The effects of salinity on changes in characteristics of soils collected in a saline region of the Mekong Delta, Vietnam

Due to the impacts of climate change and the reduction in the flow of the Mekong River, saline intrusion into the inland has been an emergent and pressing issue. The purpose of this study is to analyze the effects of various saline conditions (0–25‰) on changes in some soil properties under laborato...

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Auteurs principaux:	Van Tan Lam, Thanh Tran
Format:	article
Langue:	EN
Publié:	De Gruyter 2021
Sujets:	salinity intrusion saline soils sodicization mekong delta Chemistry QD1-999
Accès en ligne:	https://doaj.org/article/4e162ab356c3411d90651f5a8fc9fbdc
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id	oai:doaj.org-article:4e162ab356c3411d90651f5a8fc9fbdc
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spelling	oai:doaj.org-article:4e162ab356c3411d90651f5a8fc9fbdc2021-12-05T14:10:43ZThe effects of salinity on changes in characteristics of soils collected in a saline region of the Mekong Delta, Vietnam2391-542010.1515/chem-2021-0037https://doaj.org/article/4e162ab356c3411d90651f5a8fc9fbdc2021-04-01T00:00:00Zhttps://doi.org/10.1515/chem-2021-0037https://doaj.org/toc/2391-5420Due to the impacts of climate change and the reduction in the flow of the Mekong River, saline intrusion into the inland has been an emergent and pressing issue. The purpose of this study is to analyze the effects of various saline conditions (0–25‰) on changes in some soil properties under laboratory conditions. Ten topsoil samples were collected from a depth of 0–20 cm in the dry seasons in the rice–corn rotation fields with low salinity, in Thanh Phu district, Ben Tre province, Vietnam. The examined criteria consisted of soil pH, soil electrical conductivity of the saturated paste extract (ECe), exchangeable Na, percentage of exchangeable Na, and content (%) of nitrogen and phosphorus. The results revealed that the pH range of soil decreased from 5.14–5.72 to 4.08–5.14 when the soil salinity increased from 0 to 25‰. At the salinity of 10‰ and higher, the available nitrogen began to decline. Meanwhile, the available phosphorus tended to decrease as the salinity increased past 12‰. Some measures are also discussed, with the aim of ensuring sustainable rice farming in the circumstances of increased salinity.Van Tan LamThanh TranDe Gruyterarticlesalinity intrusionsaline soilssodicizationmekong deltaChemistryQD1-999ENOpen Chemistry, Vol 19, Iss 1, Pp 471-480 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	salinity intrusion saline soils sodicization mekong delta Chemistry QD1-999
spellingShingle	salinity intrusion saline soils sodicization mekong delta Chemistry QD1-999 Van Tan Lam Thanh Tran The effects of salinity on changes in characteristics of soils collected in a saline region of the Mekong Delta, Vietnam
description	Due to the impacts of climate change and the reduction in the flow of the Mekong River, saline intrusion into the inland has been an emergent and pressing issue. The purpose of this study is to analyze the effects of various saline conditions (0–25‰) on changes in some soil properties under laboratory conditions. Ten topsoil samples were collected from a depth of 0–20 cm in the dry seasons in the rice–corn rotation fields with low salinity, in Thanh Phu district, Ben Tre province, Vietnam. The examined criteria consisted of soil pH, soil electrical conductivity of the saturated paste extract (ECe), exchangeable Na, percentage of exchangeable Na, and content (%) of nitrogen and phosphorus. The results revealed that the pH range of soil decreased from 5.14–5.72 to 4.08–5.14 when the soil salinity increased from 0 to 25‰. At the salinity of 10‰ and higher, the available nitrogen began to decline. Meanwhile, the available phosphorus tended to decrease as the salinity increased past 12‰. Some measures are also discussed, with the aim of ensuring sustainable rice farming in the circumstances of increased salinity.
format	article
author	Van Tan Lam Thanh Tran
author_facet	Van Tan Lam Thanh Tran
author_sort	Van Tan Lam
title	The effects of salinity on changes in characteristics of soils collected in a saline region of the Mekong Delta, Vietnam
title_short	The effects of salinity on changes in characteristics of soils collected in a saline region of the Mekong Delta, Vietnam
title_full	The effects of salinity on changes in characteristics of soils collected in a saline region of the Mekong Delta, Vietnam
title_fullStr	The effects of salinity on changes in characteristics of soils collected in a saline region of the Mekong Delta, Vietnam
title_full_unstemmed	The effects of salinity on changes in characteristics of soils collected in a saline region of the Mekong Delta, Vietnam
title_sort	effects of salinity on changes in characteristics of soils collected in a saline region of the mekong delta, vietnam
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/4e162ab356c3411d90651f5a8fc9fbdc
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The effects of salinity on changes in characteristics of soils collected in a saline region of the Mekong Delta, Vietnam

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