Evaluating the impacts of environmental factors on soil moisture temporal dynamics at different time scales

Soil moisture displays complex spatiotemporal patterns across scales, making it important to disentangle the impacts of environmental factors on soil moisture temporal dynamics at different time scales. This study evaluated the factors affecting soil moisture dynamics at different time scales using...

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Autores principales:	Qi Chai, Tiejun Wang, Chongli Di
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	climate empirical mode decomposition soil soil moisture temporal scale Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/e0b3b8484fd64666957b517b4d66cc37
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spelling	oai:doaj.org-article:e0b3b8484fd64666957b517b4d66cc372021-11-05T18:31:01ZEvaluating the impacts of environmental factors on soil moisture temporal dynamics at different time scales2040-22442408-935410.2166/wcc.2020.011https://doaj.org/article/e0b3b8484fd64666957b517b4d66cc372021-03-01T00:00:00Zhttp://jwcc.iwaponline.com/content/12/2/420https://doaj.org/toc/2040-2244https://doaj.org/toc/2408-9354Soil moisture displays complex spatiotemporal patterns across scales, making it important to disentangle the impacts of environmental factors on soil moisture temporal dynamics at different time scales. This study evaluated the factors affecting soil moisture dynamics at different time scales using long-term soil moisture data obtained from Nebraska and Utah. The empirical mode decomposition method was employed to decompose soil moisture time series into different temporal components with several intrinsic mode functions (IMFs) and one residual component. Results showed that the percent variance contribution (PVC) of IMFs to the total soil moisture temporal variance tended to increase for the IMFs with longer time periods. It indicated that the long-term soil moisture variations in study regions were mainly determined by low-temporal frequency signals related to seasonal climate and vegetation variations. Besides, the PVCs at short- and medium-temporal ranges were positively correlated with climate dryness, while negatively at longer temporal ranges. Moreover, the results suggested that the impact of climate on soil moisture dynamics at different time scales might vary across different climate zones, while soil effect was comparatively less in both regions. It provides additional insights into understanding soil moisture temporal dynamics in regions with contrasting climatic conditions.Qi ChaiTiejun WangChongli DiIWA Publishingarticleclimateempirical mode decompositionsoilsoil moisturetemporal scaleEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENJournal of Water and Climate Change, Vol 12, Iss 2, Pp 420-432 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	climate empirical mode decomposition soil soil moisture temporal scale Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	climate empirical mode decomposition soil soil moisture temporal scale Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Qi Chai Tiejun Wang Chongli Di Evaluating the impacts of environmental factors on soil moisture temporal dynamics at different time scales
description	Soil moisture displays complex spatiotemporal patterns across scales, making it important to disentangle the impacts of environmental factors on soil moisture temporal dynamics at different time scales. This study evaluated the factors affecting soil moisture dynamics at different time scales using long-term soil moisture data obtained from Nebraska and Utah. The empirical mode decomposition method was employed to decompose soil moisture time series into different temporal components with several intrinsic mode functions (IMFs) and one residual component. Results showed that the percent variance contribution (PVC) of IMFs to the total soil moisture temporal variance tended to increase for the IMFs with longer time periods. It indicated that the long-term soil moisture variations in study regions were mainly determined by low-temporal frequency signals related to seasonal climate and vegetation variations. Besides, the PVCs at short- and medium-temporal ranges were positively correlated with climate dryness, while negatively at longer temporal ranges. Moreover, the results suggested that the impact of climate on soil moisture dynamics at different time scales might vary across different climate zones, while soil effect was comparatively less in both regions. It provides additional insights into understanding soil moisture temporal dynamics in regions with contrasting climatic conditions.
format	article
author	Qi Chai Tiejun Wang Chongli Di
author_facet	Qi Chai Tiejun Wang Chongli Di
author_sort	Qi Chai
title	Evaluating the impacts of environmental factors on soil moisture temporal dynamics at different time scales
title_short	Evaluating the impacts of environmental factors on soil moisture temporal dynamics at different time scales
title_full	Evaluating the impacts of environmental factors on soil moisture temporal dynamics at different time scales
title_fullStr	Evaluating the impacts of environmental factors on soil moisture temporal dynamics at different time scales
title_full_unstemmed	Evaluating the impacts of environmental factors on soil moisture temporal dynamics at different time scales
title_sort	evaluating the impacts of environmental factors on soil moisture temporal dynamics at different time scales
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/e0b3b8484fd64666957b517b4d66cc37
work_keys_str_mv	AT qichai evaluatingtheimpactsofenvironmentalfactorsonsoilmoisturetemporaldynamicsatdifferenttimescales AT tiejunwang evaluatingtheimpactsofenvironmentalfactorsonsoilmoisturetemporaldynamicsatdifferenttimescales AT chonglidi evaluatingtheimpactsofenvironmentalfactorsonsoilmoisturetemporaldynamicsatdifferenttimescales
_version_	1718444133891178496

Evaluating the impacts of environmental factors on soil moisture temporal dynamics at different time scales

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