Tracking Global Patterns of Drought-Induced Productivity Loss Along Severity Gradient
文献类型：期刊论文
| 作者 | Wang, Yiheng1,3; Fu, Zheng2; Hu, Zhongmin4; Niu, Shuli1,3 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
 |
| 出版日期 | 2022-06-01 |
| 卷号 | 127期号:6页码:13 |
| 关键词 | drought severity GPP SPEI global patterns nonlinear models drought sensitivity changes |
| ISSN号 | 2169-8953 |
| DOI | 10.1029/2021JG006753 |
| 通讯作者 | Niu, Shuli(sniu@igsnrr.ac.cn) |
| 英文摘要 | Droughts significantly impact land carbon uptake by reducing the gross primary productivity (GPP). Projections suggest an increase in severe and extreme droughts in the twenty-first century. Despite the importance of droughts on carbon uptakes, it remains unclear about the GPP responses under different drought severity and its changes under current climate changes. Using four state-of-the-science GPP products, we showed that moderate (-1 <= SPEI < -1.5), severe (-1.5 <= SPEI < -2), and extreme (SPEI < -2) droughts caused on average 5%, 7%, and 9% GPP reductions, respectively, across the globe during the recent decades. Although the mean reductions varied among GPP products, we observed similar spatial patterns. The reductions increased significantly along the severity gradient, while the sharpest increases were observed in semi-arid and grassland ecosystems. On a biome level, we found that the reductions increased nonlinearly with increasing drought severities for almost all vegetation types, but the trends and slopes varied significantly. In addition, we found that the mean drought-induced GPP reductions had increased in dry ecosystems but decreased in humid ecosystems from 2001-2008 to 2009-2016. The result highlights the potential increase of drought-induced land carbon sink loss responding to more extreme climates and offers new perspectives to improve the prediction of global carbon fluxes in a changing climate. |
| WOS关键词 | GROSS PRIMARY PRODUCTION ; VEGETATION PRODUCTIVITY ; CARBON-DIOXIDE ; CLIMATE ; SENSITIVITY ; MODELS ; IMPACTS ; FLUXES ; FOREST ; TEMPERATURE |
| 资助项目 | National Natural Science Foundation of China[31625006] ; National Natural Science Foundation of China[31988102] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000806239100001 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/178696]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Niu, Shuli |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Resources & Environm, Beijing, Peoples R China 2.CNRS, CEA, UVSQ, Lab Sci Climat & Environm LSCE,UMR8212, Gif Sur Yvette, France 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Simulat, Beijing, Peoples R China 4.South China Normal Univ, Sch Geog, Guangzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yiheng,Fu, Zheng,Hu, Zhongmin,et al. Tracking Global Patterns of Drought-Induced Productivity Loss Along Severity Gradient[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2022,127(6):13. |
| APA | Wang, Yiheng,Fu, Zheng,Hu, Zhongmin,&Niu, Shuli.(2022).Tracking Global Patterns of Drought-Induced Productivity Loss Along Severity Gradient.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,127(6),13. |
| MLA | Wang, Yiheng,et al."Tracking Global Patterns of Drought-Induced Productivity Loss Along Severity Gradient".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 127.6(2022):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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