Biogeochemical appraisal of carbon fractions and carbon stock in riparian soils of the Ganga River basin

Kumar, Sanchit; Anshumali,

doi:10.1016/j.apsoil.2022.104687

Cited by 4 publications

(1 citation statement)

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“…Soil microbial biomass carbon (SMBC) was measured using the Chloroform Fumigation Extraction (CFE) technique described by Anshumali and was appropriately modified 29 . 10 g dry weight equivalent of each soil sample was placed into a 25 ml beaker, which was placed into a vacuum desiccator with a new beaker containing 50 ml ethanol-free chloroform and a little zeolite.…”

Section: Methodsmentioning

confidence: 99%

Effects of aeolian deposition on soil properties and microbial carbon metabolism function in farmland of Songnen Plain, China

Mo,

Song,

Che

et al. 2024

Sci Rep

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The effects of wind erosion, one of the crucial causes of soil desertification in the world, on the terrestrial ecosystem are well known. However, ecosystem responses regarding soil microbial carbon metabolism to sand deposition caused by wind erosion, a crucial driver of biogeochemical cycles, remain largely unclear. In this study, we collected soil samples from typical aeolian deposition farmland in the Songnen Plain of China to evaluate the effects of sand deposition on soil properties, microbial communities, and carbon metabolism function. We also determined the reads number of carbon metabolism-related genes by high-throughput sequencing technologies and evaluated the association between sand deposition and them. The results showed that long-term sand deposition resulted in soil infertile, roughness, and dryness. The impacts of sand deposition on topsoil were more severe than on deep soil. The diversity of soil microbial communities was significantly reduced due to sand deposition. The relative abundances of Nitrobacteraceae, Burkholderiaceae, and Rhodanobacteraceae belonging to α-Proteobacteria significantly decreased, while the relative abundances of Streptomycetaceae and Geodermatophilaceae belonging to Actinobacteria increased. The results of the metagenomic analysis showed that the gene abundances of carbohydrate metabolism and carbohydrate-activity enzyme (GH and CBM) significantly decreased with the increase of sand deposition amount. The changes in soil microbial community structure and carbon metabolism decreased soil carbon emissions and carbon cycling in aeolian deposition farmland, which may be the essential reasons for land degradation in aeolian deposition farmland.

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Section: Methodsmentioning

confidence: 99%