Early Warning and Joint Regulation of Water Quantity and Quality in the Daqing River Basin
In the recent decades, the issue of water-resource security of the Daqing River Basin, which is one of the five major rivers in the Haihe River Basin, has become increasingly serious affected by climate change and human activities. In this paper, a dynamic simulation and early warning model of water...
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MDPI AG
2022-09-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/14/19/3068 |
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| author | Liang Chen Mingxiang Yang Yang Liu Linjiang Nan |
| author_facet | Liang Chen Mingxiang Yang Yang Liu Linjiang Nan |
| author_sort | Liang Chen |
| collection | DOAJ |
| description | In the recent decades, the issue of water-resource security of the Daqing River Basin, which is one of the five major rivers in the Haihe River Basin, has become increasingly serious affected by climate change and human activities. In this paper, a dynamic simulation and early warning model of water quantity and quality in this basin based on the SWAT model was constructed to promote the implementation of water environment quality and safety bottom line in the Beijing-Tianjin-Hebei region. The results of the study are as follows: (1) When encountering a once-in-a-century rainstorm, the flood pressure of Zijingguan in the flood season is the highest, with the highest water level reaching 521.23 m, and the overall maximum runoff follows the order of Zijingguan > Fuping > Zhangfang. (2) When the NH<sub>3</sub>-N emissions are reduced by 37.64~85.10% in each month (based on the level in 2017), the water quality at the outlet of the basin can reach the standard, and the upper limit of NH<sub>3</sub>-N emissions is 504.5 t/m. (3) The regulation and control scheme seeking to “ensure the base flow with standard water quality” and “optimize NH<sub>3</sub>-N annual emission” is proposed in this paper. The NH<sub>3</sub>-N concentration at the outlet of all watersheds can reach the standard when the basic runoff of each sub-basin reaches 0.01 to 10.32 m<sup>3</sup>/s. In addition, concentrating the emission in July, August, and September and reducing the emission intensity of NH<sub>3</sub>-N in proportion can significantly reduce the monthly average NH<sub>3</sub>-N concentration (<1.99 mg/L) at the outlet section of the basin. |
| first_indexed | 2024-03-09T20:58:41Z |
| format | Article |
| id | doaj.art-c9338be702034586a39b015052635ff4 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T20:58:41Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-c9338be702034586a39b015052635ff42023-11-23T22:15:14ZengMDPI AGWater2073-44412022-09-011419306810.3390/w14193068Early Warning and Joint Regulation of Water Quantity and Quality in the Daqing River BasinLiang Chen0Mingxiang Yang1Yang Liu2Linjiang Nan3China Institute of Water Resources and Hydropower Research, Beijing 100038, ChinaChina Institute of Water Resources and Hydropower Research, Beijing 100038, ChinaSchool of Civil Engineering, Tianjin University, Tianjin 300350, ChinaCollege of Water Resource & Hydropower, Sichuan University, Chengdu 610065, ChinaIn the recent decades, the issue of water-resource security of the Daqing River Basin, which is one of the five major rivers in the Haihe River Basin, has become increasingly serious affected by climate change and human activities. In this paper, a dynamic simulation and early warning model of water quantity and quality in this basin based on the SWAT model was constructed to promote the implementation of water environment quality and safety bottom line in the Beijing-Tianjin-Hebei region. The results of the study are as follows: (1) When encountering a once-in-a-century rainstorm, the flood pressure of Zijingguan in the flood season is the highest, with the highest water level reaching 521.23 m, and the overall maximum runoff follows the order of Zijingguan > Fuping > Zhangfang. (2) When the NH<sub>3</sub>-N emissions are reduced by 37.64~85.10% in each month (based on the level in 2017), the water quality at the outlet of the basin can reach the standard, and the upper limit of NH<sub>3</sub>-N emissions is 504.5 t/m. (3) The regulation and control scheme seeking to “ensure the base flow with standard water quality” and “optimize NH<sub>3</sub>-N annual emission” is proposed in this paper. The NH<sub>3</sub>-N concentration at the outlet of all watersheds can reach the standard when the basic runoff of each sub-basin reaches 0.01 to 10.32 m<sup>3</sup>/s. In addition, concentrating the emission in July, August, and September and reducing the emission intensity of NH<sub>3</sub>-N in proportion can significantly reduce the monthly average NH<sub>3</sub>-N concentration (<1.99 mg/L) at the outlet section of the basin.https://www.mdpi.com/2073-4441/14/19/3068water quantitywater qualityearly warningjoint regulationDaqing River |
| spellingShingle | Liang Chen Mingxiang Yang Yang Liu Linjiang Nan Early Warning and Joint Regulation of Water Quantity and Quality in the Daqing River Basin Water water quantity water quality early warning joint regulation Daqing River |
| title | Early Warning and Joint Regulation of Water Quantity and Quality in the Daqing River Basin |
| title_full | Early Warning and Joint Regulation of Water Quantity and Quality in the Daqing River Basin |
| title_fullStr | Early Warning and Joint Regulation of Water Quantity and Quality in the Daqing River Basin |
| title_full_unstemmed | Early Warning and Joint Regulation of Water Quantity and Quality in the Daqing River Basin |
| title_short | Early Warning and Joint Regulation of Water Quantity and Quality in the Daqing River Basin |
| title_sort | early warning and joint regulation of water quantity and quality in the daqing river basin |
| topic | water quantity water quality early warning joint regulation Daqing River |
| url | https://www.mdpi.com/2073-4441/14/19/3068 |
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