globalchange  > 气候变化与战略
DOI: 10.5194/hess-24-4369-2020
论文题名:
The influence of a prolonged meteorological drought on catchment water storage capacity: A hydrological-model perspective
作者: Pan Z.; Liu P.; Xu C.-Y.; Cheng L.; Tian J.; Cheng S.; Xie K.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2020
卷: 24, 期:9
起始页码: 4369
结束页码: 4387
语种: 英语
Scopus关键词: Catchments ; Climate models ; Drought ; Forestry ; Runoff ; Change-point analysis ; Climate characteristics ; Hydrological droughts ; Hydrological modeling ; Meteorological drought ; South-eastern Australia ; Statistical approach ; Water storage capacity ; Climate change ; catchment ; drought ; hydrological modeling ; numerical model ; water storage
英文摘要: Understanding the propagation of prolonged meteorological drought helps solve the problem of intensified water scarcity around the world. Most of the existing literature studied the propagation of drought from one type to another (e.g., from meteorological to hydrological drought) with statistical approaches; there remains difficulty in revealing the causality between meteorological drought and potential changes in the catchment water storage capacity (CWSC). This study aims to identify the response of the CWSC to the meteorological drought by examining the changes of hydrological-model parameters after drought events. Firstly, the temporal variation of a model parameter that denotes that the CWSC is estimated to reflect the potential changes in the real CWSC. Next, the change points of the CWSC parameter were determined based on the Bayesian change point analysis. Finally, the possible association and linkage between the shift in the CWSC and the time lag of the catchment (i.e., time lag between the onset of the drought and the change point) with multiple catchment properties and climate characteristics were identified. A total of 83 catchments from southeastern Australia were selected as the study areas. Results indicated that (1) significant shifts in the CWSC can be observed in 62.7% of the catchments, which can be divided into two subgroups with the opposite response, i.e., 48.2% of catchments had lower runoff generation rates, while 14.5% of catchments had higher runoff generation rate; (2) the increase in the CWSC during a chronic drought can be observed in smaller catchments with lower elevation, slope and forest coverage of evergreen broadleaf forest, while the decrease in the CWSC can be observed in larger catchments with higher elevation and larger coverage of evergreen broadleaf forest; (3) catchments with a lower proportion of evergreen broadleaf forest usually have a longer time lag and are more resilient. This study improves our understanding of possible changes in the CWSC induced by a prolonged meteorological drought, which will help improve our ability to simulate the hydrological system under climate change. © 2020 Author(s).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162601
Appears in Collections:气候变化与战略

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作者单位: Pan, Z., State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China, Hubei Provincial Key Lab of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, China, Changjiang Institute of Survey Planning, Design and Research, Wuhan, 430010, China, Department of Geosciences, University of Oslo, P.O. Box 1047 Blindern, Oslo, 0316, Norway; Liu, P., State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China, Hubei Provincial Key Lab of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, China; Xu, C.-Y., Department of Geosciences, University of Oslo, P.O. Box 1047 Blindern, Oslo, 0316, Norway; Cheng, L., State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China, Hubei Provincial Key Lab of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, China; Tian, J., State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China, Hubei Provincial Key Lab of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, China; Cheng, S., State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China, Hubei Provincial Key Lab of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, China; Xie, K., State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China, Hubei Provincial Key Lab of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, China

Recommended Citation:
Pan Z.,Liu P.,Xu C.-Y.,et al. The influence of a prolonged meteorological drought on catchment water storage capacity: A hydrological-model perspective[J]. Hydrology and Earth System Sciences,2020-01-01,24(9)
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