Effect of salinity and soil aggregate size on microbial community involved in carbon and nitrogen cycling

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Soil salinity and aggregate size play a crucial role in shaping microbial communities responsible for carbon and nitrogen cycling, thereby influencing soil health and ecosystem functioning. High salinity levels often reduce microbial diversity and activity, limiting the decomposition of organic matter and altering nitrogen transformations such as mineralization, nitrification, and denitrification. Conversely, soil aggregates of varying sizes create heterogeneous microhabitats that protect microbes from environmental stress and regulate oxygen and nutrient diffusion. Larger aggregates generally harbor more diverse microbial consortia involved in stable carbon sequestration, while smaller aggregates support faster turnover of carbon and nitrogen. The combined effect of salinity stress and aggregate size can lead to significant shifts in microbial structure and function, ultimately impacting soil fertility, greenhouse gas emissions, and crop productivity. Understanding these interactions is vital for developing sustainable soil management strategies under salinity stress conditions.

#SoilHealth #SalinityStress #SoilAggregates #MicrobialDiversity #CarbonCycling #NitrogenCycling #SoilFertility #EcosystemFunctioning #SoilMicrobiology #SustainableAgriculture





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