The Importance of Impoundment interception in Simulating Riverine Dissolved Organic Carbon
Abstract Modeling of riverine dissolved organic carbon (DOC) dynamics is of great importance for the global carbon budget. Impoundment interception changes the travel time of water and DOC from upslope contributing areas, exerting substantial influence on riverine DOC dynamics in the catchments with...
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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/10.1029/2024WR038133 |
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| author | JiaoJiao Liu JunZhi Liu XinZhong Du RenKui Guo Zheng Duan BinJie Yuan YongQin Liu |
| author_facet | JiaoJiao Liu JunZhi Liu XinZhong Du RenKui Guo Zheng Duan BinJie Yuan YongQin Liu |
| author_sort | JiaoJiao Liu |
| collection | DOAJ |
| description | Abstract Modeling of riverine dissolved organic carbon (DOC) dynamics is of great importance for the global carbon budget. Impoundment interception changes the travel time of water and DOC from upslope contributing areas, exerting substantial influence on riverine DOC dynamics in the catchments with many impoundments. However, the impact of impoundment interception representation on riverine DOC modeling has not been evaluated so far. This study investigated to what extent impoundment interception representation affects DOC simulations using a newly developed catchment‐scale DOC model, which can represent the upslope contributing areas of impoundments and the impoundment interception process. The results showed that streamflow and DOC load simulation were well simulated regardless of whether impoundment interception was represented, but the simulation of DOC concentrations was satisfiable only when impoundment interception was taken into account. The simulation without impoundment interception produced unrealistic fluctuation of DOC concentration due to the direct mixing of DOC from different sources with contrasting concentration gradients. These results underscored the significance of employing an appropriate model structure for riverine DOC simulation. It is strongly recommended that DOC concentration be utilized for model evaluation in order to attain robust simulation outcomes. Moreover, the newly developed model in this study keeps a balance between the completeness of process presentation and model complexity, occupying a unique “ecological niche” among catchment‐scale riverine DOC models. |
| format | Article |
| id | doaj-art-1c99bebdb9ba42399d33a2f3731ec4cb |
| 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-1c99bebdb9ba42399d33a2f3731ec4cb2025-08-23T13:05:51ZengWileyWater Resources Research0043-13971944-79732024-11-016011n/an/a10.1029/2024WR038133The Importance of Impoundment interception in Simulating Riverine Dissolved Organic CarbonJiaoJiao Liu0JunZhi Liu1XinZhong Du2RenKui Guo3Zheng Duan4BinJie Yuan5YongQin Liu6Center for the Pan‐Third Pole Environment Lanzhou University Lanzhou ChinaCenter for the Pan‐Third Pole Environment Lanzhou University Lanzhou ChinaKey Laboratory of Non‐point Source Pollution Control Ministry of Agriculture and Rural Affairs Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences Beijing ChinaDepartment of Physical Geography and Ecosystem Science Lund University Lund SwedenDepartment of Physical Geography and Ecosystem Science Lund University Lund SwedenJiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application Nanjing ChinaCenter for the Pan‐Third Pole Environment Lanzhou University Lanzhou ChinaAbstract Modeling of riverine dissolved organic carbon (DOC) dynamics is of great importance for the global carbon budget. Impoundment interception changes the travel time of water and DOC from upslope contributing areas, exerting substantial influence on riverine DOC dynamics in the catchments with many impoundments. However, the impact of impoundment interception representation on riverine DOC modeling has not been evaluated so far. This study investigated to what extent impoundment interception representation affects DOC simulations using a newly developed catchment‐scale DOC model, which can represent the upslope contributing areas of impoundments and the impoundment interception process. The results showed that streamflow and DOC load simulation were well simulated regardless of whether impoundment interception was represented, but the simulation of DOC concentrations was satisfiable only when impoundment interception was taken into account. The simulation without impoundment interception produced unrealistic fluctuation of DOC concentration due to the direct mixing of DOC from different sources with contrasting concentration gradients. These results underscored the significance of employing an appropriate model structure for riverine DOC simulation. It is strongly recommended that DOC concentration be utilized for model evaluation in order to attain robust simulation outcomes. Moreover, the newly developed model in this study keeps a balance between the completeness of process presentation and model complexity, occupying a unique “ecological niche” among catchment‐scale riverine DOC models.https://doi.org/10.1029/2024WR038133carbon cyclingdissolved organic carbonriverimpoundmentwatershed model |
| spellingShingle | JiaoJiao Liu JunZhi Liu XinZhong Du RenKui Guo Zheng Duan BinJie Yuan YongQin Liu The Importance of Impoundment interception in Simulating Riverine Dissolved Organic Carbon Water Resources Research carbon cycling dissolved organic carbon river impoundment watershed model |
| title | The Importance of Impoundment interception in Simulating Riverine Dissolved Organic Carbon |
| title_full | The Importance of Impoundment interception in Simulating Riverine Dissolved Organic Carbon |
| title_fullStr | The Importance of Impoundment interception in Simulating Riverine Dissolved Organic Carbon |
| title_full_unstemmed | The Importance of Impoundment interception in Simulating Riverine Dissolved Organic Carbon |
| title_short | The Importance of Impoundment interception in Simulating Riverine Dissolved Organic Carbon |
| title_sort | importance of impoundment interception in simulating riverine dissolved organic carbon |
| topic | carbon cycling dissolved organic carbon river impoundment watershed model |
| url | https://doi.org/10.1029/2024WR038133 |
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