Grassland soil moisture fluctuation and its relationship with evapotranspiration

Soil moisture is connected to atmospheric moisture through direct evaporation and vegetation transpiration. This is a complex process that is in focus of numerous hydrological studies. We used the long-term measurements from a typical farming-pastoral ecotone in northern Hebei Province of China to s...

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Autores principales:	Yusong Wang, Yonge Zhang, Xinxiao Yu, Guodong Jia, Ziqiang Liu, Libo Sun, Pengfei Zheng, Xuhui Zhu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Grassland Soil moisture fluctuation Evapotranspiration Water resources Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/9070c538071e4d879a5e8ddbed3f14c4
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id	oai:doaj.org-article:9070c538071e4d879a5e8ddbed3f14c4
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spelling	oai:doaj.org-article:9070c538071e4d879a5e8ddbed3f14c42021-12-01T05:00:33ZGrassland soil moisture fluctuation and its relationship with evapotranspiration1470-160X10.1016/j.ecolind.2021.108196https://doaj.org/article/9070c538071e4d879a5e8ddbed3f14c42021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X2100861Xhttps://doaj.org/toc/1470-160XSoil moisture is connected to atmospheric moisture through direct evaporation and vegetation transpiration. This is a complex process that is in focus of numerous hydrological studies. We used the long-term measurements from a typical farming-pastoral ecotone in northern Hebei Province of China to study the relationship between the daytime and nighttime fluctuations of grassland surface soil moisture and evapotranspiration. The results show that the surface soil of grassland above 60 cm is the main water consumption area, while below 60 cm is the main water storage area. The 80–100 cm layer responds to precipitation 263 h later than that of the 0–20 cm layer. In the 0–20 cm and 20–40 cm layers where the moisture fluctuation is more obvious, the moisture movement in the lower layer occurs on average 7.85 h after the upper layer. The fluctuations were digitalized, and they were significantly correlated with potential evapotranspiration and actual evapotranspiration. This research suggests that soil moisture is affected by evapotranspiration and thus it always moves upward in the surface soil. When the evapotranspiration is large, the amount of water transport increases and it suggests that the use soil moisture fluctuation signals can be used to reflect evapotranspiration. This research hopes to provide a reference for a precise analysis of soil and atmospheric water resources and their interactions.Yusong WangYonge ZhangXinxiao YuGuodong JiaZiqiang LiuLibo SunPengfei ZhengXuhui ZhuElsevierarticleGrasslandSoil moisture fluctuationEvapotranspirationWater resourcesEcologyQH540-549.5ENEcological Indicators, Vol 131, Iss , Pp 108196- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Grassland Soil moisture fluctuation Evapotranspiration Water resources Ecology QH540-549.5
spellingShingle	Grassland Soil moisture fluctuation Evapotranspiration Water resources Ecology QH540-549.5 Yusong Wang Yonge Zhang Xinxiao Yu Guodong Jia Ziqiang Liu Libo Sun Pengfei Zheng Xuhui Zhu Grassland soil moisture fluctuation and its relationship with evapotranspiration
description	Soil moisture is connected to atmospheric moisture through direct evaporation and vegetation transpiration. This is a complex process that is in focus of numerous hydrological studies. We used the long-term measurements from a typical farming-pastoral ecotone in northern Hebei Province of China to study the relationship between the daytime and nighttime fluctuations of grassland surface soil moisture and evapotranspiration. The results show that the surface soil of grassland above 60 cm is the main water consumption area, while below 60 cm is the main water storage area. The 80–100 cm layer responds to precipitation 263 h later than that of the 0–20 cm layer. In the 0–20 cm and 20–40 cm layers where the moisture fluctuation is more obvious, the moisture movement in the lower layer occurs on average 7.85 h after the upper layer. The fluctuations were digitalized, and they were significantly correlated with potential evapotranspiration and actual evapotranspiration. This research suggests that soil moisture is affected by evapotranspiration and thus it always moves upward in the surface soil. When the evapotranspiration is large, the amount of water transport increases and it suggests that the use soil moisture fluctuation signals can be used to reflect evapotranspiration. This research hopes to provide a reference for a precise analysis of soil and atmospheric water resources and their interactions.
format	article
author	Yusong Wang Yonge Zhang Xinxiao Yu Guodong Jia Ziqiang Liu Libo Sun Pengfei Zheng Xuhui Zhu
author_facet	Yusong Wang Yonge Zhang Xinxiao Yu Guodong Jia Ziqiang Liu Libo Sun Pengfei Zheng Xuhui Zhu
author_sort	Yusong Wang
title	Grassland soil moisture fluctuation and its relationship with evapotranspiration
title_short	Grassland soil moisture fluctuation and its relationship with evapotranspiration
title_full	Grassland soil moisture fluctuation and its relationship with evapotranspiration
title_fullStr	Grassland soil moisture fluctuation and its relationship with evapotranspiration
title_full_unstemmed	Grassland soil moisture fluctuation and its relationship with evapotranspiration
title_sort	grassland soil moisture fluctuation and its relationship with evapotranspiration
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/9070c538071e4d879a5e8ddbed3f14c4
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Grassland soil moisture fluctuation and its relationship with evapotranspiration

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