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学科主题: 生物科学::普通生物学
题名: Higher temperature variability reduces temperature sensitivity of vegetation growth in Northern Hemisphere
作者: 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
通讯作者: Wu, XC ; Li, XY
关键词: CLIMATE-CHANGE ; CARBON-CYCLE ; DROUGHT ; SUMMER ; PRODUCTIVITY ; ECOSYSTEMS ; LATITUDES ; REDUCTION ; FORESTS ; ADAPTATION
刊名: GEOPHYSICAL RESEARCH LETTERS
发表日期: 2017
DOI: 10.1002/2017GL073285
卷: 44, 期:12, 页:6173-6181
收录类别: SCI
合作性质: 国际
文章类型: Article
类目[WOS]: Geosciences, Multidisciplinary
研究领域[WOS]: Geology
英文摘要: Interannual 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.
语种: 英语
WOS记录号: WOS:000405854200035
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/8051
Appears in Collections:图书馆_期刊论文

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作者单位: 1.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:
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.
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