Knowledge Management System of Northwest Institute of Plateau Biology, CAS
| Biotic and climatic controls on interannual variability in carbon fluxes across terrestrial ecosystems | |
| Shao, Junjiong1; Zhou, Xuhui1; Luo, Yiqi2; Li, Bo1; Aurela, Mika3; Billesbach, David4; Blanken, Peter D.5; Bracho, Rosvel6; Chen, Jiquan7; Fischer, Marc4; Fu, Yuling8; Gu, Lianhong9; Han, Shijie10; He, Yongtao11; Kolb, Thomas12; Li, Yingnian13; Nagy, Zoltan14; Niu, Shuli; Oechel, Walter C.15; Pinter, Krisztina; Shi, Peili11; Suyker, Andrew16; Torn, Margaret4; Varlagin, Andrej17; Wang, Huimin; Yan, Junhua18; Yu, Guirui; Zhang, Junhui10 | |
| 2015-06-01 | |
| 发表期刊 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 卷号 | 205页码:11-22 |
| 文章类型 | Article |
| 摘要 | Interannual variability (IAV, represented by standard deviation) in net ecosystem exchange of CO2 (NEE) is mainly driven by climatic drivers and biotic variations (i.e., the changes in photosynthetic and respiratory responses to climate), the effects of which are referred to as climatic (CE) and biotic effects (BE), respectively. Evaluating the relative contributions of CE and BE to the IAV in carbon (C) fluxes and understanding their controlling mechanisms are critical in projecting ecosystem changes in the future climate. In this study, we applied statistical methods with flux data from 65 sites located in the Northern Hemisphere to address this issue. Our results showed that the relative contribution of BE (CnBE) and CE (CnCE) to the IAV in NEE was 57%+/- 14% and 43%+/- 14%, respectively. The discrepancy in the CnBE among sites could be largely explained by water balance index (WBI). Across water-stressed ecosystems, the CnBE decreased with increasing aridity (slope =0.18%mm(-1)). In addition, the CnBE tended to increase and the uncertainty reduced as timespan of available data increased from 5 to 15 years. Inter-site variation of the IAV in NEE mainly resulted from the IAV in BE (72%) compared to that in CE (37%). Interestingly, positive correlations between BE and CE occurred in grasslands and dry ecosystems (r> 0.45, P< 0.05) but not in other ecosystems. These results highlighted the importance of BE in determining the IAV in NEE and the ability of ecosystems to regulate C fluxes under climate change might decline when the ecosystems experience more severe water stress in the future. (C) 2015 Elsevier B.V. All rights reserved.; Interannual variability (IAV, represented by standard deviation) in net ecosystem exchange of CO2 (NEE) is mainly driven by climatic drivers and biotic variations (i.e., the changes in photosynthetic and respiratory responses to climate), the effects of which are referred to as climatic (CE) and biotic effects (BE), respectively. Evaluating the relative contributions of CE and BE to the IAV in carbon (C) fluxes and understanding their controlling mechanisms are critical in projecting ecosystem changes in the future climate. In this study, we applied statistical methods with flux data from 65 sites located in the Northern Hemisphere to address this issue. Our results showed that the relative contribution of BE (CnBE) and CE (CnCE) to the IAV in NEE was 57%+/- 14% and 43%+/- 14%, respectively. The discrepancy in the CnBE among sites could be largely explained by water balance index (WBI). Across water-stressed ecosystems, the CnBE decreased with increasing aridity (slope =0.18%mm(-1)). In addition, the CnBE tended to increase and the uncertainty reduced as timespan of available data increased from 5 to 15 years. Inter-site variation of the IAV in NEE mainly resulted from the IAV in BE (72%) compared to that in CE (37%). Interestingly, positive correlations between BE and CE occurred in grasslands and dry ecosystems (r> 0.45, P< 0.05) but not in other ecosystems. These results highlighted the importance of BE in determining the IAV in NEE and the ability of ecosystems to regulate C fluxes under climate change might decline when the ecosystems experience more severe water stress in the future. (C) 2015 Elsevier B.V. All rights reserved. |
| 关键词 | Net Ecosystem Exchange Interannual Variability Biotic Effect Climatic Effect Relative Importance Climatic Stress |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 关键词[WOS] | ATMOSPHERE CO2 EXCHANGE ; EUROPEAN FORESTS ; UNDERLYING MECHANISMS ; THERMAL-ACCLIMATION ; DECIDUOUS FOREST ; SHORT-TERM ; RESPIRATION ; DROUGHT ; DIOXIDE ; SOIL |
| 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:000352329700002 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://210.75.249.4/handle/363003/5552 |
| 专题 | 中国科学院西北高原生物研究所 |
| 作者单位 | 1.Fudan Univ, Sch Life Sci, Key Lab Biodivers Sci & Ecol Engn,Inst Biodivers, Coastal Ecosyst Res Stn Yangtze River Estuary,Min, Shanghai 200433, Peoples R China 2.Univ Oklahoma, Dept Microbiol & Plant Biol, Norman, OK 73019 USA 3.Finnish Meteorol Inst, FI-00101 Helsinki, Finland 4.Univ Nebraska, Dept Biol Syst Engn, Lincoln, NE 68583 USA 5.Univ Colorado, Dept Geog, Boulder, CO 80309 USA 6.Univ Florida, Sch Forest Resources & Conservat, Gainesville, FL 32611 USA 7.Univ Toledo, Dept Environm Sci, Toledo, OH 43606 USA 8.E China Normal Univ, Shanghai Key Lab Urban Ecol Proc & Ecorestorat, Shanghai 2000241, Peoples R China 9.Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA 10.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Liaoning 110016, Peoples R China 11.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 12.No Arizona Univ, Sch Forestry, Flagstaff, AZ 86011 USA 13.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining 810001, Qinghai, Peoples R China 14.Szent Istvan Univ, Inst Bot Ecophysiol, H-2100 Godollo, Hungary 15.San Diego State Univ, Global Change Res Grp, San Diego, CA 92182 USA 16.Univ Nebraska, Sch Nat Resources, Lincoln, NE 68583 USA 17.Russian Acad Sci, AN Severtsov Inst Ecol & Evolut, Moscow 119071, Russia 18.Chinese Acad Sci, South China Bot Garden, Guangzhou 51065, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shao, Junjiong,Zhou, Xuhui,Luo, Yiqi,et al. Biotic and climatic controls on interannual variability in carbon fluxes across terrestrial ecosystems[J]. AGRICULTURAL AND FOREST METEOROLOGY,2015,205:11-22. |
| APA | Shao, Junjiong.,Zhou, Xuhui.,Luo, Yiqi.,Li, Bo.,Aurela, Mika.,...&Zhang, Junhui.(2015).Biotic and climatic controls on interannual variability in carbon fluxes across terrestrial ecosystems.AGRICULTURAL AND FOREST METEOROLOGY,205,11-22. |
| MLA | Shao, Junjiong,et al."Biotic and climatic controls on interannual variability in carbon fluxes across terrestrial ecosystems".AGRICULTURAL AND FOREST METEOROLOGY 205(2015):11-22. |
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