The Partitioning of Catchment Evapotranspiration Fluxes as Revealed by Stable Isotope Signals in the Alpine Inland River Basin
Evapotranspiration is an important process in the water budget of an ecosystem. Quantifying the components of evapotranspiration is of great significance in revealing the ecohydrological process of alpine inland river basins. In this study, the evapotranspiration fluxes in the Shaliu River basin wer...
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MDPI AG
2022-03-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/14/5/790 |
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| author | Zhigang Wang Shengkui Cao Guangchao Cao Yaofang Hou Youcai Wang Ligang Kang |
| author_facet | Zhigang Wang Shengkui Cao Guangchao Cao Yaofang Hou Youcai Wang Ligang Kang |
| author_sort | Zhigang Wang |
| collection | DOAJ |
| description | Evapotranspiration is an important process in the water budget of an ecosystem. Quantifying the components of evapotranspiration is of great significance in revealing the ecohydrological process of alpine inland river basins. In this study, the evapotranspiration fluxes in the Shaliu River basin were classified by hydrogen and oxygen stable isotope technology and remote sensing technology. The results showed the following: (1) The average value of soil fractional evaporation (<i>E</i><sub>1</sub>) in the summer of 2018 and 2019 was 7.59 mm and 2.10 mm, respectively. (2) The average ratio of soil evaporation (<i>E<sub>soil</sub></i>) in the summer of 2018 was 48.82%, 68.11%, 54.99%, respectively. The average ratio of <i>E<sub>soil</sub></i> in the summer of 2019 was 66.86%, 57.50%, 55.53%, respectively. The average value of <i>E<sub>soil</sub></i> in the summer of 2018 and 2019 was 42.84 mm and 35.36 mm, respectively. (3) The average ratio of vegetation transpiration (<i>T</i>) in the summer of 2018 was 51.18%, 31.89%, and 45.01%, respectively. The average ratio of <i>T</i> in the summer of 2019 was 33.14%, 42.50%, and 44.47%, respectively. The average value of <i>T</i> in the summer of 2018 and 2019 was 32.59 mm and 26.23 mm, respectively. Obviously, the soil fractionation was stronger in the summer of 2018 than that in the summer of 2019. At the same time, both soil evaporation and plant transpiration in summer 2018 were higher than those in summer 2019, and soil evaporation in the Shaliu River basin was greater than plant transpiration in summer during the study period. The results of this study can provide data reference for mastering the eco-hydrological process of the Shaliu River basin. |
| first_indexed | 2024-03-09T20:14:58Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T20:14:58Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-dd01f9d5d4584138aab645c308adff2c2023-11-24T00:03:20ZengMDPI AGWater2073-44412022-03-0114579010.3390/w14050790The Partitioning of Catchment Evapotranspiration Fluxes as Revealed by Stable Isotope Signals in the Alpine Inland River BasinZhigang Wang0Shengkui Cao1Guangchao Cao2Yaofang Hou3Youcai Wang4Ligang Kang5Key Laboratory of Tibetan Plateau Land Surface Processes and Ecological Conservation (Ministry of Education), Qinghai Normal University, Xining 810008, ChinaKey Laboratory of Tibetan Plateau Land Surface Processes and Ecological Conservation (Ministry of Education), Qinghai Normal University, Xining 810008, ChinaKey Laboratory of Tibetan Plateau Land Surface Processes and Ecological Conservation (Ministry of Education), Qinghai Normal University, Xining 810008, ChinaKey Laboratory of Tibetan Plateau Land Surface Processes and Ecological Conservation (Ministry of Education), Qinghai Normal University, Xining 810008, ChinaKey Laboratory of Tibetan Plateau Land Surface Processes and Ecological Conservation (Ministry of Education), Qinghai Normal University, Xining 810008, ChinaKey Laboratory of Tibetan Plateau Land Surface Processes and Ecological Conservation (Ministry of Education), Qinghai Normal University, Xining 810008, ChinaEvapotranspiration is an important process in the water budget of an ecosystem. Quantifying the components of evapotranspiration is of great significance in revealing the ecohydrological process of alpine inland river basins. In this study, the evapotranspiration fluxes in the Shaliu River basin were classified by hydrogen and oxygen stable isotope technology and remote sensing technology. The results showed the following: (1) The average value of soil fractional evaporation (<i>E</i><sub>1</sub>) in the summer of 2018 and 2019 was 7.59 mm and 2.10 mm, respectively. (2) The average ratio of soil evaporation (<i>E<sub>soil</sub></i>) in the summer of 2018 was 48.82%, 68.11%, 54.99%, respectively. The average ratio of <i>E<sub>soil</sub></i> in the summer of 2019 was 66.86%, 57.50%, 55.53%, respectively. The average value of <i>E<sub>soil</sub></i> in the summer of 2018 and 2019 was 42.84 mm and 35.36 mm, respectively. (3) The average ratio of vegetation transpiration (<i>T</i>) in the summer of 2018 was 51.18%, 31.89%, and 45.01%, respectively. The average ratio of <i>T</i> in the summer of 2019 was 33.14%, 42.50%, and 44.47%, respectively. The average value of <i>T</i> in the summer of 2018 and 2019 was 32.59 mm and 26.23 mm, respectively. Obviously, the soil fractionation was stronger in the summer of 2018 than that in the summer of 2019. At the same time, both soil evaporation and plant transpiration in summer 2018 were higher than those in summer 2019, and soil evaporation in the Shaliu River basin was greater than plant transpiration in summer during the study period. The results of this study can provide data reference for mastering the eco-hydrological process of the Shaliu River basin.https://www.mdpi.com/2073-4441/14/5/790Shaliu River basinevapotranspirationtemporal and spatial variationRS |
| spellingShingle | Zhigang Wang Shengkui Cao Guangchao Cao Yaofang Hou Youcai Wang Ligang Kang The Partitioning of Catchment Evapotranspiration Fluxes as Revealed by Stable Isotope Signals in the Alpine Inland River Basin Water Shaliu River basin evapotranspiration temporal and spatial variation RS |
| title | The Partitioning of Catchment Evapotranspiration Fluxes as Revealed by Stable Isotope Signals in the Alpine Inland River Basin |
| title_full | The Partitioning of Catchment Evapotranspiration Fluxes as Revealed by Stable Isotope Signals in the Alpine Inland River Basin |
| title_fullStr | The Partitioning of Catchment Evapotranspiration Fluxes as Revealed by Stable Isotope Signals in the Alpine Inland River Basin |
| title_full_unstemmed | The Partitioning of Catchment Evapotranspiration Fluxes as Revealed by Stable Isotope Signals in the Alpine Inland River Basin |
| title_short | The Partitioning of Catchment Evapotranspiration Fluxes as Revealed by Stable Isotope Signals in the Alpine Inland River Basin |
| title_sort | partitioning of catchment evapotranspiration fluxes as revealed by stable isotope signals in the alpine inland river basin |
| topic | Shaliu River basin evapotranspiration temporal and spatial variation RS |
| url | https://www.mdpi.com/2073-4441/14/5/790 |
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