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DOI | 10.1029/2019WR026038 |
An Improved Optimization Scheme for Representing Hillslopes and Depressions in Karst Hydrology | |
Xu, Chaohao1,2; Xu, Xianli1; Liu, Meixian1; Li, Zhenwei1; Zhang, Yaohua1,2; Zhu, Jingxuan3; Wang, Kelin1; Chen, Xi4,5; Zhang, Zhicai5; Peng, Tao6 | |
2020-05-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2020 |
卷号 | 56期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Understanding hydrological processes is essential for management of water resources and for promoting catchment sustainability. In karst regions, landscapes are spatially heterogeneous and include discontinuous soil distribution, and complex networks of matrices and conduits in hillslopes and depressions, which result in variation in hydrological processes. However, most previous studies have mainly focused on the effects of the distribution of soil depth and the fast-slow flow in the matrices and conduits on hydrological processes and ignored the different hydrological processes related to hillslopes and depressions. This study improved the VarKarst model by adding randomly distributed soil and epikarst depths (RSE), fast-slow flow (FS), and hillslopes and depressions (HD). The improved model was calibrated and validated in six large catchments (1,213-5,454 km(2)) and one small catchment (1.25 km(2)). Results showed that the schemes by combining FS and HD (Scenario FS + HD) and combining RSE, FS, and HD (Scenario RSE + FS + HD) improved model performance (calibrated and validated KGE ranged from 0.54 to 0.89 and AIC ranged from -336.49 to 669.77) compared models that included other schemes (original VarKarst, Scenario RSE, Scenario FS, Scenario HD, and Scenario RSE + FS), especially when reproducing discharge of peaks and recessions. These results suggest that there is a need to separate the hillslopes and depressions when modeling karstic hydrological processes. |
英文关键词 | VarKarst hydrological model hillslopes and depressions karst ecosystems Earth' s critical zone ecohydrology |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000537736400039 |
WOS关键词 | GROUNDWATER RECHARGE ; CATCHMENT ; SENSITIVITY ; MODEL ; CONNECTIVITY ; SIMULATION ; EPIKARST ; SYSTEM ; WATER |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/280674 |
专题 | 资源环境科学 |
作者单位 | 1.Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Huanjiang Observat & Res Stn Karst Ecosyst, Changsha, Peoples R China; 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China; 3.Hunan Normal Univ, Coll Resources & Environm Sci, Changsha, Peoples R China; 4.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin, Peoples R China; 5.Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing, Peoples R China; 6.Puding Karst Ecosyst Res Stn, Puding, Peoples R China |
推荐引用方式 GB/T 7714 | Xu, Chaohao,Xu, Xianli,Liu, Meixian,et al. An Improved Optimization Scheme for Representing Hillslopes and Depressions in Karst Hydrology[J]. WATER RESOURCES RESEARCH,2020,56(5). |
APA | Xu, Chaohao.,Xu, Xianli.,Liu, Meixian.,Li, Zhenwei.,Zhang, Yaohua.,...&Peng, Tao.(2020).An Improved Optimization Scheme for Representing Hillslopes and Depressions in Karst Hydrology.WATER RESOURCES RESEARCH,56(5). |
MLA | Xu, Chaohao,et al."An Improved Optimization Scheme for Representing Hillslopes and Depressions in Karst Hydrology".WATER RESOURCES RESEARCH 56.5(2020). |
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