Analysis for Hydrological Regime of the Lower Reaches of Geheyan Reservoir Based on IHA-RVA Method
In order to evaluate quantitatively the change of ecological and hydrological regime of the lower reaches of Geheyan reservoir,based on the daily flow data of Changyang hydrological station from 1951 to 2010,this paper analyzes the flow trend with the non-parameter Mann-Kendall trend test,and the ab...
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Editorial Office of Pearl River
2020-01-01
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| Series: | Renmin Zhujiang |
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| Online Access: | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.11.001 |
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| author | TU Yulyu LI Yinghai GUO Jiali NIE Panpan |
| author_facet | TU Yulyu LI Yinghai GUO Jiali NIE Panpan |
| author_sort | TU Yulyu |
| collection | DOAJ |
| description | In order to evaluate quantitatively the change of ecological and hydrological regime of the lower reaches of Geheyan reservoir,based on the daily flow data of Changyang hydrological station from 1951 to 2010,this paper analyzes the flow trend with the non-parameter Mann-Kendall trend test,and the abrupt change points by Mann-Kendall test,moving t test and ordered clustering,and then comprehensively evaluates the ecological and hydrological changes of Changyang section at the lower reaches of the Geheyan reservoir with IHA-RVA (indicators of hydrologic alteration and range of variability approach) and hydrological alteration degree evaluation.The results show that:The annual average runoff of Changyang station shows unobvious downward trend.In 2000,there was an abrupt change.In overall,the hydrological regime is featured with 58% of moderate change,and indicators with the most obvious change are the base flow index,time of annual minimum flow,duration of low flow pulse and number of reversals,which can provide reference for water ecological protection of Qingjiang River Basin. |
| format | Article |
| id | doaj-art-6b09c002049e4ba38271164795b3fdc6 |
| institution | Kabale University |
| issn | 1001-9235 |
| language | zho |
| publishDate | 2020-01-01 |
| publisher | Editorial Office of Pearl River |
| record_format | Article |
| series | Renmin Zhujiang |
| spelling | doaj-art-6b09c002049e4ba38271164795b3fdc62025-01-15T02:29:33ZzhoEditorial Office of Pearl RiverRenmin Zhujiang1001-92352020-01-014147648580Analysis for Hydrological Regime of the Lower Reaches of Geheyan Reservoir Based on IHA-RVA MethodTU YulyuLI YinghaiGUO JialiNIE PanpanIn order to evaluate quantitatively the change of ecological and hydrological regime of the lower reaches of Geheyan reservoir,based on the daily flow data of Changyang hydrological station from 1951 to 2010,this paper analyzes the flow trend with the non-parameter Mann-Kendall trend test,and the abrupt change points by Mann-Kendall test,moving t test and ordered clustering,and then comprehensively evaluates the ecological and hydrological changes of Changyang section at the lower reaches of the Geheyan reservoir with IHA-RVA (indicators of hydrologic alteration and range of variability approach) and hydrological alteration degree evaluation.The results show that:The annual average runoff of Changyang station shows unobvious downward trend.In 2000,there was an abrupt change.In overall,the hydrological regime is featured with 58% of moderate change,and indicators with the most obvious change are the base flow index,time of annual minimum flow,duration of low flow pulse and number of reversals,which can provide reference for water ecological protection of Qingjiang River Basin.http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.11.001IHA-RVAecological hydrologydegree of hydrologic alterationGeheyan reservoir |
| spellingShingle | TU Yulyu LI Yinghai GUO Jiali NIE Panpan Analysis for Hydrological Regime of the Lower Reaches of Geheyan Reservoir Based on IHA-RVA Method Renmin Zhujiang IHA-RVA ecological hydrology degree of hydrologic alteration Geheyan reservoir |
| title | Analysis for Hydrological Regime of the Lower Reaches of Geheyan Reservoir Based on IHA-RVA Method |
| title_full | Analysis for Hydrological Regime of the Lower Reaches of Geheyan Reservoir Based on IHA-RVA Method |
| title_fullStr | Analysis for Hydrological Regime of the Lower Reaches of Geheyan Reservoir Based on IHA-RVA Method |
| title_full_unstemmed | Analysis for Hydrological Regime of the Lower Reaches of Geheyan Reservoir Based on IHA-RVA Method |
| title_short | Analysis for Hydrological Regime of the Lower Reaches of Geheyan Reservoir Based on IHA-RVA Method |
| title_sort | analysis for hydrological regime of the lower reaches of geheyan reservoir based on iha rva method |
| topic | IHA-RVA ecological hydrology degree of hydrologic alteration Geheyan reservoir |
| url | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.11.001 |
| work_keys_str_mv | AT tuyulyu analysisforhydrologicalregimeofthelowerreachesofgeheyanreservoirbasedoniharvamethod AT liyinghai analysisforhydrologicalregimeofthelowerreachesofgeheyanreservoirbasedoniharvamethod AT guojiali analysisforhydrologicalregimeofthelowerreachesofgeheyanreservoirbasedoniharvamethod AT niepanpan analysisforhydrologicalregimeofthelowerreachesofgeheyanreservoirbasedoniharvamethod |