Journal
JOURNAL OF ENVIRONMENTAL MANAGEMENT
Volume 329, Issue -, Pages -Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2022.117083
Keywords
Soil salinization; Soil amelioration; Conditioner; Organic carbon; Microbial community
Categories
Ask authors/readers for more resources
This study investigated the effects of a conditioning agent and cultivating Jerusalem artichoke on saline soils in Inner Mongolia. The results showed that the application of the conditioning agent and planting Jerusalem artichoke can significantly reduce soil salinity, increase soil organic carbon fractions, and improve soil structure. Furthermore, it also alters the soil microbial community composition.
Soil salinization is a critical environmental issue restricting agricultural production. Inner Mongolia is one of the areas with severe land salinization in China. This study aimed to investigate the effects of conditioning agent (containing marlstone and a range of enzymes) and cultivating Jerusalem artichoke on saline soils in Inner Mongolia. The effects of conditioner (0, 0.06 and 0.18 kg/m2) on soil physical, chemical and biological prop-erties, including soil carbon fractions and microbiota in saline soils planted with Jerusalem artichoke, were characterized. The results showed that soil salinity was reduced significantly after cultivating Jerusalem arti-choke and declined also after the conditioner addition. The application of conditioner increased the content of DOC (dissolved organic carbon), HFOC (heavy fraction organic carbon) and the content of aggregates >0.25 mm compared to the soil planted with Jerusalem artichoke alone. The relative abundance of halophilic bacteria such as Thioalkalivibrio and Thiohalobacter was greater in the CK (non-treated control). By contrast, the relative abundance of microorganisms with the carbon assimilation and nitrogen fixation capacities, such as Cyanobac-teria and Rhodovulum, was greater in the conditioner-treated and Jerusalem artichoke-planted treatments. The planting of Jerusalem artichoke reduced soil salinity, increased soil organic carbon fractions, improved soil structure, and altered the soil microbial community, with the application of the conditioning agent enhancing these positive changes. The co-occurrence network structure of Jerusalem artichoke-conditioner-saline soil-soil microorganism was established, which provided scientific basis for Jerusalem artichoke-conditioner to improve saline soil.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available