Inferring the seasonal origins of the plant (Cinnamomum camphora) and soil water from precipitation by stable isotope techniques in the East Asian monsoon region
Study region: From 2017 to 2019, xylem and leaf samples of Cinnamomum camphora were sampled and soil water samples at 0–100 cm depth were sampled 65 times simultaneously in a typical East Asian monsoon region. Study focus: The seasonal origin of plant and soil water from precipitation was inferred b...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-04-01
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| Series: | Journal of Hydrology: Regional Studies |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581824000387 |
| _version_ | 1797246778034094080 |
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| author | Xiong Xiao Xinping Zhang Junjie Dai Xinguang He Zhiguo Rao Cicheng Zhang Na Liu Jiajie Li |
| author_facet | Xiong Xiao Xinping Zhang Junjie Dai Xinguang He Zhiguo Rao Cicheng Zhang Na Liu Jiajie Li |
| author_sort | Xiong Xiao |
| collection | DOAJ |
| description | Study region: From 2017 to 2019, xylem and leaf samples of Cinnamomum camphora were sampled and soil water samples at 0–100 cm depth were sampled 65 times simultaneously in a typical East Asian monsoon region. Study focus: The seasonal origin of plant and soil water from precipitation was inferred based on the stable isotope techniques, including the evaporation line slope (SEL) estimations and the seasonal origin index (SOI) calculation. New hydrological insights for the region: The regression SEL of leaf water was close to the theoretical SELs estimated based on the Craig–Gordon model, but xylem water and soil water showed higher regression SELs than the theoretical SELs, this may be due to the seasonality of the precipitation isotopes and evaporative fractionation. The fractionation-compensated isotopic values calculated based on the theoretical SELs of different water types were close, with the differences within 2.4‰ for δ18O and 20.0‰ for δ2H of each other, and the uncertainty of the fractionation-compensated isotopic values was low enough in the calculation of SOI. The SOI results showed that summer precipitation was more prevalent in plant and soil water, and more winter precipitation may recharge runoff when evapotranspiration demand is weak. Overall, the leaf sampling and the theoretical method have the potential to infer the seasonal water origin over a relatively long period. |
| first_indexed | 2024-03-08T05:54:18Z |
| format | Article |
| id | doaj.art-21d1b4cd4c624b9f9de83a52d36d18d8 |
| institution | Directory Open Access Journal |
| issn | 2214-5818 |
| language | English |
| last_indexed | 2024-04-24T19:48:12Z |
| publishDate | 2024-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj.art-21d1b4cd4c624b9f9de83a52d36d18d82024-03-25T04:17:37ZengElsevierJournal of Hydrology: Regional Studies2214-58182024-04-0152101690Inferring the seasonal origins of the plant (Cinnamomum camphora) and soil water from precipitation by stable isotope techniques in the East Asian monsoon regionXiong Xiao0Xinping Zhang1Junjie Dai2Xinguang He3Zhiguo Rao4Cicheng Zhang5Na Liu6Jiajie Li7College of Geographic Science, Hunan Normal University, Changsha, China; Key Laboratory of Geospatial Big Data Mining and Applications in Hunan Province, Hunan Normal University, Changsha, ChinaCollege of Geographic Science, Hunan Normal University, Changsha, China; Key Laboratory of Geospatial Big Data Mining and Applications in Hunan Province, Hunan Normal University, Changsha, China; Corresponding author at: College of Geographic Science, Hunan Normal University, Changsha, China.College of Geographic Science, Hunan Normal University, Changsha, ChinaCollege of Geographic Science, Hunan Normal University, Changsha, China; Key Laboratory of Geospatial Big Data Mining and Applications in Hunan Province, Hunan Normal University, Changsha, ChinaCollege of Geographic Science, Hunan Normal University, Changsha, ChinaCollege of Geographic Science, Hunan Normal University, Changsha, ChinaCollege of Geography and Tourism, Hengyang Normal University, Hunan Province, Hengyang, ChinaCollege of Geographic Science, Hunan Normal University, Changsha, ChinaStudy region: From 2017 to 2019, xylem and leaf samples of Cinnamomum camphora were sampled and soil water samples at 0–100 cm depth were sampled 65 times simultaneously in a typical East Asian monsoon region. Study focus: The seasonal origin of plant and soil water from precipitation was inferred based on the stable isotope techniques, including the evaporation line slope (SEL) estimations and the seasonal origin index (SOI) calculation. New hydrological insights for the region: The regression SEL of leaf water was close to the theoretical SELs estimated based on the Craig–Gordon model, but xylem water and soil water showed higher regression SELs than the theoretical SELs, this may be due to the seasonality of the precipitation isotopes and evaporative fractionation. The fractionation-compensated isotopic values calculated based on the theoretical SELs of different water types were close, with the differences within 2.4‰ for δ18O and 20.0‰ for δ2H of each other, and the uncertainty of the fractionation-compensated isotopic values was low enough in the calculation of SOI. The SOI results showed that summer precipitation was more prevalent in plant and soil water, and more winter precipitation may recharge runoff when evapotranspiration demand is weak. Overall, the leaf sampling and the theoretical method have the potential to infer the seasonal water origin over a relatively long period.http://www.sciencedirect.com/science/article/pii/S2214581824000387Stable isotopesSeasonal origin indexXylem waterLeaf waterSoil water |
| spellingShingle | Xiong Xiao Xinping Zhang Junjie Dai Xinguang He Zhiguo Rao Cicheng Zhang Na Liu Jiajie Li Inferring the seasonal origins of the plant (Cinnamomum camphora) and soil water from precipitation by stable isotope techniques in the East Asian monsoon region Journal of Hydrology: Regional Studies Stable isotopes Seasonal origin index Xylem water Leaf water Soil water |
| title | Inferring the seasonal origins of the plant (Cinnamomum camphora) and soil water from precipitation by stable isotope techniques in the East Asian monsoon region |
| title_full | Inferring the seasonal origins of the plant (Cinnamomum camphora) and soil water from precipitation by stable isotope techniques in the East Asian monsoon region |
| title_fullStr | Inferring the seasonal origins of the plant (Cinnamomum camphora) and soil water from precipitation by stable isotope techniques in the East Asian monsoon region |
| title_full_unstemmed | Inferring the seasonal origins of the plant (Cinnamomum camphora) and soil water from precipitation by stable isotope techniques in the East Asian monsoon region |
| title_short | Inferring the seasonal origins of the plant (Cinnamomum camphora) and soil water from precipitation by stable isotope techniques in the East Asian monsoon region |
| title_sort | inferring the seasonal origins of the plant cinnamomum camphora and soil water from precipitation by stable isotope techniques in the east asian monsoon region |
| topic | Stable isotopes Seasonal origin index Xylem water Leaf water Soil water |
| url | http://www.sciencedirect.com/science/article/pii/S2214581824000387 |
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