Changes and Relationships of Climatic and Hydrological Droughts in the Jialing River Basin, China.

The comprehensive assessment of climatic and hydrological droughts in terms of their temporal and spatial evolutions is very important for water resources management and social development in the basin scale. To study the spatial and temporal changes of climatic and hydrological droughts and the rel...

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Main Authors: Xiaofan Zeng, Na Zhao, Huaiwei Sun, Lei Ye, Jianqing Zhai
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2015-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC4636145?pdf=render
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author Xiaofan Zeng
Na Zhao
Huaiwei Sun
Lei Ye
Jianqing Zhai
author_facet Xiaofan Zeng
Na Zhao
Huaiwei Sun
Lei Ye
Jianqing Zhai
author_sort Xiaofan Zeng
collection DOAJ
description The comprehensive assessment of climatic and hydrological droughts in terms of their temporal and spatial evolutions is very important for water resources management and social development in the basin scale. To study the spatial and temporal changes of climatic and hydrological droughts and the relationships between them, the SPEI and SDI are adopted to assess the changes and the correlations of climatic and hydrological droughts by selecting the Jialing River basin, China as the research area. The SPEI and SDI at different time scales are assessed both at the entire Jialing River basin and at the regional levels of the three sub basins. The results show that the SPEI and SDI are very suitable for assessing the changes and relationships of climatic and hydrological droughts in large basins. Based on the assessment, for the Jialing River basin, climatic and hydrological droughts have the increasing tendency during recent several decades, and the increasing trend of climatic droughts is significant or extremely significant in the western and northern basin, while hydrological drought has a less significant increasing trend. Additionally, climatic and hydrological droughts tend to increase in the next few years. The results also show that on short time scales, climatic droughts have one or two months lag impact on hydrological droughts in the north-west area of the basin, and have one month lag impact in south-east area of the basin. The assessment of climatic and hydrological droughts based on the SPEI and SDI could be very useful for water resources management and climate change adaptation at large basin scale.
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spelling doaj.art-a7ba2bfdd0154629b1c96fba12dfeae02022-12-22T02:51:50ZengPublic Library of Science (PLoS)PLoS ONE1932-62032015-01-011011e014164810.1371/journal.pone.0141648Changes and Relationships of Climatic and Hydrological Droughts in the Jialing River Basin, China.Xiaofan ZengNa ZhaoHuaiwei SunLei YeJianqing ZhaiThe comprehensive assessment of climatic and hydrological droughts in terms of their temporal and spatial evolutions is very important for water resources management and social development in the basin scale. To study the spatial and temporal changes of climatic and hydrological droughts and the relationships between them, the SPEI and SDI are adopted to assess the changes and the correlations of climatic and hydrological droughts by selecting the Jialing River basin, China as the research area. The SPEI and SDI at different time scales are assessed both at the entire Jialing River basin and at the regional levels of the three sub basins. The results show that the SPEI and SDI are very suitable for assessing the changes and relationships of climatic and hydrological droughts in large basins. Based on the assessment, for the Jialing River basin, climatic and hydrological droughts have the increasing tendency during recent several decades, and the increasing trend of climatic droughts is significant or extremely significant in the western and northern basin, while hydrological drought has a less significant increasing trend. Additionally, climatic and hydrological droughts tend to increase in the next few years. The results also show that on short time scales, climatic droughts have one or two months lag impact on hydrological droughts in the north-west area of the basin, and have one month lag impact in south-east area of the basin. The assessment of climatic and hydrological droughts based on the SPEI and SDI could be very useful for water resources management and climate change adaptation at large basin scale.http://europepmc.org/articles/PMC4636145?pdf=render
spellingShingle Xiaofan Zeng
Na Zhao
Huaiwei Sun
Lei Ye
Jianqing Zhai
Changes and Relationships of Climatic and Hydrological Droughts in the Jialing River Basin, China.
PLoS ONE
title Changes and Relationships of Climatic and Hydrological Droughts in the Jialing River Basin, China.
title_full Changes and Relationships of Climatic and Hydrological Droughts in the Jialing River Basin, China.
title_fullStr Changes and Relationships of Climatic and Hydrological Droughts in the Jialing River Basin, China.
title_full_unstemmed Changes and Relationships of Climatic and Hydrological Droughts in the Jialing River Basin, China.
title_short Changes and Relationships of Climatic and Hydrological Droughts in the Jialing River Basin, China.
title_sort changes and relationships of climatic and hydrological droughts in the jialing river basin china
url http://europepmc.org/articles/PMC4636145?pdf=render
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AT huaiweisun changesandrelationshipsofclimaticandhydrologicaldroughtsinthejialingriverbasinchina
AT leiye changesandrelationshipsofclimaticandhydrologicaldroughtsinthejialingriverbasinchina
AT jianqingzhai changesandrelationshipsofclimaticandhydrologicaldroughtsinthejialingriverbasinchina