhu, Wanze1; Li, Andi1,2; Duan, Min4; He, Lei5
Corresponding AuthorWang, Genxu(wanggx@imde.ac.cn) ; He, Lei(helei0304@sicnu.edu.cn)
2019-11-01
Source PublicationGEODERMA
ISSN0016-7061
Volume353Pages:283-292
AbstractUnderstanding the response of soil respiration (R-s) to future climate projections is critical for understanding feedbacks and developing effective mitigation strategies. We conducted a warming and N deposition manipulation experiment using a 2 x 2 full-factorial design to evaluate the interactive effects of soil warming and N deposition on R-s, microbial community composition and soil organic carbon (SOC) composition in a subalpine coniferous forest on the eastern slope of the Qinghai-Tibetan Plateau. Soil warming and N addition independently increased R-s and changed microbial community composition, resulting in a net increase in bacteria with N addition and an increase in protozoa with warming; but the interaction of these two factors proved to be antagonistic, resulting in a lower R-s and protozoa concentration in the combined warming and nitrogen addition (WN) treatment relative to the warming (W) treatment. The chemical structure of SOC changed with the treatments, with alkyl C increased with warming, aromatic C decreased with both warming and N addition, and the interaction of warming and N induced a lower O-alkyl C and a higher contribution of alkyl C to SOC. The negative correlation between R-s and aromatic C and the positive correlation between R-s and alkyl C and MBC indicates that the elevated CO2 emission under warming and N addition was related to the decomposition of aromatic C and the following relative accumulation of alkyl C. Our observations suggest that climate induced soil warming will likely increase soil CO2 emissions, but this effect could be largely offset by a simultaneous increase in N deposition in subalpine coniferous forests.
KeywordCO2 emission Solid-state C-13 NMR Soil carbon composition Soil microbial community Subalpine coniferous forest
DOI10.1016/j.geoderma.2019.07.023
Indexed BySCI
WOS KeywordTEMPERATURE SENSITIVITY ; CO2 ENRICHMENT ; ELEVATED CO2 ; STAND AGE ; C-13 NMR ; RESPONSES ; DECOMPOSITION ; BIOMASS ; FERTILIZATION ; ECOSYSTEMS
Language英语
Funding ProjectAlpine Ecosystem Observation and Experiment Station of Mt. Gongga, Institute of Mountain Hazards and Environment, CAS ; National Natural Science Foundation of China[41877347] ; National Natural Science Foundation of China[41473078] ; National Natural Science Foundation of China[41701260] ; Key Laboratory of Mountain Surface Processes and Ecological Regulation, CAS ; 135 Strategic Program of the Institute of Mountain Hazards and Environment, CAS[SDS-135-1707]
WOS Research AreaAgriculture
WOS SubjectSoil Science
WOS IDWOS:000482513900027
Funding OrganizationAlpine Ecosystem Observation and Experiment Station of Mt. Gongga, Institute of Mountain Hazards and Environment, CAS ; National Natural Science Foundation of China ; Key Laboratory of Mountain Surface Processes and Ecological Regulation, CAS ; 135 Strategic Program of the Institute of Mountain Hazards and Environment, CAS
PublisherELSEVIER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/26951
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorWang, Genxu; He, Lei
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, 9,Block 4,South Renmin Rd, Chengdu 610041, Sichuan, Peoples R China
2.3 Sichuan Normal Univ, Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Univ Montana, WA Franke Coll Forestry & Conservat, 32 Campus Dr, Missoula, MT 59812 USA
4.Northwest A&F Univ, Coll Forestry, Ctr Ecol Forecasting & Global Change, Yangling 712100, Peoples R China
5.Sichuan Normal Univ, Coll Life Sicence, 1819 Chenglong Rd, Chengdu 610101, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Sun, Shouqin,Wu, Yanhong,Zhang, Jun,et al. Soil warming and nitrogen deposition alter soil respiration, microbial community structure and organic carbon composition in a coniferous forest on eastern Tibetan Plateau[J]. GEODERMA,2019,353:283-292.
APA Sun, Shouqin.,Wu, Yanhong.,Zhang, Jun.,Wang, Genxu.,DeLuca, Thomas H..,...&He, Lei.(2019).Soil warming and nitrogen deposition alter soil respiration, microbial community structure and organic carbon composition in a coniferous forest on eastern Tibetan Plateau.GEODERMA,353,283-292.
MLA Sun, Shouqin,et al."Soil warming and nitrogen deposition alter soil respiration, microbial community structure and organic carbon composition in a coniferous forest on eastern Tibetan Plateau".GEODERMA 353(2019):283-292.
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