Quantitative contribution of cryogenic vacuum extraction and radial water transport to xylem-source water deuterium offsets
文献类型：期刊论文
| 作者 | Li, Yue1,4; Song, Xianfang1,4; Wang, Lixin2; Sprenger, Matthias3; Ma, Ying1,4 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2024-02-15 |
| 卷号 | 345页码:13 |
| ISSN号 | 0168-1923 |
| 关键词 | Cryogenic vacuum extraction (CVE) Ecohydrology Modified potential water source line (MPWL) Radial water transport (RWT) delta H-2 offsets |
| DOI | 10.1016/j.agrformet.2023.109837 |
| 通讯作者 | Ma, Ying(maying@igsnrr.ac.cn) |
| 英文摘要 | The positions and magnitudes of deuterium offsets between bulk xylem and corresponding source waters are under debate and quantifying them is essential for isotope-based ecohydrological investigations. In this study, stable isotopes (delta H-2, delta O-18, and delta C-13), iteration method, and rehydration experiments were combined to quantitatively determine the magnitude of cryogenic vacuum extraction (CVE)- and radial water transport (RWT)-induced deuterium offsets using one riparian tree species Salix babylonica L. A modified potential water source line (MPWL) was proposed to identify the total delta H-2 offsets between bulk xylem and source waters. The relationships between delta H-2 offsets induced by CVE or RWT and plant water content, leaf delta C-13 values, soil water content (SWC), and the depth to the water table (WTD) were investigated. Results showed that the bulk xylem waters in different tissue positions of S. babylonica showed -7.0 parts per thousand to -4.0 parts per thousand deuterium depletion relative to MPWL at four different sites (p < 0.01). The isotopic compositions of sap water coincided well with MPWL on the dual-isotope plot at the four sites. The CVE- and RWT-induced delta H-2 offsets accounted for 75.1 % and 24.9 % of the total delta H-2 offsets, respectively. The CVE-induced delta H-2 offsets were significantly negatively correlated with plant water content. In comparison, the RWT-induced delta H-2 offsets were negatively related to plant leaf delta C-13 values, trunk water content, and SWC, but positively correlated with WTD. This study provides a quantitative contribution of two major sources of deuterium offsets. The results provide critical insights into isotope-based plant water source identification and evapotranspiration partitioning. |
| WOS关键词 | HYDROGEN ISOTOPE FRACTIONATION ; STABLE-ISOTOPES ; PLANT WATER ; D/H RATIOS ; NONEXCHANGEABLE HYDROGEN ; HYDRAULIC CONDUCTANCE ; TECHNICAL NOTE ; TREES ; CELLULOSE ; OXYGEN |
| 资助项目 | National Key Research and Devel- opment Program of China[2021YFC3201203] ; National Natural Science Foundation of China[42371036] ; National Natural Science Foundation of China[41730749] ; Division of Earth Sciences of the National Sci- ence Foundation[EAR -1554894] |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:001129089100001 |
| 资助机构 | National Key Research and Devel- opment Program of China ; National Natural Science Foundation of China ; Division of Earth Sciences of the National Sci- ence Foundation |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/201432]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Ma, Ying |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Indiana Univ Indianapolis, Dept Earth Sci, Indianapolis, IN 46202 USA 3.Lawrence Berkeley Natl Lab, Earth & Environm Sci, Berkeley, CA 94720 USA 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yue,Song, Xianfang,Wang, Lixin,et al. Quantitative contribution of cryogenic vacuum extraction and radial water transport to xylem-source water deuterium offsets[J]. AGRICULTURAL AND FOREST METEOROLOGY,2024,345:13. |
| APA | Li, Yue,Song, Xianfang,Wang, Lixin,Sprenger, Matthias,&Ma, Ying.(2024).Quantitative contribution of cryogenic vacuum extraction and radial water transport to xylem-source water deuterium offsets.AGRICULTURAL AND FOREST METEOROLOGY,345,13. |
| MLA | Li, Yue,et al."Quantitative contribution of cryogenic vacuum extraction and radial water transport to xylem-source water deuterium offsets".AGRICULTURAL AND FOREST METEOROLOGY 345(2024):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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