Impact of Forest Dieback on Hydrology and Nitrogen Export Using a New Dynamic Water Quality Model
Abstract Forest status is crucial for catchment hydrology and water quality but is increasingly disturbed by human activities and climatic factors. Therefore, it is urgently necessary to develop water quality models that can adapt to these changes. This study used a new dynamic Hydrological Predicti...
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| Format: | Article |
| Language: | English |
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Wiley
2024-11-01
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| Series: | Water Resources Research |
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| Online Access: | https://doi.org/10.1029/2024WR037341 |
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| author | Mufeng Chen Seifeddine Jomaa Angela Lausch Burkhard Beudert Salman Ghaffar Wenhao Jia Michael Rode |
| author_facet | Mufeng Chen Seifeddine Jomaa Angela Lausch Burkhard Beudert Salman Ghaffar Wenhao Jia Michael Rode |
| author_sort | Mufeng Chen |
| collection | DOAJ |
| description | Abstract Forest status is crucial for catchment hydrology and water quality but is increasingly disturbed by human activities and climatic factors. Therefore, it is urgently necessary to develop water quality models that can adapt to these changes. This study used a new dynamic Hydrological Predictions for the Environment (HYPE) model to assess the effect of rapid and continuous forest changes on catchment hydrology and nitrogen export. The modified HYPE model was implemented for the 25 years period in the Große Ohe catchment in Germany, which has experienced severe forest dieback and recovery. Due to the stochastic nature of infestation events, data covering the entire process of forest change are rare. The modified HYPE model performed well at different scales for discharge and dissolved inorganic nitrogen (DIN) export. It was able to (a) capture the timing of peak flows and the seasonal DIN concentration dynamics and (b) reflect the initial increase and subsequent decrease trend in discharge and DIN export in accordance with forest dieback and regeneration. The increase in nitrogen export after forest dieback primarily resulted from reduced forest uptake and increased soil nitrogen availability from tree residues. The difference in runoff and nitrogen export increment with or without regeneration highlights the importance of forest regeneration in restoring catchment hydrology and water quality. Additionally, a decrease in DIN export after residue removal implies the impact of sound post‐disturbance management strategies. The dynamic modeling under changing catchment forests can enhance the analysis of catchment water quality and effectively support forest management. |
| format | Article |
| id | doaj-art-5bb44a321aa44c789d59ac950041d18f |
| institution | Kabale University |
| issn | 0043-1397 1944-7973 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Water Resources Research |
| spelling | doaj-art-5bb44a321aa44c789d59ac950041d18f2025-08-23T13:05:51ZengWileyWater Resources Research0043-13971944-79732024-11-016011n/an/a10.1029/2024WR037341Impact of Forest Dieback on Hydrology and Nitrogen Export Using a New Dynamic Water Quality ModelMufeng Chen0Seifeddine Jomaa1Angela Lausch2Burkhard Beudert3Salman Ghaffar4Wenhao Jia5Michael Rode6Department of Aquatic Ecosystem Analysis and Management Helmholtz Centre for Environmental Research – UFZ Magdeburg GermanyDepartment of Aquatic Ecosystem Analysis and Management Helmholtz Centre for Environmental Research – UFZ Magdeburg GermanyDepartment of Computational Landscape Ecology Helmholtz Centre for Environmental Research – UFZ Leipzig GermanyDepartment of Conservation and Research Bavarian Forest National Park Grafenau GermanyDepartment of Aquatic Ecosystem Analysis and Management Helmholtz Centre for Environmental Research – UFZ Magdeburg GermanyPearl River Water Resources Research Institute Guangzhou ChinaDepartment of Aquatic Ecosystem Analysis and Management Helmholtz Centre for Environmental Research – UFZ Magdeburg GermanyAbstract Forest status is crucial for catchment hydrology and water quality but is increasingly disturbed by human activities and climatic factors. Therefore, it is urgently necessary to develop water quality models that can adapt to these changes. This study used a new dynamic Hydrological Predictions for the Environment (HYPE) model to assess the effect of rapid and continuous forest changes on catchment hydrology and nitrogen export. The modified HYPE model was implemented for the 25 years period in the Große Ohe catchment in Germany, which has experienced severe forest dieback and recovery. Due to the stochastic nature of infestation events, data covering the entire process of forest change are rare. The modified HYPE model performed well at different scales for discharge and dissolved inorganic nitrogen (DIN) export. It was able to (a) capture the timing of peak flows and the seasonal DIN concentration dynamics and (b) reflect the initial increase and subsequent decrease trend in discharge and DIN export in accordance with forest dieback and regeneration. The increase in nitrogen export after forest dieback primarily resulted from reduced forest uptake and increased soil nitrogen availability from tree residues. The difference in runoff and nitrogen export increment with or without regeneration highlights the importance of forest regeneration in restoring catchment hydrology and water quality. Additionally, a decrease in DIN export after residue removal implies the impact of sound post‐disturbance management strategies. The dynamic modeling under changing catchment forests can enhance the analysis of catchment water quality and effectively support forest management.https://doi.org/10.1029/2024WR037341catchment modelingforest diebacknitrogen export |
| spellingShingle | Mufeng Chen Seifeddine Jomaa Angela Lausch Burkhard Beudert Salman Ghaffar Wenhao Jia Michael Rode Impact of Forest Dieback on Hydrology and Nitrogen Export Using a New Dynamic Water Quality Model Water Resources Research catchment modeling forest dieback nitrogen export |
| title | Impact of Forest Dieback on Hydrology and Nitrogen Export Using a New Dynamic Water Quality Model |
| title_full | Impact of Forest Dieback on Hydrology and Nitrogen Export Using a New Dynamic Water Quality Model |
| title_fullStr | Impact of Forest Dieback on Hydrology and Nitrogen Export Using a New Dynamic Water Quality Model |
| title_full_unstemmed | Impact of Forest Dieback on Hydrology and Nitrogen Export Using a New Dynamic Water Quality Model |
| title_short | Impact of Forest Dieback on Hydrology and Nitrogen Export Using a New Dynamic Water Quality Model |
| title_sort | impact of forest dieback on hydrology and nitrogen export using a new dynamic water quality model |
| topic | catchment modeling forest dieback nitrogen export |
| url | https://doi.org/10.1029/2024WR037341 |
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