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Higher temperature variability reduces temperature sensitivity of vegetation growth in Northern Hemisphere
Wu, XC (Wu, Xiuchen)1,2; Liu, HY (Liu, Hongyan)3; Li, XY (Li, Xiaoyan)1,2; Piao, SL (Piao, Shilong)3,4; Ciais, P (Ciais, Philippe)5; Guo, WC (Guo, Weichao)3; Yin, Y (Yin, Yi)5; Poulter, B (Poulter, Ben)6,7; Peng, CH (Peng, Changhui)8; Viovy, N (Viovy, Nicolas)5; Vuichard, N (Vuichard, Nicolas)5; Wang, P (Wang, Pei)1,2; Huang, YM (Huang, Yongmei)1,2; Wu, XC; Li, XY
Source PublicationGEOPHYSICAL RESEARCH LETTERS
2017
Volume44Issue:12Pages:6173-6181
DOI10.1002/2017GL073285
AbstractInterannual air temperature variability has changed over some regions in Northern Hemisphere (NH), accompanying with climate warming. However, whether and to what extent it regulates the interannual sensitivity of vegetation growth to temperature variability (i.e., interannual temperature sensitivity)-one central issue in understanding and predicting the responses of vegetation growth to changing climate-still remains poorly quantified and understood. Here we quantify the relationships between the interannual temperature sensitivity of mean growing-season (April-October) normalized difference vegetation index (NDVI) and ecosystem model simulations of gross primary productivity (GPP), and variability in mean growing-season temperature for forest, shrub, and grass over NH. We find that higher interannual variability in mean growing-season temperature leads to consistent decrease in interannual temperature sensitivity of mean growing-season NDVI among all vegetation types but not in model simulations of GPP. Drier condition associates with similar to 130 +/- 150% further decrease in interannual temperature sensitivity of mean growing-season NDVI by temperature variability in forest and shrub. These results illustrate that varying temperature variability can significantly regulate the interannual temperature sensitivity of vegetation growth over NH, interacted with drought variability and nonlinear responses of photosynthesis to temperature. Our findings call for an improved characterization of the nonlinear effects of temperature variability on vegetation growth within global ecosystem models.
Subject Area普通生物学
WOS IDWOS:000405854200035
Language英语
Indexed BySCI
KeywordClimate-change Carbon-cycle Drought Summer Productivity Ecosystems Latitudes Reduction Forests Adaptation
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
Cooperation Status国际
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8051
Collection图书馆
Corresponding AuthorWu, XC; Li, XY
Affiliation1.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing, Peoples R China.
2.Beijing Normal Univ, Sch Nat Resources, Fac Geog Sci, Beijing, Peoples R China.
3.Peking Univ, Coll Urban & Environm Sci, Beijing, Peoples R China.
4.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing, Peoples R China.
5.CEA CNRS UVSQ, UMR8212, Lab Sci Climat & Environm, Gif Sur Yvette, France.
6.Montana State Univ, Dept Ecol, Bozeman, MT 59717 USA.
7.Montana State Univ, Inst Ecosyst, Bozeman, MT 59717 USA.
8.Univ Quebec Montreal, Inst Environm Sci, Montreal, PQ, Canada.
Recommended Citation
GB/T 7714
Wu, XC ,Liu, HY ,Li, XY ,et al. Higher temperature variability reduces temperature sensitivity of vegetation growth in Northern Hemisphere[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(12):6173-6181.
APA Wu, XC .,Liu, HY .,Li, XY .,Piao, SL .,Ciais, P .,...&Li, XY.(2017).Higher temperature variability reduces temperature sensitivity of vegetation growth in Northern Hemisphere.GEOPHYSICAL RESEARCH LETTERS,44(12),6173-6181.
MLA Wu, XC ,et al."Higher temperature variability reduces temperature sensitivity of vegetation growth in Northern Hemisphere".GEOPHYSICAL RESEARCH LETTERS 44.12(2017):6173-6181.
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