Spatiotemporal variation of water cycle components in Minjiang River Basin based on a correction method for evapotranspiration products
Study region: Minjiang River Basin of China. Study focus: This paper aimed to study the spatiotemporal changes in water cycle components including evapotranspiration (ET) and terrestrial water storage in a watershed. To achieve this, we proposed a method that is based on the water balance and utiliz...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Journal of Hydrology: Regional Studies |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581823002628 |
| _version_ | 1797390462504402944 |
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| author | Meiling Zheng Xingwei Chen Weifang Ruan Huaxia Yao Zipeng Gu Kaili Geng Xiaocheng Li Haijun Deng Ying Chen Meibing Liu |
| author_facet | Meiling Zheng Xingwei Chen Weifang Ruan Huaxia Yao Zipeng Gu Kaili Geng Xiaocheng Li Haijun Deng Ying Chen Meibing Liu |
| author_sort | Meiling Zheng |
| collection | DOAJ |
| description | Study region: Minjiang River Basin of China. Study focus: This paper aimed to study the spatiotemporal changes in water cycle components including evapotranspiration (ET) and terrestrial water storage in a watershed. To achieve this, we proposed a method that is based on the water balance and utilizes measured annual precipitation and runoff data to correct ET products. Subsequently, we derived the annual terrestrial water storage changes and performed trend analysis on the water cycle components by the Mann-Kendall trend test. New hydrological insights for the region: (1) The Global Land Data Assimilation System (GLDAS) product overestimated ET from 2000 to 2019 in the Minjiang River Basin (MJB), which was 105.18 mm higher than ET. Through sub-basin validation, the relative error between the corrected ET and the ET is less than 5.1%. The proposed method can construct a reasonable annual dataset of water cycle components. (2) From 2000–2019, the Minjiang River Basin witnessed non-significant increasing trends in precipitation and runoff. However, significant growth was observed in ET, indicated by a Mann-Kendall trend test Z-value of 2.63. The variation in ET was primarily influenced by the normalized difference vegetation index (NDVI) (correlation coefficients of 0.37) and temperature (correlation coefficients of 0.48). The terrestrial water storage change fluctuated between − 400 and 355 mm. The relationships among the water cycle components, as represented by the runoff coefficient and evapotranspiration coefficient show non-significant changing trends. Both displayed a non-significant decreasing trend. From 2000–2019, the water cycle process remained relatively stable under changing environments in the MJB. |
| first_indexed | 2024-03-08T23:12:13Z |
| format | Article |
| id | doaj.art-2005b66337324acc8d6f93e58f7113c9 |
| institution | Directory Open Access Journal |
| issn | 2214-5818 |
| language | English |
| last_indexed | 2024-03-08T23:12:13Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj.art-2005b66337324acc8d6f93e58f7113c92023-12-15T07:24:18ZengElsevierJournal of Hydrology: Regional Studies2214-58182023-12-0150101575Spatiotemporal variation of water cycle components in Minjiang River Basin based on a correction method for evapotranspiration productsMeiling Zheng0Xingwei Chen1Weifang Ruan2Huaxia Yao3Zipeng Gu4Kaili Geng5Xiaocheng Li6Haijun Deng7Ying Chen8Meibing Liu9School of Geographical Science, Fujian Normal University, Fuzhou 350117, ChinaSchool of Geographical Science, Fujian Normal University, Fuzhou 350117, China; Fujian Province Engineering Research Center for Monitoring and Assessing Terrestrial Disasters, Fuzhou 350117, China; State Key Laboratory Breeding Base of Humid Subtropical Mountain Ecology, Fuzhou 350117, China; Corresponding author at: School of Geographical Science, Fujian Normal University, Fuzhou 350117, China.Fujian Institute of Water Resources & Hydropower Research, Fuzhou 350001, ChinaDepartment of Geography, Nipissing University, North Bay, Ontario, CanadaSchool of Geographical Science, Fujian Normal University, Fuzhou 350117, ChinaSchool of Geographical Science, Fujian Normal University, Fuzhou 350117, ChinaFujian Institute of Water Resources & Hydropower Research, Fuzhou 350001, ChinaSchool of Geographical Science, Fujian Normal University, Fuzhou 350117, ChinaSchool of Geographical Science, Fujian Normal University, Fuzhou 350117, ChinaSchool of Geographical Science, Fujian Normal University, Fuzhou 350117, ChinaStudy region: Minjiang River Basin of China. Study focus: This paper aimed to study the spatiotemporal changes in water cycle components including evapotranspiration (ET) and terrestrial water storage in a watershed. To achieve this, we proposed a method that is based on the water balance and utilizes measured annual precipitation and runoff data to correct ET products. Subsequently, we derived the annual terrestrial water storage changes and performed trend analysis on the water cycle components by the Mann-Kendall trend test. New hydrological insights for the region: (1) The Global Land Data Assimilation System (GLDAS) product overestimated ET from 2000 to 2019 in the Minjiang River Basin (MJB), which was 105.18 mm higher than ET. Through sub-basin validation, the relative error between the corrected ET and the ET is less than 5.1%. The proposed method can construct a reasonable annual dataset of water cycle components. (2) From 2000–2019, the Minjiang River Basin witnessed non-significant increasing trends in precipitation and runoff. However, significant growth was observed in ET, indicated by a Mann-Kendall trend test Z-value of 2.63. The variation in ET was primarily influenced by the normalized difference vegetation index (NDVI) (correlation coefficients of 0.37) and temperature (correlation coefficients of 0.48). The terrestrial water storage change fluctuated between − 400 and 355 mm. The relationships among the water cycle components, as represented by the runoff coefficient and evapotranspiration coefficient show non-significant changing trends. Both displayed a non-significant decreasing trend. From 2000–2019, the water cycle process remained relatively stable under changing environments in the MJB.http://www.sciencedirect.com/science/article/pii/S2214581823002628Evapotranspiration productComponents of water cycleWater balanceSpatiotemporal changes |
| spellingShingle | Meiling Zheng Xingwei Chen Weifang Ruan Huaxia Yao Zipeng Gu Kaili Geng Xiaocheng Li Haijun Deng Ying Chen Meibing Liu Spatiotemporal variation of water cycle components in Minjiang River Basin based on a correction method for evapotranspiration products Journal of Hydrology: Regional Studies Evapotranspiration product Components of water cycle Water balance Spatiotemporal changes |
| title | Spatiotemporal variation of water cycle components in Minjiang River Basin based on a correction method for evapotranspiration products |
| title_full | Spatiotemporal variation of water cycle components in Minjiang River Basin based on a correction method for evapotranspiration products |
| title_fullStr | Spatiotemporal variation of water cycle components in Minjiang River Basin based on a correction method for evapotranspiration products |
| title_full_unstemmed | Spatiotemporal variation of water cycle components in Minjiang River Basin based on a correction method for evapotranspiration products |
| title_short | Spatiotemporal variation of water cycle components in Minjiang River Basin based on a correction method for evapotranspiration products |
| title_sort | spatiotemporal variation of water cycle components in minjiang river basin based on a correction method for evapotranspiration products |
| topic | Evapotranspiration product Components of water cycle Water balance Spatiotemporal changes |
| url | http://www.sciencedirect.com/science/article/pii/S2214581823002628 |
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