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Differential responses of ecosystem respiration components to experimental warming in a meadow grassland on the Tibetan Plateau
Chen, Ji1,2; Luo, Yiqi3,4; Xia, Jianyang5; Shi, Zheng3; Jiang, Lifen3; Niu, Shuli6; Zhou, Xuhui5; Cao, Junji1,7
2016-04-15
发表期刊AGRICULTURAL AND FOREST METEOROLOGY
卷号220期号:2016页码:21-29
文章类型Article
摘要Global warming is anticipated to have profound effects on terrestrial carbon fluxes and thus feed backs to future climate change. Ecosystem respiration (R-eco) is one of the dominant components of biosphere CO2 fluxes, but the effects of warming on Reco are still unclear. A field warming experiment using open top chambers (OTCs) was conducted in a meadow grassland on the Tibetan Plateau to study the effects of warming on the components of Reco. Warming significantly enhanced above-ground plant respiration (R-agb) and total autotrophic plant respiration (R-plant 1 by 28.7% and 19.9%, respectively, but reduced heterotrophic respiration (R-h) by 10.4%. These different responses resulted in the insensitive responses of Reco and soil respiration (R-s) to the experimental warming. The warming treatment also increased R-plant/R-eco and R-agb/R-eco. by 8.4% and 17.3%, respectively, while decreasing R-h/R-eco, by 19.0%, suggesting that warming could eventually cause R-eco to be dominated by R-plant. Enhancements in Roam and R-agb were related to the warming-induced increases in aboveground biomass (AGB) while reduced R-h was closely coupled with warming-induced decrease of microbial biomass carbon. Our results highlight that the differential responses of the components of R-eco to different environmental physics under warming scenarios should be taken into consideration to project the future carbon-climate feed backs. (C) 2016 Elsevier B.V. All rights reserved.
关键词Ecosystem Respiration Soil Respiration Total Autotrophic Respiration Heterotrophic Respiration Experimental Warming Tibetan Plateau
WOS标题词Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1016/j.agrformet.2016.01.010
关键词[WOS]CARBON-CYCLE FEEDBACK ; OPEN-TOP CHAMBERS ; SOIL CO2 EFFLUX ; AUTOTROPHIC RESPIRATION ; THERMAL-ACCLIMATION ; CLIMATE-CHANGE ; ALPINE MEADOW ; HETEROTROPHIC RESPIRATION ; TEMPERATURE SENSITIVITY ; MICROBIAL RESPIRATION
收录类别SCI
语种英语
WOS研究方向Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS类目Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS记录号WOS:000372385100003
引用统计
被引频次:29[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5810
专题粉尘与环境研究室
作者单位1.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Oklahoma, Dept Microbiol & Plant Biol, Norman, OK 73019 USA
4.Tsinghua Univ, Ctr Earth Syst Sci, Beijing 100084, Peoples R China
5.E China Normal Univ, Sch Ecol & Environm Sci, Ctr Global Change & Ecol Forecasting, Shanghai 200241, Peoples R China
6.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Synth Res Ctr,Chinese Ecosyst Res Network, Beijing 100101, Peoples R China
7.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China
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Chen, Ji,Luo, Yiqi,Xia, Jianyang,et al. Differential responses of ecosystem respiration components to experimental warming in a meadow grassland on the Tibetan Plateau[J]. AGRICULTURAL AND FOREST METEOROLOGY,2016,220(2016):21-29.
APA Chen, Ji.,Luo, Yiqi.,Xia, Jianyang.,Shi, Zheng.,Jiang, Lifen.,...&Cao, Junji.(2016).Differential responses of ecosystem respiration components to experimental warming in a meadow grassland on the Tibetan Plateau.AGRICULTURAL AND FOREST METEOROLOGY,220(2016),21-29.
MLA Chen, Ji,et al."Differential responses of ecosystem respiration components to experimental warming in a meadow grassland on the Tibetan Plateau".AGRICULTURAL AND FOREST METEOROLOGY 220.2016(2016):21-29.
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