IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Soil C and N dynamics and their non-additive responses to litter mixture under different moisture conditions from an alpine steppe soil, Northern Tibet
Chen, Youchao1,2; Ma, Shuqin1,2; Liu, Jing3; Cheng, Genwei1; Lu, Xuyang1
2018
Source PublicationSOIL BIOLOGY & BIOCHEMISTRY
ISSN0038-0717
Volume125Pages:231-238
SubtypeArticle
AbstractAlthough there is a strong consensus that biodiversity can influence ecosystem functioning, how litter diversity affects soil ecological processes in different climatic contexts has been rarely studied. Here, we employed a mixed-litters' experiment to examine how mixed-litters decomposition affects soil carbon (C) and nitrogen (N) dynamics under different moisture conditions from an alpine steppe soil in Northern Tibet. Litter of alpine steppe species, in monoculture or combination, were mixed with soil in 20%, 30% and 40% water holding capacities (WHC) in microcosms. During each microcosm incubation, we measured CO2 emissions, soluble organic carbon (SOC), total inorganic N (TIN) and microbial biomass C (MBC). Our results showed that CO2, SOC, TIN and MBC differed significantly among litter treatments and soil moisture. In the litter mixture, frequent and unsystematic non-additive effects could be found in CO2, SOC, TIN and MBC, and the non-additivities could be explained by the litter chemical traits. Higher soil moisture strengthened the synergistic effects of litter-mixing on CO2 and antagonistic effects on TIN, while weaken the synergistic effect on SOC and the antagonistic effects on MBC. This result indicated that, under multiple litter species decomposition, a changing soil moisture from dry to wet generally accelerate CO2 emission and increase MBC, while decrease the accumulation of SOC and TIN. Our work demonstrated that soil C and N dynamics and their non-additive responses to litter mixture were climatic context dependent. Soil moisture condition should be considered in understanding the effects of litter diversity on soil C and N processes.
KeywordSoil carbon and nitrogen cycling Litter diversity Non-additive effects Northern Tibet
DOI10.1016/j.soilbio.2018.07.016
Indexed BySCI
WOS KeywordCHEMICAL DIVERSITY ; ECOSYSTEM FUNCTION ; SPECIES-DIVERSITY ; CLIMATE-CHANGE ; LEAF-LITTER ; DECOMPOSITION ; CARBON ; NITROGEN ; BIODIVERSITY ; CHEMISTRY
Language英语
Quartile1区
Funding ProjectNational Natural Science Foundation of China[41671262] ; National Natural Science Foundation of China[41371267] ; Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences ; China Scholarship Council[201504910646]
TOP
WOS Research AreaAgriculture
WOS SubjectSoil Science
WOS IDWOS:000444660400024
Funding OrganizationNational Natural Science Foundation of China ; Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences ; China Scholarship Council
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/23876
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorLu, Xuyang
Affiliation1.Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
2.Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100101, Peoples R China
3.Southwest Med Univ, Luzhou 646000, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Chen, Youchao,Ma, Shuqin,Liu, Jing,et al. Soil C and N dynamics and their non-additive responses to litter mixture under different moisture conditions from an alpine steppe soil, Northern Tibet[J]. SOIL BIOLOGY & BIOCHEMISTRY,2018,125:231-238.
APA Chen, Youchao,Ma, Shuqin,Liu, Jing,Cheng, Genwei,&Lu, Xuyang.(2018).Soil C and N dynamics and their non-additive responses to litter mixture under different moisture conditions from an alpine steppe soil, Northern Tibet.SOIL BIOLOGY & BIOCHEMISTRY,125,231-238.
MLA Chen, Youchao,et al."Soil C and N dynamics and their non-additive responses to litter mixture under different moisture conditions from an alpine steppe soil, Northern Tibet".SOIL BIOLOGY & BIOCHEMISTRY 125(2018):231-238.
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