Widespread reduction in gross primary productivity caused by the compound heat and drought in Yangtze River Basin in 2022
文献类型：期刊论文
| 作者 | Li, Tingyu4; Wang, Shaoqiang3,4; Chen, Bin3; Wang, Yingping2; Chen, Shiliang4; Chen, Jinghua3; Xiao, Yuhan4; Xia, Ye4; Zhao, Ziqi4; Chen, Xuan4 |
| 刊名 | ENVIRONMENTAL RESEARCH LETTERS
 |
| 出版日期 | 2024-03-01 |
| 卷号 | 19期号:3页码:34048 |
| 关键词 | gross primary productivity compound heat and drought extreme climate event Yangtze River Basin |
| DOI | 10.1088/1748-9326/ad2cac |
| 产权排序 | 3 |
| 文献子类 | Article |
| 英文摘要 | Terrestrial ecosystems play a pivotal role in the global carbon sequestration process, and their photosynthetic capacity is highly susceptible to fluctuations in climate conditions. In 2022, the Yangtze River Basin (YRB) in China experienced an extensive and severe compounded heat and drought event. Compared with the past two decades, our results revealed that the temperature increased by approximately 0.78 +/- 0.45 degrees C and precipitation decreased by about 45.20 +/- 30.10 mm from July to October 2022 over the whole YRB. Region I (west from the Sichuan Basin and east to the easternmost of the basin) experienced a more severe temperature increase (0.98 +/- 0.35 degrees C) and precipitation decrease (-60.27 +/- 23.75 mm) compared to the other regions in the YRB. Changes in temperature and precipitation resulted in an increase of 0.14 +/- 0.06 kPa in vapor pressure deficit (VPD) and a decrease of 5.28 +/- 2.09 m3 m-3 in soil moisture, ultimately leading to a total loss of 26.12 +/- 16.09 Tg C (about -6.08% compared to the 2001-2021 mean) in gross primary productivity (GPP) of July to October in 2022. It is noteworthy that broadleaf forests, which comprise 12.03% of the natural vegetation in region I, contributed only 6.46% of the GPP loss between July and October compared to other vegetation types, showing greater resistance to this climate event. Our findings from multiple linear regressions highlight that high temperatures and reduced soil moisture together contribute up to 94% photosynthesis loss in July-October in natural vegetation in region I, while the contribution of reduced VPD is minimal. In the future, we will further explore the impacts of compound heat and drought events on the coupled carbon and water cycles across different ecosystems, in order to better understand the ecosystem response mechanisms to extreme climates. |
| WOS关键词 | CLIMATE EXTREMES ; TEMPERATURE ; IMPACT ; FOREST |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | IOP Publishing Ltd |
| WOS记录号 | WOS:001178957800001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/203330]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 作者单位 | 1.CSIRO Ocean & Atmosphere Flagship, Private Bag 1, Aspendale, Vic 3195, Australia 2.Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, CAS, Beijing, Peoples R China 3.Minist Nat Resources, Engn Technol Innovat Ctr Intelligent Monitoring &, Wuhan, Hubei, Peoples R China 4.China Univ Geosci, Sch Geog & Informat Engn, Hubei Key Lab Reg Ecol & Environm Change, Wuhan, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Tingyu,Wang, Shaoqiang,Chen, Bin,et al. Widespread reduction in gross primary productivity caused by the compound heat and drought in Yangtze River Basin in 2022[J]. ENVIRONMENTAL RESEARCH LETTERS,2024,19(3):34048. |
| APA | Li, Tingyu.,Wang, Shaoqiang.,Chen, Bin.,Wang, Yingping.,Chen, Shiliang.,...&Gu, Peng.(2024).Widespread reduction in gross primary productivity caused by the compound heat and drought in Yangtze River Basin in 2022.ENVIRONMENTAL RESEARCH LETTERS,19(3),34048. |
| MLA | Li, Tingyu,et al."Widespread reduction in gross primary productivity caused by the compound heat and drought in Yangtze River Basin in 2022".ENVIRONMENTAL RESEARCH LETTERS 19.3(2024):34048. |
入库方式： OAI收割
来源：地理科学与资源研究所
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