Global distribution and changes of leaf-level intrinsic water use efficiency and their responses to water stress
文献类型：期刊论文
| 作者 | Wang, Xiang19; Fu, Zheng19; Ciais, Philippe18; Wang, Lixin17; Buchmann, Nina16; Keenan, Trevor F.14,15; De Kauwe, Martin13; Penuelas, Josep11,12; Chen, Guo10; Gong, Xiaoying9 |
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2026-01-07 |
| 卷号 | 17期号:1页码:1530 |
| DOI | 10.1038/s41467-025-68252-9 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Intrinsic water use efficiency (iWUE) at the leaf level measures water expenditures by terestrial plants during photosynthesis, yet its global spatiotemporal dynamics and responses to water stress remain poorly understood. Using machine-learning models and carbon isotope observations in C3 foliage, here we elucidate global patterns, trends, and water-stress responses of leaf iWUE. We find high iWUE in cold, arid regions and lower values in warm, humid areas. From 2001 to 2020, global iWUE increases at 0.2 +/- 0.02 mu mol mol-1 year-1, with strong biome specific differences. Grasslands exhibit the highest mean iWUE but the slowest increase, whereas evergreen broadleaf forests show the lowest iWUE yet the fastest increase. iWUE rises with increasing water stress, but the rate of growth diminishes as water stress intensifies. Vapor pressure deficit influence iWUE more broadly than soil moisture. The ecological optimality model reproduces the spatial patterns of leaf iWUE and identifies vapor pressure deficit as the dominant driver, but overestimates mean iWUE and its trend. Our findings suggest that increasing water stress may slow the rate of global iWUE increase as the climate continues to warm. |
| URL标识 | 查看原文 |
| WOS关键词 | CARBON-ISOTOPE DISCRIMINATION ; GAS-EXCHANGE ; ELEVATED CO2 ; PHOTOSYNTHETIC RESPONSES ; C-13 DISCRIMINATION ; ATMOSPHERIC DEMAND ; ECOSYSTEM WATER ; TEMPERATURE ; DIOXIDE ; LAND |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:001686408800001 |
| 出版者 | NATURE PORTFOLIO |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/221077]  |
| 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.Tsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China; 2.Beijing Normal Univ, Coll Water Sci, Beijing, Peoples R China 3.Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ USA; 4.Univ Paris Saclay, Unit Appl Math & Comp Sci UMR MIA PS, INRAE, AgroParisTech, Palaiseau, France; 5.Univ Wisconsin, Dept Biol Syst Engn, Madison, WI USA; 6.Univ Western Australia, Sch Engn, Perth, WA, Australia; 7.Sun Yat Sen Univ, Sch Geog & Planning, Guangzhou, Peoples R China; 8.Univ New Hampshire, Earth Syst Res Ctr, Inst Study Earth Oceans & Space, Durham, NH USA; 9.Fujian Normal Univ, Coll Geog Sci, Key Lab Subtrop Mt Ecol, Fuzhou, Peoples R China; 10.Chengdu Univ Technol, Coll Ecol & Environm, Chengdu, Sichuan, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Wang, Xiang,Fu, Zheng,Ciais, Philippe,et al. Global distribution and changes of leaf-level intrinsic water use efficiency and their responses to water stress[J]. NATURE COMMUNICATIONS,2026,17(1):1530. |
| APA | Wang, Xiang.,Fu, Zheng.,Ciais, Philippe.,Wang, Lixin.,Buchmann, Nina.,...&Niu, Shuli.(2026).Global distribution and changes of leaf-level intrinsic water use efficiency and their responses to water stress.NATURE COMMUNICATIONS,17(1),1530. |
| MLA | Wang, Xiang,et al."Global distribution and changes of leaf-level intrinsic water use efficiency and their responses to water stress".NATURE COMMUNICATIONS 17.1(2026):1530. |
入库方式： OAI收割
来源：地理科学与资源研究所
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