Modeling Soil Organic Carbon Dynamics Under Two Cropping Modes in Salinized Paddy Fields

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Understanding soil organic carbon (SOC) dynamics in salinized paddy fields is critical for improving soil fertility and mitigating climate change impacts. This study models the temporal and spatial variations of SOC under two distinct cropping modes—continuous rice cultivation and rice–wheat rotation—using process-based and empirical modeling approaches. Results indicate that salinity levels significantly influence SOC stabilization, microbial activity, and carbon sequestration efficiency. Continuous flooding in monocropped rice systems enhances anaerobic carbon preservation, while the alternating wet–dry conditions in rice–wheat systems stimulate organic matter decomposition but promote better nutrient cycling. The model integrates soil physicochemical parameters, crop residue inputs, and salinity gradients to simulate carbon turnover and predict long-term SOC trends. Findings highlight that appropriate cropping mode selection and salinity management can synergistically enhance carbon sequestration potential and soil health in degraded paddy ecosystems. These insights provide a foundation for developing sustainable land-use strategies in saline-affected agricultural regions.

#SoilOrganicCarbon #SalinizedPaddyFields #CroppingModes #CarbonModeling #SoilHealth #SustainableAgriculture #RiceWheatRotation #CarbonSequestration #SoilFertility #ClimateChangeMitigation #SoilMicrobes #SoilSalinity #AgroecosystemModeling #GreenAgriculture #SoilRestoration #SoilCarbonStorage #SustainableFarming #SoilEcosystem #AgriculturalModeling #SoilSustainability





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