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Direct and indirect effects of climatic variations on the interannual variability in net ecosystem exchange across terrestrial ecosystems

文献类型：期刊论文

作者Shao, Junjiong1,2,3; Zhou, Xuhui1,2; Luo, Yiqi4; Li, Bo3; Aurela, Mika5; Billesbach, David; Blanken, Peter D.7; Bracho, Rosvel8; Chen, Jiquan9,10,11; Fischer, Marc6
刊名TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY
出版日期2016
卷号68页码:16
关键词net ecosystem exchange interannual variability climatic variations physiological parameters direct and indirect effects relative importance
ISSN号1600-0889
DOI10.3402/tellusb.v68.30575
通讯作者Zhou, Xuhui(xhzhou@des.ecnu.edu.cn)
英文摘要Climatic variables not only directly affect the interannual variability (IAV) in net ecosystem exchange of CO2 (NEE) but also indirectly drive it by changing the physiological parameters. Identifying these direct and indirect paths can reveal the underlying mechanisms of carbon (C) dynamics. In this study, we applied a path analysis using flux data from 65 sites to quantify the direct and indirect climatic effects on IAV in NEE and to evaluate the potential relationships among the climatic variables and physiological parameters that represent physiology and phenology of ecosystems. We found that the maximum photosynthetic rate was the most important factor for the IAV in gross primary productivity (GPP), which was mainly induced by the variation in vapour pressure deficit. For ecosystem respiration (RE), the most important drivers were GPP and the reference respiratory rate. The biome type regulated the direct and indirect paths, with distinctive differences between forests and non-forests, evergreen needleleaf forests and deciduous broadleaf forests, and between grasslands and croplands. Different paths were also found among wet, moist and dry ecosystems. However, the climatic variables can only partly explain the IAV in physiological parameters, suggesting that the latter may also result from other biotic and disturbance factors. In addition, the climatic variables related to NEE were not necessarily the same as those related to GPP and RE, indicating the emerging difficulty encountered when studying the IAV in NEE. Overall, our results highlight the contribution of certain physiological parameters to the IAV in C fluxes and the importance of biome type and multi-year water conditions, which should receive more attention in future experimental and modelling research.
WOS关键词WATER-USE EFFICIENCY ; CARBON-DIOXIDE EXCHANGE ; LIGHT-USE EFFICIENCY ; GROSS PRIMARY PRODUCTION ; CO2 EXCHANGE ; LONG-TERM ; SOIL RESPIRATION ; PINE FOREST ; DECIDUOUS FOREST ; ENVIRONMENTAL CONTROLS
资助项目National Natural Science Foundation of China[31370489]
WOS研究方向Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:000396017000001
出版者TAYLOR & FRANCIS LTD
资助机构National Natural Science Foundation of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/64619]  
专题地理科学与资源研究所_生态系统研究网络观测与模拟重点实验室_CERN水分分中心
通讯作者Zhou, Xuhui
作者单位1.China Normal Univ, Sch Ecol & Environm Sci, Shanghai 200062, Peoples R China
2.China Normal Univ, Ctr Global Change & Ecol Forecasting, Shanghai 200062, Peoples R China
3.Fudan Univ, Inst Biodivers Sci, Sch Life Sci, Minist Educ Key Lab Biodivers Sci & Ecol Engn, 2005 Songhu Rd, Shanghai 200438, Peoples R China
4.Univ Oklahoma, Dept Microbiol & Plant Biol, Norman, OK 73019 USA
5.Finnish Meteorol Inst, P Box 503, Helsinki, Finland
6.Univ Nebraska Lincoln, Dept Biol Syst Engn, Lincoln, NE 68583 USA
7.Univ Colorado, Dept Geog, Boulder, CO 80309 USA
8.Univ Florida, Sch Forest Resources & Conservat, Gainesville, FL 32611 USA
9.Michigan State Univ, Landscape Ecol Ecosystem Sci LEES Lab, E Lansing, MI 48823 USA
10.Michigan State Univ, Dept Geog, E Lansing, MI 48823 USA
推荐引用方式
GB/T 7714		 Shao, Junjiong,Zhou, Xuhui,Luo, Yiqi,et al. Direct and indirect effects of climatic variations on the interannual variability in net ecosystem exchange across terrestrial ecosystems[J]. TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY,2016,68:16.
APA Shao, Junjiong.,Zhou, Xuhui.,Luo, Yiqi.,Li, Bo.,Aurela, Mika.,...&Zhang, Junhui.(2016).Direct and indirect effects of climatic variations on the interannual variability in net ecosystem exchange across terrestrial ecosystems.TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY,68,16.
MLA Shao, Junjiong,et al."Direct and indirect effects of climatic variations on the interannual variability in net ecosystem exchange across terrestrial ecosystems".TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY 68(2016):16.

入库方式： OAI收割

来源：地理科学与资源研究所

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