Calculation of the Instream Ecological Flow of the Wei River Based on Hydrological Variation
It is of great significance for the watershed management department to reasonably allocate water resources and ensure the sustainable development of river ecosystems. The greatly important issue is to accurately calculate instream ecological flow. In order to precisely compute instream ecological fl...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Journal of Applied Mathematics |
| Online Access: | http://dx.doi.org/10.1155/2014/127067 |
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| author | Shengzhi Huang Jianxia Chang Qiang Huang Yimin Wang Yutong Chen |
| author_facet | Shengzhi Huang Jianxia Chang Qiang Huang Yimin Wang Yutong Chen |
| author_sort | Shengzhi Huang |
| collection | DOAJ |
| description | It is of great significance for the watershed management department to reasonably allocate water resources and ensure the sustainable development of river ecosystems. The greatly important issue is to accurately calculate instream ecological flow. In order to precisely compute instream ecological flow, flow variation is taken into account in this study. Moreover, the heuristic segmentation algorithm that is suitable to detect the mutation points of flow series is employed to identify the change points. Besides, based on the law of tolerance and ecological adaptation theory, the maximum instream ecological flow is calculated, which is the highest frequency of the monthly flow based on the GEV distribution and very suitable for healthy development of the river ecosystems. Furthermore, in order to guarantee the sustainable development of river ecosystems under some bad circumstances, minimum instream ecological flow is calculated by a modified Tennant method which is improved by replacing the average flow with the highest frequency of flow. Since the modified Tennant method is more suitable to reflect the law of flow, it has physical significance, and the calculation results are more reasonable. |
| format | Article |
| id | doaj-art-2d74f8c689a6466b82a403791acfe2eb |
| institution | Kabale University |
| issn | 1110-757X 1687-0042 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Applied Mathematics |
| spelling | doaj-art-2d74f8c689a6466b82a403791acfe2eb2025-02-03T01:32:18ZengWileyJournal of Applied Mathematics1110-757X1687-00422014-01-01201410.1155/2014/127067127067Calculation of the Instream Ecological Flow of the Wei River Based on Hydrological VariationShengzhi Huang0Jianxia Chang1Qiang Huang2Yimin Wang3Yutong Chen4State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an 710048, ChinaState Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an 710048, ChinaState Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an 710048, ChinaState Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an 710048, ChinaState Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an 710048, ChinaIt is of great significance for the watershed management department to reasonably allocate water resources and ensure the sustainable development of river ecosystems. The greatly important issue is to accurately calculate instream ecological flow. In order to precisely compute instream ecological flow, flow variation is taken into account in this study. Moreover, the heuristic segmentation algorithm that is suitable to detect the mutation points of flow series is employed to identify the change points. Besides, based on the law of tolerance and ecological adaptation theory, the maximum instream ecological flow is calculated, which is the highest frequency of the monthly flow based on the GEV distribution and very suitable for healthy development of the river ecosystems. Furthermore, in order to guarantee the sustainable development of river ecosystems under some bad circumstances, minimum instream ecological flow is calculated by a modified Tennant method which is improved by replacing the average flow with the highest frequency of flow. Since the modified Tennant method is more suitable to reflect the law of flow, it has physical significance, and the calculation results are more reasonable.http://dx.doi.org/10.1155/2014/127067 |
| spellingShingle | Shengzhi Huang Jianxia Chang Qiang Huang Yimin Wang Yutong Chen Calculation of the Instream Ecological Flow of the Wei River Based on Hydrological Variation Journal of Applied Mathematics |
| title | Calculation of the Instream Ecological Flow of the Wei River Based on Hydrological Variation |
| title_full | Calculation of the Instream Ecological Flow of the Wei River Based on Hydrological Variation |
| title_fullStr | Calculation of the Instream Ecological Flow of the Wei River Based on Hydrological Variation |
| title_full_unstemmed | Calculation of the Instream Ecological Flow of the Wei River Based on Hydrological Variation |
| title_short | Calculation of the Instream Ecological Flow of the Wei River Based on Hydrological Variation |
| title_sort | calculation of the instream ecological flow of the wei river based on hydrological variation |
| url | http://dx.doi.org/10.1155/2014/127067 |
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