Spatial and temporal evolution of drought characteristics across the Yellow River basin
Drought disasters restrict economic and social development. Understanding the evolution of the spatiotemporal characteristics of drought plays a vital role in basin risk response and management. Complex empirical orthogonal function analysis is widely used in meteorological research and is an import...
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2021
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oai:doaj.org-article:364f6f50e36b48558778e359ab8a51bf2021-12-01T05:00:41ZSpatial and temporal evolution of drought characteristics across the Yellow River basin1470-160X10.1016/j.ecolind.2021.108207https://doaj.org/article/364f6f50e36b48558778e359ab8a51bf2021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21008724https://doaj.org/toc/1470-160XDrought disasters restrict economic and social development. Understanding the evolution of the spatiotemporal characteristics of drought plays a vital role in basin risk response and management. Complex empirical orthogonal function analysis is widely used in meteorological research and is an important tool for studying the spatial-temporal distribution structure of arid fields. This research aims to take the Yellow River Basin (YRB) as an example, separate the temporal and spatial distribution structure of drought based on the CEOF method, and explore the abrupt changes, trends, and periodic characteristics of different temporal and spatial distribution patterns. In addition, the cross-wavelet analysis reveals the lagging correlation relationship between the distribution pattern of the arid field in the basin and the Southern Oscillation factor. Results indicated that: (1) there are three typical spatial and temporal distribution patterns (full basin type, southeast-northwest reversed type and east-west reversed type) of the interannual scale drought in the YRB; (2) interannual drought evolution have obvious spatial propagation characteristics. (3) There are correlations between the three types and the Southern Oscillation on the temporal-frequency scale, and there is a time lag of 1-2a with the Southern Oscillation factor.Kai ZhouYimin WangJianxia ChangShuai ZhouAijun GuoElsevierarticleDroughtSpatial and temporal distributionSpatial propagationYellow River basinEcologyQH540-549.5ENEcological Indicators, Vol 131, Iss , Pp 108207- (2021) |
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DOAJ |
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Drought Spatial and temporal distribution Spatial propagation Yellow River basin Ecology QH540-549.5 |
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Drought Spatial and temporal distribution Spatial propagation Yellow River basin Ecology QH540-549.5 Kai Zhou Yimin Wang Jianxia Chang Shuai Zhou Aijun Guo Spatial and temporal evolution of drought characteristics across the Yellow River basin |
description |
Drought disasters restrict economic and social development. Understanding the evolution of the spatiotemporal characteristics of drought plays a vital role in basin risk response and management. Complex empirical orthogonal function analysis is widely used in meteorological research and is an important tool for studying the spatial-temporal distribution structure of arid fields. This research aims to take the Yellow River Basin (YRB) as an example, separate the temporal and spatial distribution structure of drought based on the CEOF method, and explore the abrupt changes, trends, and periodic characteristics of different temporal and spatial distribution patterns. In addition, the cross-wavelet analysis reveals the lagging correlation relationship between the distribution pattern of the arid field in the basin and the Southern Oscillation factor. Results indicated that: (1) there are three typical spatial and temporal distribution patterns (full basin type, southeast-northwest reversed type and east-west reversed type) of the interannual scale drought in the YRB; (2) interannual drought evolution have obvious spatial propagation characteristics. (3) There are correlations between the three types and the Southern Oscillation on the temporal-frequency scale, and there is a time lag of 1-2a with the Southern Oscillation factor. |
format |
article |
author |
Kai Zhou Yimin Wang Jianxia Chang Shuai Zhou Aijun Guo |
author_facet |
Kai Zhou Yimin Wang Jianxia Chang Shuai Zhou Aijun Guo |
author_sort |
Kai Zhou |
title |
Spatial and temporal evolution of drought characteristics across the Yellow River basin |
title_short |
Spatial and temporal evolution of drought characteristics across the Yellow River basin |
title_full |
Spatial and temporal evolution of drought characteristics across the Yellow River basin |
title_fullStr |
Spatial and temporal evolution of drought characteristics across the Yellow River basin |
title_full_unstemmed |
Spatial and temporal evolution of drought characteristics across the Yellow River basin |
title_sort |
spatial and temporal evolution of drought characteristics across the yellow river basin |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://doaj.org/article/364f6f50e36b48558778e359ab8a51bf |
work_keys_str_mv |
AT kaizhou spatialandtemporalevolutionofdroughtcharacteristicsacrosstheyellowriverbasin AT yiminwang spatialandtemporalevolutionofdroughtcharacteristicsacrosstheyellowriverbasin AT jianxiachang spatialandtemporalevolutionofdroughtcharacteristicsacrosstheyellowriverbasin AT shuaizhou spatialandtemporalevolutionofdroughtcharacteristicsacrosstheyellowriverbasin AT aijunguo spatialandtemporalevolutionofdroughtcharacteristicsacrosstheyellowriverbasin |
_version_ |
1718405593104908288 |