Synergistic effect of drought and rainfall events of different patterns on watershed systems

Abstract The increase in extreme climate events such as flooding and droughts predicted by the general circulation models (GCMs) is expected to significantly affect hydrological processes, erosive dynamics, and their associated nonpoint source (NPS) pollution, resulting in a major challenge to water...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Jiali Qiu, Zhenyao Shen, Guoyong Leng, Guoyuan Wei
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9ff1fa431115436a83eea257d8ff5b5c
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:9ff1fa431115436a83eea257d8ff5b5c
record_format	dspace
spelling	oai:doaj.org-article:9ff1fa431115436a83eea257d8ff5b5c2021-12-02T15:14:55ZSynergistic effect of drought and rainfall events of different patterns on watershed systems10.1038/s41598-021-97574-z2045-2322https://doaj.org/article/9ff1fa431115436a83eea257d8ff5b5c2021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-97574-zhttps://doaj.org/toc/2045-2322Abstract The increase in extreme climate events such as flooding and droughts predicted by the general circulation models (GCMs) is expected to significantly affect hydrological processes, erosive dynamics, and their associated nonpoint source (NPS) pollution, resulting in a major challenge to water availability for human life and ecosystems. Using the Hydrological Simulation Program–Fortran model, we evaluated the synergistic effects of droughts and rainfall events on hydrology and water quality in an upstream catchment of the Miyun Reservoir based on the outputs of five GCMs. It showed substantial increases in air temperature, precipitation intensity, frequency of heavy rains and rainstorms, and drought duration, as well as sediment and nutrient loads in the RCP 8.5 scenario. Sustained droughts followed by intense precipitation could cause complex interactions and mobilize accumulated sediment, nutrients and other pollutants into surface water that pose substantial risks to the drinking water security, with the comprehensive effects of soil water content, antecedent drought duration, precipitation amount and intensity, and other climate characteristics, although the effects varied greatly under different rainfall patterns. The Methods and findings of this study evidence the synergistic impacts of droughts and heavy rainfall on watershed system and the significant effects of initial soil moisture conditions on water quantity and quality, and help to guide a robust adaptive management system for future drinking water supply.Jiali QiuZhenyao ShenGuoyong LengGuoyuan WeiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-18 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jiali Qiu Zhenyao Shen Guoyong Leng Guoyuan Wei Synergistic effect of drought and rainfall events of different patterns on watershed systems
description	Abstract The increase in extreme climate events such as flooding and droughts predicted by the general circulation models (GCMs) is expected to significantly affect hydrological processes, erosive dynamics, and their associated nonpoint source (NPS) pollution, resulting in a major challenge to water availability for human life and ecosystems. Using the Hydrological Simulation Program–Fortran model, we evaluated the synergistic effects of droughts and rainfall events on hydrology and water quality in an upstream catchment of the Miyun Reservoir based on the outputs of five GCMs. It showed substantial increases in air temperature, precipitation intensity, frequency of heavy rains and rainstorms, and drought duration, as well as sediment and nutrient loads in the RCP 8.5 scenario. Sustained droughts followed by intense precipitation could cause complex interactions and mobilize accumulated sediment, nutrients and other pollutants into surface water that pose substantial risks to the drinking water security, with the comprehensive effects of soil water content, antecedent drought duration, precipitation amount and intensity, and other climate characteristics, although the effects varied greatly under different rainfall patterns. The Methods and findings of this study evidence the synergistic impacts of droughts and heavy rainfall on watershed system and the significant effects of initial soil moisture conditions on water quantity and quality, and help to guide a robust adaptive management system for future drinking water supply.
format	article
author	Jiali Qiu Zhenyao Shen Guoyong Leng Guoyuan Wei
author_facet	Jiali Qiu Zhenyao Shen Guoyong Leng Guoyuan Wei
author_sort	Jiali Qiu
title	Synergistic effect of drought and rainfall events of different patterns on watershed systems
title_short	Synergistic effect of drought and rainfall events of different patterns on watershed systems
title_full	Synergistic effect of drought and rainfall events of different patterns on watershed systems
title_fullStr	Synergistic effect of drought and rainfall events of different patterns on watershed systems
title_full_unstemmed	Synergistic effect of drought and rainfall events of different patterns on watershed systems
title_sort	synergistic effect of drought and rainfall events of different patterns on watershed systems
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/9ff1fa431115436a83eea257d8ff5b5c
work_keys_str_mv	AT jialiqiu synergisticeffectofdroughtandrainfalleventsofdifferentpatternsonwatershedsystems AT zhenyaoshen synergisticeffectofdroughtandrainfalleventsofdifferentpatternsonwatershedsystems AT guoyongleng synergisticeffectofdroughtandrainfalleventsofdifferentpatternsonwatershedsystems AT guoyuanwei synergisticeffectofdroughtandrainfalleventsofdifferentpatternsonwatershedsystems
_version_	1718387587904700416

Synergistic effect of drought and rainfall events of different patterns on watershed systems

Ejemplares similares