Soil moisture dominates the severe decline in gross primary productivity during a 2023-2024 compound heatwave-drought event over the Amazon
文献类型：期刊论文
| 作者 | Yang, Te6; Chen, Bin5; Wang, Shaoqiang5,6; Xu, Xiyan3,4; Artaxo, Paulo2; Li, Tingyu6; Peng, Haoyu6; Yu, Xin1,6 |
| 刊名 | ENVIRONMENTAL RESEARCH LETTERS
 |
| 出版日期 | 2025-03-01 |
| 卷号 | 20期号:3页码:34024 |
| 关键词 | gross primary productivity compound heatwave-drought extreme climate event Amazon |
| ISSN号 | 1748-9326 |
| DOI | 10.1088/1748-9326/adb0e1 |
| 产权排序 | 2 |
| 文献子类 | Letter |
| 英文摘要 | The Amazon, the world's largest tropical forest, plays a critical role in the global carbon cycle. It has a large carbon pool and acts as a major carbon sink. However, in 2023-2024, a compound heatwave-drought (CHWD) event (HD2023) hit the Amazon region, resulting in extreme temperatures and soil moisture deficits, threatening the region's carbon sink capacity. Using advanced multisource satellite data and meteorological reanalysis, we quantified the impact of various climatic factors on vegetation productivity during HD2023 and analyzed its progression. Our findings showed that HD2023 led to a 530 Tg C decline in gross primary productivity (GPP) and 0.003 reduction in near-infrared reflectance of vegetation. The strongest phase of the event spanned 5 months, causing persistently high temperatures and reduced precipitation, leading to a continuous decline in soil moisture and marked reduction in GPP. The most severe decrease in GPP occurred in January 2024. The event originated in the northwest and gradually spread to the southeast. Soil moisture was the dominant factor in the decline of photosynthesis across vegetation types, whereas high solar radiation mitigated the impact of drought in evergreen broad forests and savannas. Moreover, the sensitivity of GPP to CHWD varied across vegetation types, ranking as grassland > savanna > evergreen broad forest. This study assessed the impact of HD2023 on regional carbon flux in the Amazon. As climate projections indicate future increases in climate extremes over the Amazon, it is important to identify the drivers of this impact on the carbon cycle of the Amazon. |
| URL标识 | 查看原文 |
| WOS关键词 | CARBON ; UNCERTAINTY ; DRIVERS ; TRENDS ; CHINA ; SINK |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001425329400001 |
| 出版者 | IOP Publishing Ltd |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/212295]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 通讯作者 | Chen, Bin; Wang, Shaoqiang |
| 作者单位 | 1.World Wide Fund Nat Beijing Off, Beijing, Peoples R China 2.Univ Sao Paulo, Inst Phys, Sao Paulo, Brazil; 3.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteorol, Nanjing, Peoples R China; 4.Chinese Acad Sci, Inst Atmospher Phys, Key Lab Reg Climate Environm Temperate East Asia, Beijing, Peoples R China; 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China; 6.China Univ Geosci, Sch Geog & Informat Engn, Wuhan, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Yang, Te,Chen, Bin,Wang, Shaoqiang,et al. Soil moisture dominates the severe decline in gross primary productivity during a 2023-2024 compound heatwave-drought event over the Amazon[J]. ENVIRONMENTAL RESEARCH LETTERS,2025,20(3):34024. |
| APA | Yang, Te.,Chen, Bin.,Wang, Shaoqiang.,Xu, Xiyan.,Artaxo, Paulo.,...&Yu, Xin.(2025).Soil moisture dominates the severe decline in gross primary productivity during a 2023-2024 compound heatwave-drought event over the Amazon.ENVIRONMENTAL RESEARCH LETTERS,20(3),34024. |
| MLA | Yang, Te,et al."Soil moisture dominates the severe decline in gross primary productivity during a 2023-2024 compound heatwave-drought event over the Amazon".ENVIRONMENTAL RESEARCH LETTERS 20.3(2025):34024. |
入库方式： OAI收割
来源：地理科学与资源研究所
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