Quantifying the impact of climate change and human activities on the eco-hydrological regimes of the Weihe River Basin, Northwest China
Climate change and anthropogenic interventions have obviously altered the eco-hydrological regimes. A quantitative evaluation and attribution of the eco-hydrological alterations are urgently required. In this study, we evaluated the various attributions of eco-hydrological regimes in the Weihe River...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2023-01-01
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| Series: | Hydrology Research |
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| Online Access: | http://hr.iwaponline.com/content/54/1/49 |
| _version_ | 1797903438091124736 |
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| author | Shanhu Jiang Yating Liu Menghao Wang Yongwei Zhu Hao Cui Shuping Du Chong-Yu Xu |
| author_facet | Shanhu Jiang Yating Liu Menghao Wang Yongwei Zhu Hao Cui Shuping Du Chong-Yu Xu |
| author_sort | Shanhu Jiang |
| collection | DOAJ |
| description | Climate change and anthropogenic interventions have obviously altered the eco-hydrological regimes. A quantitative evaluation and attribution of the eco-hydrological alterations are urgently required. In this study, we evaluated the various attributions of eco-hydrological regimes in the Weihe River Basin (WRB). Firstly, the trends and change-point analysis of hydrological elements were examined, and the natural streamflow was reproduced based on the variable infiltration capacity model. Then, the most ecologically relevant hydrological indicators (ERHIs) were selected and combined with the eco-deficit and eco-surplus indicators to assess the degree of eco-hydrological regime alterations. Finally, the relative contributions to eco-hydrological alterations were quantified using the ‘simulated–observed comparison’ method. The results showed that (1) the streamflow of the WRB exhibited significant decreasing trends (p < 0.01), and a significant change point (p < 0.01) of the streamflow series was identified in 1990. (2) Seven representative indicators of hydrological alteration were selected as ERHIs. (3) During the human-induced period (1991–2017), human activities were the dominant factors in the eco-hydrological alterations as well as the variations of the ERHI indexes and the eco-deficit and eco-surplus metrics. Overall, the proposed framework may improve the understanding of the driving forces of eco-hydrological regime alterations under a changing environment.
HIGHLIGHTS
The principal component analysis was used to remove redundancy and correlation among the indicators of hydrological alterations and determine the ecologically relevant hydrological indicators.;
A combination of ERHIs and eco-metrics to assess the eco-hydrological regime alterations at different time scales is used.;
The effects of climate change and anthropogenic activities on the eco-hydrological regime alterations were quantitatively distinguished.; |
| first_indexed | 2024-04-10T09:32:56Z |
| format | Article |
| id | doaj.art-49e1892dba9e489ab7ec38ebcda755e9 |
| institution | Directory Open Access Journal |
| issn | 1998-9563 2224-7955 |
| language | English |
| last_indexed | 2024-04-10T09:32:56Z |
| publishDate | 2023-01-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Hydrology Research |
| spelling | doaj.art-49e1892dba9e489ab7ec38ebcda755e92023-02-18T08:25:44ZengIWA PublishingHydrology Research1998-95632224-79552023-01-01541496410.2166/nh.2022.194194Quantifying the impact of climate change and human activities on the eco-hydrological regimes of the Weihe River Basin, Northwest ChinaShanhu Jiang0Yating Liu1Menghao Wang2Yongwei Zhu3Hao Cui4Shuping Du5Chong-Yu Xu6 State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China Department of Geosciences, University of Oslo, Oslo, Norway Climate change and anthropogenic interventions have obviously altered the eco-hydrological regimes. A quantitative evaluation and attribution of the eco-hydrological alterations are urgently required. In this study, we evaluated the various attributions of eco-hydrological regimes in the Weihe River Basin (WRB). Firstly, the trends and change-point analysis of hydrological elements were examined, and the natural streamflow was reproduced based on the variable infiltration capacity model. Then, the most ecologically relevant hydrological indicators (ERHIs) were selected and combined with the eco-deficit and eco-surplus indicators to assess the degree of eco-hydrological regime alterations. Finally, the relative contributions to eco-hydrological alterations were quantified using the ‘simulated–observed comparison’ method. The results showed that (1) the streamflow of the WRB exhibited significant decreasing trends (p < 0.01), and a significant change point (p < 0.01) of the streamflow series was identified in 1990. (2) Seven representative indicators of hydrological alteration were selected as ERHIs. (3) During the human-induced period (1991–2017), human activities were the dominant factors in the eco-hydrological alterations as well as the variations of the ERHI indexes and the eco-deficit and eco-surplus metrics. Overall, the proposed framework may improve the understanding of the driving forces of eco-hydrological regime alterations under a changing environment. HIGHLIGHTS The principal component analysis was used to remove redundancy and correlation among the indicators of hydrological alterations and determine the ecologically relevant hydrological indicators.; A combination of ERHIs and eco-metrics to assess the eco-hydrological regime alterations at different time scales is used.; The effects of climate change and anthropogenic activities on the eco-hydrological regime alterations were quantitatively distinguished.;http://hr.iwaponline.com/content/54/1/49changing environmenteco-deficiteco-hydrological regimeeco-surplusweihe river basin |
| spellingShingle | Shanhu Jiang Yating Liu Menghao Wang Yongwei Zhu Hao Cui Shuping Du Chong-Yu Xu Quantifying the impact of climate change and human activities on the eco-hydrological regimes of the Weihe River Basin, Northwest China Hydrology Research changing environment eco-deficit eco-hydrological regime eco-surplus weihe river basin |
| title | Quantifying the impact of climate change and human activities on the eco-hydrological regimes of the Weihe River Basin, Northwest China |
| title_full | Quantifying the impact of climate change and human activities on the eco-hydrological regimes of the Weihe River Basin, Northwest China |
| title_fullStr | Quantifying the impact of climate change and human activities on the eco-hydrological regimes of the Weihe River Basin, Northwest China |
| title_full_unstemmed | Quantifying the impact of climate change and human activities on the eco-hydrological regimes of the Weihe River Basin, Northwest China |
| title_short | Quantifying the impact of climate change and human activities on the eco-hydrological regimes of the Weihe River Basin, Northwest China |
| title_sort | quantifying the impact of climate change and human activities on the eco hydrological regimes of the weihe river basin northwest china |
| topic | changing environment eco-deficit eco-hydrological regime eco-surplus weihe river basin |
| url | http://hr.iwaponline.com/content/54/1/49 |
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