Sensitivity of dryland plant water availability to changes in carbon and water fluxes
文献类型：期刊论文
| 作者 | Pei, Yanyan7,8; Dong, Jinwei8; Zhang, Yao1; Yang, Jilin9; Wu, Shuchao2; Gay, Bradley A.3; He, Bin4,5; Xiao, Xiangming6 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2025-12-01 |
| 卷号 | 662页码:133966 |
| ISSN号 | 0022-1694 |
| DOI | 10.1016/j.jhydrol.2025.133966 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | Despite efforts to improve estimations of terrestrial carbon and water fluxes, considerable uncertainties remain in their variations, which can be largely attributed to a poor understanding of water constraints in models. Here, we investigate the effects of three water indicators (atmospheric vapor pressure deficit, VPD; soil water content, SWC; and plant water of land surface water index, LSWI) on interannual and annual variations of carbon and water fluxes (gross primary productivity, GPP; evapotranspiration, ET; and water use efficiency, WUE) in dryland forest, shrubland, grassland, and cropland. We find that LSWI has higher significant Pearson correlations with GPP (r = 0.47), ET (0.43), and WUE (0.33) than SWC (GPP: 0.33; ET: 0.42; WUE: 0.11) and VPD (GPP:-0.34; ET:-0.31; WUE:-0.17), which are almost unaffected by SWC or VPD according to partial correlations. This may be due to that plant water directly controls stomatal conductance, whereas soil water only provides the maximum moisture boundary and atmospheric water further limits the carbon dioxide available for photosynthesis. The correlations of LSWI with GPP, ET, and WUE strengthen 1) from wet to dry conditions, 2) from woody to herbaceous ecosystems, and 3) from daily to 8-day and monthly scales. The ecosystem energy closure and differences in canopy structures and root depths of plants may collectively affect these relationships at various temporal scales and ecosystems. Our findings highlight the higher potential of plant water than atmospheric and soil water in current models for capturing variations of carbon and water fluxes in drylands. |
| URL标识 | 查看原文 |
| WOS关键词 | GROSS PRIMARY PRODUCTION ; ENERGY-BALANCE CLOSURE ; CLIMATE-CHANGE ; INTERANNUAL VARIABILITY ; USE EFFICIENCY ; SOIL-MOISTURE ; TERRESTRIAL ECOSYSTEMS ; ATMOSPHERIC DEMAND ; VEGETATION INDEXES ; GROWTH-RATES |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001552333600001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/215648]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Dong, Jinwei; Xiao, Xiangming |
| 作者单位 | 1.Peking Univ, Sino French Inst Earth Syst Sci, Coll Urban & Environm Sci, Beijing, Peoples R China; 2.Amap Software Co Ltd, Changping Dist Sci & Technol Pk, Beijing 102200, Peoples R China; 3.George Mason Univ, Dept Geog & Geoinformat Sci, 4400 Univ Dr, Fairfax, VA 22030 USA; 4.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Geog Sci Fac, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China; 5.Akesu Natl Stn Observat & Res Oasis Agroecosyst Xi, Akesu 843017, Peoples R China; 6.Univ Oklahoma, Ctr Earth Observat & Modeling, Dept Microbiol & Plant Biol, Norman, OK 73019 USA 7.Minist Emergency Management China, Natl Inst Nat Hazards, Beijing 100085, Peoples R China; 8.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China; 9.China Agr Univ, Coll Grassland Sci & Technol, Beijing 100193, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Pei, Yanyan,Dong, Jinwei,Zhang, Yao,et al. Sensitivity of dryland plant water availability to changes in carbon and water fluxes[J]. JOURNAL OF HYDROLOGY,2025,662:133966. |
| APA | Pei, Yanyan.,Dong, Jinwei.,Zhang, Yao.,Yang, Jilin.,Wu, Shuchao.,...&Xiao, Xiangming.(2025).Sensitivity of dryland plant water availability to changes in carbon and water fluxes.JOURNAL OF HYDROLOGY,662,133966. |
| MLA | Pei, Yanyan,et al."Sensitivity of dryland plant water availability to changes in carbon and water fluxes".JOURNAL OF HYDROLOGY 662(2025):133966. |
入库方式： OAI收割
来源：地理科学与资源研究所
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