Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.3390/w13243531 |
Licence  |
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| Title (Primary) | Applicability of difference in oxygen-18 and deuterium of water sources and isotopic hydrograph separation in a bamboo catchment during different rainfall types |
| Author | You, Y.; Qu, S.; Wang, Y.; Yang, Q.; Shi, P.; Jiang, Y.; Yang, X. |
| Source Titel | Water |
| Year | 2021 |
| Department | ASAM |
| Volume | 13 |
| Issue | 24 |
| Page From | art. 3531 |
| Language | englisch |
| Topic | T5 Future Landscapes |
| Keywords | δ18O and δD isotopes; temporal variations during event; plum rain; typhoon; isotopic hydrograph separation; water sources |
| Abstract | Typhoon storm and plum rain are two typical rainfall types in the lower regions of the Yangtze River Basin, which frequently cause flood disasters in China. New information in stable water isotopes offers the opportunity to advance understanding of runoff mechanisms and water source dynamics in response to these two typical rainfall types. We intensively monitored two representative rainfall events in a small bamboo forestry watershed in 2016. Results showed that precipitation isotopic variations during the event were generally larger than those of other monitored compartments (including throughfall, surface overland water, groundwater and river water) and also larger for the plum rain than for the typhoon event (δ18O varied in 5.2‰ and 3.7‰, respectively). Importantly, the differences of isotopic temporal variation between rainfall and throughfall showed significant impacts on the two-component hydrograph separation for both rainfall types (e.g., if not considered, the pre-event water fractions were 26.6% and 15.3% higher for the typhoon and plum rain events, respectively). Furthermore, we evaluated the role of soil water on the three-component isotopic hydrograph separation model; results revealed that soil water accounted for 10.9% and 28.3% of the total discharge in typhoon and plum rain events, respectively. This underpins the important role of soil water dynamics during the rainy season in this humid region. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=25589 |
| You, Y., Qu, S., Wang, Y., Yang, Q., Shi, P., Jiang, Y., Yang, X. (2021): Applicability of difference in oxygen-18 and deuterium of water sources and isotopic hydrograph separation in a bamboo catchment during different rainfall types Water 13 (24), art. 3531 10.3390/w13243531 |
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