Transpiration Induced Changes in Atmospheric Water Vapor delta O-18 via Isotopic Non-Steady-State Effects on a Subtropical Forest Plantation
文献类型：期刊论文
| 作者 | Lyu, Sidan1; Wang, Jing1,2 |
| 刊名 | WATER
 |
| 出版日期 | 2022-09-01 |
| 卷号 | 14期号:17页码:19 |
| 关键词 | oxygen isotopes transpiration leaf water isotopic enrichment steady-state non-steady-state Peclet effect water vapor isoforcing |
| DOI | 10.3390/w14172648 |
| 通讯作者 | Wang, Jing(wangjing.15b@igsnrr.ac.cn) |
| 英文摘要 | Accurate simulation of oxygen isotopic composition (delta O-18(T)) of transpiration (T) and its contribution via isotopic non-steady-state (NSS) to atmospheric water vapor delta O-18 (delta O-18(v)) still faces great challenges. High-frequency in-situ measurements of delta O-18(v) and evapotranspiration (ET) delta O-18 were conducted for two summer days on a subtropical forest plantation. delta O-18 of xylem, leaf, and soil water at 3 or 4-h intervals was analyzed. Leaf water delta O-18 and delta O-18(T) were estimated using the Craig and Gordon (CG), Dongmann and Farquhar-Cernusak models, and evaporation (E) delta O-18 using the CG model. To quantify the effects of delta O-18(T), delta O-18(E), and delta O-18(ET) on delta O-18(v), T, E, and ET isoforcing was calculated as the product of T, E, and ET fluxes, and the deviation of their delta O-18 from delta O-18(v). Results showed that isotopic steady-state assumption (SS) was satisfied between 12:00 and 15:00. NSS was significant, and delta O-18(T) was underestimated by SS before 12:00 and after 18:00. The Peclet effect was less important to delta O-18(T) simulation than NSS at the canopy level. Due to decreasing atmospheric vertical mixing and the appearance of the inversion layer, contribution from positive T isoforcing increased delta O-18(v) in the morning and at night. During the daytime, the contribution from positive T isoforcing increased first and then decreased due to strong vertical mixing and variability in T rate. |
| WOS关键词 | LEAF WATER ; STABLE-ISOTOPES ; SOIL-WATER ; D-EXCESS ; OXYGEN ; EVAPOTRANSPIRATION ; FLUXES ; TEMPERATURE ; EVAPORATION ; CONDUCTANCE |
| 资助项目 | National Natural Science Foundation of China[42171035] ; National Natural Science Foundation of China[42077302] ; National Natural Science Foundation of China[41830860] ; Open Funding Project of the Key Laboratory of Groundwater Sciences and Engineering, Ministry of Natural Resources[SK20210201] |
| WOS研究方向 | Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000851643900001 |
| 出版者 | MDPI |
| 资助机构 | National Natural Science Foundation of China ; Open Funding Project of the Key Laboratory of Groundwater Sciences and Engineering, Ministry of Natural Resources |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/182752]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Jing |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Minist Nat Resources, Key Lab Groundwater Sci & Engn, Shijiazhuang 050000, Hebei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lyu, Sidan,Wang, Jing. Transpiration Induced Changes in Atmospheric Water Vapor delta O-18 via Isotopic Non-Steady-State Effects on a Subtropical Forest Plantation[J]. WATER,2022,14(17):19. |
| APA | Lyu, Sidan,&Wang, Jing.(2022).Transpiration Induced Changes in Atmospheric Water Vapor delta O-18 via Isotopic Non-Steady-State Effects on a Subtropical Forest Plantation.WATER,14(17),19. |
| MLA | Lyu, Sidan,et al."Transpiration Induced Changes in Atmospheric Water Vapor delta O-18 via Isotopic Non-Steady-State Effects on a Subtropical Forest Plantation".WATER 14.17(2022):19. |
入库方式： OAI收割
来源：地理科学与资源研究所
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