Hydrological drought assessment of the Yellow River Basin based on non-stationary model
Study region: the Yellow River Basin Study focus: Non-stationary hydrological conditions are becoming increasingly common due to climate change and human activities, and pose a novel challenge to the management of water resources and related risks, especially for large basins. However, prevalent res...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Journal of Hydrology: Regional Studies |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581824003239 |
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| author | Jiarui Yu Rui Xiao Mingzhi Liang Yaping Wang Shuai Wang |
| author_facet | Jiarui Yu Rui Xiao Mingzhi Liang Yaping Wang Shuai Wang |
| author_sort | Jiarui Yu |
| collection | DOAJ |
| description | Study region: the Yellow River Basin Study focus: Non-stationary hydrological conditions are becoming increasingly common due to climate change and human activities, and pose a novel challenge to the management of water resources and related risks, especially for large basins. However, prevalent research on drought assessment often ignores the non-stationary characteristics of hydrological processes. In this study, we investigated the stationarity of the runoff of the Yellow River Basin (YRB), the second-longest basin in China. We used an approach for assessing non-stationary droughts based on the generalized additive model for location, scale, and shape to establish a standardized runoff index containing covariates (SRI_cov) to identify hydrological droughts in the basin from 1986 to 2015. New hydrological insights for the region: The results show that the runoff was non-stationary in the YRB. Based on SRI_cov, hydrological drought predominantly occurred in the entire YRB in spring. From 1986, the number of months in which droughts occurred in the YRB exhibited a general trend of increase and peaked around 2002. After that, the total number of droughts significantly decreased but extreme droughts had become more prominent since 2005. The drought was more severe in the middle reaches of the Yellow River, and was characterized by a high frequency, intensity, and severity. Our analysis enhances the understanding of hydrological modeling and drought assessment under non-stationary conditions. |
| format | Article |
| id | doaj-art-f2ce5227f5ad4f1e92e3f91aaabc6830 |
| institution | OA Journals |
| issn | 2214-5818 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj-art-f2ce5227f5ad4f1e92e3f91aaabc68302025-08-20T02:30:51ZengElsevierJournal of Hydrology: Regional Studies2214-58182024-12-015610197410.1016/j.ejrh.2024.101974Hydrological drought assessment of the Yellow River Basin based on non-stationary modelJiarui Yu0Rui Xiao1Mingzhi Liang2Yaping Wang3Shuai Wang4State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, PR ChinaState Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, PR ChinaState Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, PR ChinaCenter for Ecological Forecasting and Global Change, College of Forestry, Northwest A&F University, Yangling 712100, PR ChinaState Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, PR China; Corresponding author.Study region: the Yellow River Basin Study focus: Non-stationary hydrological conditions are becoming increasingly common due to climate change and human activities, and pose a novel challenge to the management of water resources and related risks, especially for large basins. However, prevalent research on drought assessment often ignores the non-stationary characteristics of hydrological processes. In this study, we investigated the stationarity of the runoff of the Yellow River Basin (YRB), the second-longest basin in China. We used an approach for assessing non-stationary droughts based on the generalized additive model for location, scale, and shape to establish a standardized runoff index containing covariates (SRI_cov) to identify hydrological droughts in the basin from 1986 to 2015. New hydrological insights for the region: The results show that the runoff was non-stationary in the YRB. Based on SRI_cov, hydrological drought predominantly occurred in the entire YRB in spring. From 1986, the number of months in which droughts occurred in the YRB exhibited a general trend of increase and peaked around 2002. After that, the total number of droughts significantly decreased but extreme droughts had become more prominent since 2005. The drought was more severe in the middle reaches of the Yellow River, and was characterized by a high frequency, intensity, and severity. Our analysis enhances the understanding of hydrological modeling and drought assessment under non-stationary conditions.http://www.sciencedirect.com/science/article/pii/S2214581824003239Hydrological droughtYellow River BasinNon-stationarityGAMLSSStandardized runoff index |
| spellingShingle | Jiarui Yu Rui Xiao Mingzhi Liang Yaping Wang Shuai Wang Hydrological drought assessment of the Yellow River Basin based on non-stationary model Journal of Hydrology: Regional Studies Hydrological drought Yellow River Basin Non-stationarity GAMLSS Standardized runoff index |
| title | Hydrological drought assessment of the Yellow River Basin based on non-stationary model |
| title_full | Hydrological drought assessment of the Yellow River Basin based on non-stationary model |
| title_fullStr | Hydrological drought assessment of the Yellow River Basin based on non-stationary model |
| title_full_unstemmed | Hydrological drought assessment of the Yellow River Basin based on non-stationary model |
| title_short | Hydrological drought assessment of the Yellow River Basin based on non-stationary model |
| title_sort | hydrological drought assessment of the yellow river basin based on non stationary model |
| topic | Hydrological drought Yellow River Basin Non-stationarity GAMLSS Standardized runoff index |
| url | http://www.sciencedirect.com/science/article/pii/S2214581824003239 |
| work_keys_str_mv | AT jiaruiyu hydrologicaldroughtassessmentoftheyellowriverbasinbasedonnonstationarymodel AT ruixiao hydrologicaldroughtassessmentoftheyellowriverbasinbasedonnonstationarymodel AT mingzhiliang hydrologicaldroughtassessmentoftheyellowriverbasinbasedonnonstationarymodel AT yapingwang hydrologicaldroughtassessmentoftheyellowriverbasinbasedonnonstationarymodel AT shuaiwang hydrologicaldroughtassessmentoftheyellowriverbasinbasedonnonstationarymodel |