Divergent Impacts of Evapotranspiration by Plant CO2 Physiological Forcing on the Mean and Variability of Water Availability
文献类型：期刊论文
| 作者 | Li, Ziwei1,2; Sun, Fubao1,2; Liu, Wenbin2; Wang, Hong2; Wang, Tingting2; Feng, Yao2; Tang, Senlin1,2 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
 |
| 出版日期 | 2024-06-16 |
| 卷号 | 129期号:11页码:e2023JD040253 |
| 关键词 | water availability CO2 physiological effects mean and variability evapotranspiration elevated CO2 Earth system models |
| DOI | 10.1029/2023JD040253 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Vegetation responses to rising atmospheric CO2 levels can significantly affect water availability (defined as precipitation minus evapotranspiration (ET)). While this effect has long been recognized and assessed for the mean state, its influence on interannual variability, which is more closely associated with extreme events, has yet to be comprehensively quantified. In this study, our primary focus is to evaluate the impacts of ET by plant physiology (denoted as ETPhy) on the mean and interannual variability of water availability under elevated CO2 using multiple CO2 sensitivity experiments from the coupled model intercomparison project phase 6. We show that the contribution of vegetation physiological effects to the mean water availability varies among regions, while it consistently contributes to variability by about 33%. Considering CO2 physiological effects alone, ETPhy exerts a more significant influence on the mean state than on variability, particularly in humid regions. Consequently, ETPhy contributes less than 5% to the variability of water availability in humid regions under rising CO2, whereas it accounts for about 20% of the mean state. This distinction could be attributed to the different mechanisms governing the mean and variability of ETPhy. Specifically, evaporation from CO2 physiological forcing is the most critical contributor to the variability of ETPhy in most regions while showing minimal impacts on the mean state. Our findings identify the divergent effects of ETPhy on the mean state and interannual variability of water availability under elevated CO2, as important in future climate projections. |
| WOS关键词 | EARTH SYSTEM MODEL ; CLIMATE ; DROUGHT ; RESPONSES ; CARBON ; DEMAND ; CYCLE |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:001237222700001 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/205310]  |
| 专题 | 陆地水循环及地表过程院重点实验室_外文论文 |
| 通讯作者 | Sun, Fubao |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Ziwei,Sun, Fubao,Liu, Wenbin,et al. Divergent Impacts of Evapotranspiration by Plant CO2 Physiological Forcing on the Mean and Variability of Water Availability[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2024,129(11):e2023JD040253. |
| APA | Li, Ziwei.,Sun, Fubao.,Liu, Wenbin.,Wang, Hong.,Wang, Tingting.,...&Tang, Senlin.(2024).Divergent Impacts of Evapotranspiration by Plant CO2 Physiological Forcing on the Mean and Variability of Water Availability.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,129(11),e2023JD040253. |
| MLA | Li, Ziwei,et al."Divergent Impacts of Evapotranspiration by Plant CO2 Physiological Forcing on the Mean and Variability of Water Availability".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 129.11(2024):e2023JD040253. |
入库方式： OAI收割
来源：地理科学与资源研究所
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