Soil Characteristics in the Disturbed and Undisturbed Plots of a Sal (Shorea robusta) Forest in the Shiwaliks of Indian Himalayan Region
2018
Sharma, Swanti | Arunachalam, Kusum | Arunachalam, A.
In the Uttarakhand Shiwaliks, tropical moist forests dominate and amongst the dominant trees, Shorea robusta marks maximum abundance that governs the quality of soil in theregion and enables net primary productivity. Sal tree has good leaf area to harness carbon from the atmosphere and accumulate in their biomass leading to carbon sequestration.Reportedly, litter fall rate is substantial to add much organic matter in to the soil through decomposition process. Eventually, the soils in the sal forests shall provide a good habitatfor decomposing microorganisms that mineralize the nutrients and also helps in the accumulation of Soil organic carbon in a much more labile form. Understanding the soil properties following forest disturbances is important for developing strategies for the restoration and management of degraded lands. The present study was conducted in a sal forest at two soil depths (0-5 and 5-15 cm) in a disturbed and undisturbed plot. The results revealed disturbance resulted in considerable increase in air temperature and light intensity in the forest and decline in the soil nutrients concentration. Correlation revealed that soil moisture content was negatively correlated with clay content in the disturbed plot, whereas they were positively correlated with each other in the undisturbed site. Soil organic carbon and soil nitrogen content were positively correlated with each other in both the study sites.
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