Global critical soil moisture thresholds of plant water stress
文献类型：期刊论文
| 作者 | Fu, Zheng6,10; Ciais, Philippe10; Wigneron, Jean-Pierre9; Gentine, Pierre8; Feldman, Andrew F.7,17; Makowski, David1; Viovy, Nicolas10; Kemanian, Armen R.16; Goll, Daniel S.10; Stoy, Paul C.15 |
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2024-06-06 |
| 卷号 | 15期号:1页码:4826 |
| DOI | 10.1038/s41467-024-49244-7 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | During extensive periods without rain, known as dry-downs, decreasing soil moisture (SM) induces plant water stress at the point when it limits evapotranspiration, defining a critical SM threshold (theta crit). Better quantification of theta crit is needed for improving future projections of climate and water resources, food production, and ecosystem vulnerability. Here, we combine systematic satellite observations of the diurnal amplitude of land surface temperature (dLST) and SM during dry-downs, corroborated by in-situ data from flux towers, to generate the observation-based global map of theta crit. We find an average global theta crit of 0.19 m3/m3, varying from 0.12 m3/m3 in arid ecosystems to 0.26 m3/m3 in humid ecosystems. theta crit simulated by Earth System Models is overestimated in dry areas and underestimated in wet areas. The global observed pattern of theta crit reflects plant adaptation to soil available water and atmospheric demand. Using explainable machine learning, we show that aridity index, leaf area and soil texture are the most influential drivers. Moreover, we show that the annual fraction of days with water stress, when SM stays below theta crit, has increased in the past four decades. Our results have important implications for understanding the inception of water stress in models and identifying SM tipping points. Using systematic satellite observations of land surface temperature and soil moisture during soil dry-downs, the spatially-explicit global distribution of the critical soil moisture threshold of plant water stress and its drivers is uncovered. |
| WOS关键词 | LAND-SURFACE TEMPERATURE ; HYDRAULIC CONDUCTIVITY ; VEGETATION ; CLIMATE ; VARIABILITY ; SATELLITE ; MODELS ; RAINFALL ; DROUGHT ; WEATHER |
| WOS研究方向 | Science & Technology - Other Topics |
| WOS记录号 | WOS:001240998200005 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/206144]  |
| 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 | Fu, Zheng |
| 作者单位 | 1.Univ Paris Saclay, Unit Appl Math & Comp Sci, AgroParisTech, UMR MIA PS INRAE, F-91120 Palaiseau, France 2.Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ USA 3.Peking Univ, Shenzhen Grad Sch, Shenzhen 518055, Guangdong, Peoples R China 4.Seoul Natl Univ, Res Inst Agr & Life Sci, Seoul, South Korea 5.Univ Hong Kong, Dept Geog, Hong Kong, Peoples R China 6.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 7.NASA, Goddard Space Flight Ctr, Biospher Sci Lab, Greenbelt, MD 20771 USA 8.Columbia Univ, Dept Earth & Environm Engn, New York, NY 10027 USA 9.Univ Bordeaux, ISPA, INRAE, Bordeaux Sci Agro, F-33140 Villenave Dornon, France 10.Univ Paris Saclay, LSCE IPSL, CEA CNRS UVSQ, Lab Sci Climat & Environm, F-91191 Gif Sur Yvette, France |
| 推荐引用方式 GB/T 7714 | Fu, Zheng,Ciais, Philippe,Wigneron, Jean-Pierre,et al. Global critical soil moisture thresholds of plant water stress[J]. NATURE COMMUNICATIONS,2024,15(1):4826. |
| APA | Fu, Zheng.,Ciais, Philippe.,Wigneron, Jean-Pierre.,Gentine, Pierre.,Feldman, Andrew F..,...&Smith, William K..(2024).Global critical soil moisture thresholds of plant water stress.NATURE COMMUNICATIONS,15(1),4826. |
| MLA | Fu, Zheng,et al."Global critical soil moisture thresholds of plant water stress".NATURE COMMUNICATIONS 15.1(2024):4826. |
入库方式： OAI收割
来源：地理科学与资源研究所
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