Climate Controls on the Spatial Variability of Vegetation Greenup Rate across Ecosystems in Northern Hemisphere
文献类型：期刊论文
| 作者 | Zheng, Zhoutao |
| 刊名 | PLANTS-BASEL
 |
| 出版日期 | 2022-11-01 |
| 卷号 | 11期号:21页码:15 |
| 关键词 | greenup rate eddy covariance phenology vegetation dynamics spatial variability gross primary productivity |
| DOI | 10.3390/plants11212971 |
| 通讯作者 | Zheng, Zhoutao(zhengzt@igsnrr.ac.cn) |
| 英文摘要 | Variations in individual phenological events in response to global change have received considerable attentions. However, the development of phenological stages is relatively neglected, especially based on in situ observation data. In this study, the rate of vegetation greenup (Vgreenup) across the Northern Hemisphere was examined for different plant functional types (PFTs) by using eddy covariance flux data from 40 sites (417 site-years). Then, the controls of climatic variables on the spatial distribution of Vgreenup across PFTs were further investigated. The mean Vgreenup was 0.22 +/- 0.11 g C m(-2) day(-2) across all sites, with the largest and lowest values observed in cropland and evergreen needle-leaf forest, respectively. A strong latitude dependence by Vgreenup was observed in both Europe and North America. The spatial variations of Vgreenup were jointly regulated by the duration of greenup (Dgreenup) and the amplitude of greenup (Agreenup). However, the predominant factor was Dgreenup in Europe, which changed to Agreenup in North America. Spring climatic factors exerted significant influences on the spatial distribution of Vgreenup across PFTs. Specifically, increasing temperature tended to shorten Dgreenup and promote Agreenup simultaneously, resulting in an acceleration of Vgreenup. Dryness had a depression effect on Vgreenup for the whole study area, as exhibited by a lower Vgreenup with increasing vapor pressure deficit or decreasing soil moisture. However, Vgreenup in North America was only significantly and positively correlated with temperature. Without the limitation of other climatic factors, the temperature sensitivity of Vgreenup was higher in North America (0.021 g C m(-2) day(-2) degrees C-1) than in Europe (0.015 g C m(-2 )day(-2) degrees C-1). This study provides new cognitions for Vgreenup dynamics from in situ observations in complement to satellite observations, which can improve our understanding of terrestrial carbon cycles. |
| WOS关键词 | GROSS PRIMARY PRODUCTIVITY ; LAND-SURFACE ; PLANT PHENOLOGY ; IMPACTS ; TEMPERATURE ; EVAPORATION ; RESPONSES ; DROUGHT ; FORESTS ; REGIONS |
| 资助项目 | National Key Research and Development Program of China[2019YFC0507801] ; Chinese Academy of Sciences[XDA19070303] ; National Natural Science Foundation of China[41901131] ; National Natural Science Foundation of China[41725003] ; West Light Foundation of the Chinese Academy of Sciences |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000881560700001 |
| 出版者 | MDPI |
| 资助机构 | National Key Research and Development Program of China ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; West Light Foundation of the Chinese Academy of Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/187087]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Zheng, Zhoutao |
| 作者单位 | Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Lhasa Plateau Ecosyst Res Stn, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Zhoutao. Climate Controls on the Spatial Variability of Vegetation Greenup Rate across Ecosystems in Northern Hemisphere[J]. PLANTS-BASEL,2022,11(21):15. |
| APA | Zheng, Zhoutao.(2022).Climate Controls on the Spatial Variability of Vegetation Greenup Rate across Ecosystems in Northern Hemisphere.PLANTS-BASEL,11(21),15. |
| MLA | Zheng, Zhoutao."Climate Controls on the Spatial Variability of Vegetation Greenup Rate across Ecosystems in Northern Hemisphere".PLANTS-BASEL 11.21(2022):15. |
入库方式： OAI收割
来源：地理科学与资源研究所
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