Direct and indirect impacts of ionic components of saline water on irrigated soil chemical and microbial processes
Article
Article Title | Direct and indirect impacts of ionic components of saline water on irrigated soil chemical and microbial processes |
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ERA Journal ID | 1715 |
Article Category | Article |
Authors | Chen, Lijuan (Author), Li, Changsheng (Author), Feng, Qi (Author), Wei, Yongping (Author), Zhao, Yan (Author), Zhu, Meng (Author) and Deo, Ravinesh C. (Author) |
Journal Title | Catena |
Journal Citation | 172, pp. 581-589 |
Number of Pages | 9 |
Year | 2019 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0341-8162 |
1872-6887 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.catena.2018.09.030 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0341816218303989 |
Abstract | The characteristics of ions in irrigation water can be significantly different in response to the changes in the salinity gradient. The chemical and biological processes of soils which were irrigated with this kind of water would therefore, be remarkably influenced. Based on the field sampling data and utilizing the Structural Equation Model (SEM), this paper aims to investigate the ionic characteristics of irrigation water and evaluate their direct and indirect impacts on soil salt ions, nutrients and microbial metabolic activities. The present results demonstrated that the ionic components of irrigation water had a direct influence on the soil salt ions. In particular, the Na+ concentrations in irrigation water were not only seen to significantly increase the soil Na+ concentrations but also change the other soil ions' concentrations. The contents of soil total nitrogen (TN), available phosphorus (Pava) and available potassium (Kava) appeared to change slightly with the increase of water salinity and meanwhile, no significant impact was found from any of the ions present in the irrigation water. Although high concentrations of Na+, Cl−, SO4 2−, Mg2+ and Ca2+ in irrigation water significantly drove the reduction of the soil organic carbon (OC), the direct influences were actually relatively small in this respect, and it was the increase of soil salt ions that dominantly led this reduction. Irrigation water with high salinity |
Keywords | saline water; salt ions; sodic soil; organic carbon; microbial activity |
ANZSRC Field of Research 2020 | 370201. Climate change processes |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Chinese Academy of Sciences, China |
University of Queensland | |
School of Agricultural, Computational and Environmental Sciences | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4xxv/direct-and-indirect-impacts-of-ionic-components-of-saline-water-on-irrigated-soil-chemical-and-microbial-processes
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