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Modeling of water induced surface soil erosion and the potential risk zone prediction in a sub-tropical watershed of Eastern India
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Modeling of water induced surface soil erosion and the potential risk zone prediction in a sub-tropical watershed of Eastern India
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Journal Article
Modeling of water induced surface soil erosion and the potential risk zone prediction in a sub-tropical watershed of Eastern India
2019
Overview
Soil is the earth’s fragile skin that anchors all life on earth. Half of the topsoil on the planet has been lost in the last 150 years. Land degradation due to soil loss is one of the major environmental concerns which can be influences by the natural as well as anthropogenic activities. These impacts include compaction, loss of soil structure, nutrient degradation, and soil salinity. The effects of soil erosion go beyond the loss of fertile land. It has led to increased pollution and sedimentation in streams and rivers. And degraded lands are also often less able to hold onto water which can worsen flooding. Revised Universal soil Loss Equation (RUSLE) model and integration with Geographical Information System (GIS) have been taken into consideration for estimating the average annual soil loss in Arkosa watershed. The Overlay Analysis technique have been adopted in RUSLE model for estimating the influences of different factors namely rainfall and runoff erosivity factor (R), soil erodibility factor (K), slope length and steepness factor (LS), cover and management factor (C) and support practice factor (P) etc. The average annual soil loss of Arkosa watershed ranged between 0 to 10 tons/ha/year. Here the combined index method has been adopted to show the impact spatially of combine index of these five factors, i.e., R, K, LS, C and P. Apart from this there are total 29 points have been selected randomly for securing that the present soil loss model sounded with ground reality or not. The actual soil loss and predicted soil loss show the positive relationship with them in an r2 value of 0.882. Besides this the present study provides a reliable prediction for future on potential soil erosion risk zones which ranged between 0 and 16 tons/ha/year. To overcome from extreme or severe soil loss situation suitable soil conservation practices or support practices have to be taken care off for minimizing the erosion of the fertile soil or the top soil for making the region less vulnerable from soil erosion in present rate. Sustainable land use can help to reduce the impact of agriculture and livestock, preventing the soil degradation and erosion and the loss of valuable land to deforestation.
Publisher
Springer International Publishing,Springer Nature B.V
Subject
/ Chemistry and Earth Sciences
/ Earth
/ Earth and Environmental Science
/ Flooding
/ Geographic information systems
/ Geographical information systems
/ Land use
/ Math. Appl. in Environmental Science
/ Mathematical Applications in the Physical Sciences
/ Physics
/ Rain
/ Rainfall
/ Rivers
/ Runoff
/ Satellite navigation systems
/ Skin
/ Slopes
/ Topsoil
