IMHE OpenIR  > 山地表生过程与生态调控重点实验室
The effect of nitrogen deposition rather than warming on carbon flux in alpine meadows depends on precipitation variations
Chen, Xiaopeng1,2; Wang, Genxu1; Huang, Kewei1,2; Hu, Zhaoyong1,2; Song, Chunlin1,2; Liang, Yiming1,2; Wang, Jian1,2; Song, Xiaoyan1,2; Lin, Shan1,2
Corresponding AuthorGenxu Wang
2017
Source PublicationECOLOGICAL ENGINEERING
ISSN0925-8574
EISSN1872-6992
Volume107Pages:183-191
SubtypeArticle
Abstract

Uncertainties remain regarding the effects of climate warming and increasing nitrogen (N) deposition on greenhouse gas (GHG) flux in alpine grasslands due to a lack of knowledge about how hydrological characteristics control GHG fluxes. Therefore, a simulated warming and N fertilization experiment was conducted in a non-wetland (alpine meadow, AM) and a wetland (alpine swamp meadow, SM). We measured and analysed the key GHG fluxes (ecosystem respiration [Re], CH4 and N2O) of each treatment during two contrasting hydrological growing seasons. The results showed that: (i) warming increased the Re in both the AM and SM, warming increased the CH4 uptake in the AM but had no effect in the SM, and warming increased the N2O emissions from the AM and resulted in a change of the SM from a N2O sink into a source; (ii) N fertilization decreased the Re of the AM during the dry growing season and of the SM during the wet growing season, increased the CH4 uptake of the AM during the dry growing season, and had no effect on the CH4 and N2O fluxes of the SM; and (iii) the interaction between warming and N fertilization increased the CH4 uptake of the AM over the two growing seasons while increasing the CH4 uptake and N2O emissions of the SM during the dry growing season. Our results suggest that (i) the GHG flux of wetland ecosystems is more sensitive to precipitation variations than that of non-wetlands and (ii) precipitation controls the carbon (Re and CH4) flux response to increasing N deposition of these alpine meadows. (C) 2017 Elsevier B.V. All rights reserved.

KeywordSimulated Warming Nitrogen Addition Greenhouse Gas Precipitation Variation Wetland
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Technology
DOI10.1016/j.ecoleng.2017.07.018
WOS Subject ExtendedEnvironmental Sciences & Ecology ; Engineering
Indexed BySCI
WOS KeywordQINGHAI-TIBETAN PLATEAU ; N2O FLUXES ; PERMAFROST REGION ; SOIL RESPIRATION ; CLIMATE-CHANGE ; TEMPERATURE SENSITIVITY ; ECOSYSTEM RESPIRATION ; GROWING SEASONS ; TERM NITROGEN ; N-DEPOSITION
Language英语
Quartile3区
TOP
WOS SubjectEcology ; Engineering, Environmental ; Environmental Sciences
WOS IDWOS:000408676900019
Funding OrganizationNational Basic Research Program of China(2013CBA01807) ; National Natural Science Foundation of China(41271224 ; National Science and Technology Support Program of China(2014BAC05B01) ; 91547203 ; 41671206)
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/19106
Collection山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, 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
Recommended Citation
GB/T 7714
Chen, Xiaopeng,Wang, Genxu,Huang, Kewei,et al. The effect of nitrogen deposition rather than warming on carbon flux in alpine meadows depends on precipitation variations[J]. ECOLOGICAL ENGINEERING,2017,107:183-191.
APA Chen, Xiaopeng.,Wang, Genxu.,Huang, Kewei.,Hu, Zhaoyong.,Song, Chunlin.,...&Lin, Shan.(2017).The effect of nitrogen deposition rather than warming on carbon flux in alpine meadows depends on precipitation variations.ECOLOGICAL ENGINEERING,107,183-191.
MLA Chen, Xiaopeng,et al."The effect of nitrogen deposition rather than warming on carbon flux in alpine meadows depends on precipitation variations".ECOLOGICAL ENGINEERING 107(2017):183-191.
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