Water balance analysis of hydrological processes in cyclic irrigation: A case study of the Imbanuma irrigation area in Chiba, Japan
Study region: Flat, low-lying paddy fields subjected to cyclic irrigation in Chiba, Japan.Study focus: This study investigated hydrological processes in flat, low-lying paddy fields with cyclic irrigation. From 2021–2022, the climatic conditions, operation of pumping stations, and surface drainage w...
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Elsevier
2025-02-01
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| Series: | Journal of Hydrology: Regional Studies |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581824004609 |
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| author | Fumi Okura Asuka Kamei Tasuku Kato |
| author_facet | Fumi Okura Asuka Kamei Tasuku Kato |
| author_sort | Fumi Okura |
| collection | DOAJ |
| description | Study region: Flat, low-lying paddy fields subjected to cyclic irrigation in Chiba, Japan.Study focus: This study investigated hydrological processes in flat, low-lying paddy fields with cyclic irrigation. From 2021–2022, the climatic conditions, operation of pumping stations, and surface drainage were monitored. The water balance was analyzed to comprehend discharge conditions using Acoustic Doppler Current Profiler (ADCP) monitoring. The dynamic hydrological relationship between surface and lateral flow discharge is discussed. Water and lateral flow use efficiencies were also evaluated to examine the applicability of cyclic irrigation in preserving natural water bodies.New hydrological insights for the region: The relatively wet year (791 mm/period) of 2021 maintained higher lateral flow (1438 mm in the North block, 1363 mm in the South block) from paddy plots, with discharge processes primarily influenced by surface water levels. Conversely, in the relatively dry year (410 mm/period) of 2022, lower drainage water levels due to limited rainfall, facilitated a quick response of the lateral flow (851 mm in the North block, 917 mm in the South block) in the discharge processes. During the drought in 2022, water use efficiency increased by 11–13 %, while the cyclic water use ratio decreased by 9 %, indicating a significant contribution of lateral flow reuse in cyclic irrigation. These findings suggest that hydrological processes in flat, low-lying paddy field areas should be considered in irrigation management, and cyclic irrigation may influence hydrological processes by conserving renewable water resources. |
| format | Article |
| id | doaj-art-de0adb4f2966412f97f10da04c8dca94 |
| institution | Kabale University |
| issn | 2214-5818 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj-art-de0adb4f2966412f97f10da04c8dca942025-01-22T05:42:04ZengElsevierJournal of Hydrology: Regional Studies2214-58182025-02-0157102111Water balance analysis of hydrological processes in cyclic irrigation: A case study of the Imbanuma irrigation area in Chiba, JapanFumi Okura0Asuka Kamei1Tasuku Kato2Japan International Research Center for Agricultural Sciences, 1-1 Ohwashi, Tsukuba, Ibaraki 305-8686, JapanInbanuma Phase 2 Agricultural Irrigation Project Office, Kanto Regional Agricultural Administration Office, 28 Miyakojimachi, Sakura, Chiba 2885-0016, JapanInstitute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu, Tokyo 183-8509, Japan; Corresponding author.Study region: Flat, low-lying paddy fields subjected to cyclic irrigation in Chiba, Japan.Study focus: This study investigated hydrological processes in flat, low-lying paddy fields with cyclic irrigation. From 2021–2022, the climatic conditions, operation of pumping stations, and surface drainage were monitored. The water balance was analyzed to comprehend discharge conditions using Acoustic Doppler Current Profiler (ADCP) monitoring. The dynamic hydrological relationship between surface and lateral flow discharge is discussed. Water and lateral flow use efficiencies were also evaluated to examine the applicability of cyclic irrigation in preserving natural water bodies.New hydrological insights for the region: The relatively wet year (791 mm/period) of 2021 maintained higher lateral flow (1438 mm in the North block, 1363 mm in the South block) from paddy plots, with discharge processes primarily influenced by surface water levels. Conversely, in the relatively dry year (410 mm/period) of 2022, lower drainage water levels due to limited rainfall, facilitated a quick response of the lateral flow (851 mm in the North block, 917 mm in the South block) in the discharge processes. During the drought in 2022, water use efficiency increased by 11–13 %, while the cyclic water use ratio decreased by 9 %, indicating a significant contribution of lateral flow reuse in cyclic irrigation. These findings suggest that hydrological processes in flat, low-lying paddy field areas should be considered in irrigation management, and cyclic irrigation may influence hydrological processes by conserving renewable water resources.http://www.sciencedirect.com/science/article/pii/S2214581824004609Water balanceHydrological processesCyclic irrigationPaddy fields |
| spellingShingle | Fumi Okura Asuka Kamei Tasuku Kato Water balance analysis of hydrological processes in cyclic irrigation: A case study of the Imbanuma irrigation area in Chiba, Japan Journal of Hydrology: Regional Studies Water balance Hydrological processes Cyclic irrigation Paddy fields |
| title | Water balance analysis of hydrological processes in cyclic irrigation: A case study of the Imbanuma irrigation area in Chiba, Japan |
| title_full | Water balance analysis of hydrological processes in cyclic irrigation: A case study of the Imbanuma irrigation area in Chiba, Japan |
| title_fullStr | Water balance analysis of hydrological processes in cyclic irrigation: A case study of the Imbanuma irrigation area in Chiba, Japan |
| title_full_unstemmed | Water balance analysis of hydrological processes in cyclic irrigation: A case study of the Imbanuma irrigation area in Chiba, Japan |
| title_short | Water balance analysis of hydrological processes in cyclic irrigation: A case study of the Imbanuma irrigation area in Chiba, Japan |
| title_sort | water balance analysis of hydrological processes in cyclic irrigation a case study of the imbanuma irrigation area in chiba japan |
| topic | Water balance Hydrological processes Cyclic irrigation Paddy fields |
| url | http://www.sciencedirect.com/science/article/pii/S2214581824004609 |
| work_keys_str_mv | AT fumiokura waterbalanceanalysisofhydrologicalprocessesincyclicirrigationacasestudyoftheimbanumairrigationareainchibajapan AT asukakamei waterbalanceanalysisofhydrologicalprocessesincyclicirrigationacasestudyoftheimbanumairrigationareainchibajapan AT tasukukato waterbalanceanalysisofhydrologicalprocessesincyclicirrigationacasestudyoftheimbanumairrigationareainchibajapan |