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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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        Abstract - Issue Mar 2013, 34 (2)                                                                                                             Back



nstantaneous and historical temperature effects on a-pinene

Identification of soil erosion risk areas for conservation
planning in different states of India

 

V.N. Sharda, Debashis Mandal* and P.R. Ojasvi

Central Soil and Water Conservation Research and Training Institute, Dehradun-248 195, India

*Corresponding Author email : dmandalcswcrti@gmail.com

 

 

 

 

Publication Data

Paper received:

23 September 2011

 

Revised received:

01 February 2012

 

Accepted:

22 March 2012

 

Abstract

Assessment of soil erosion risks, especially in the developing countries, is a challenging task mainly due to non-availability or insufficiency of relevant data.? In this paper, the soil erosion risks have been estimated by integrating the spatial data on potential erosion rates and soil loss tolerance limits for conservation planning at state level in India.? The erosion risk classes have been prioritized based upon the difference between the prevailing erosion rates and the permissible erosion limits.? The analysis revealed that about 50% of total geographical area (TGA) of India, falling in five priority erosion risk classes, requires different intensity of conservation measures though about 91% area suffers from potential erosion rates varying from < 5 to > 40 t ha-1yr-1.? Statewise analysis indicated that Andhra Pradesh, Maharashtra and Rajasthan share about 75% of total area under priority Class 1 (6.4 M ha) though they account for only 19.4% of the total area (36.2 M ha) under very severe potential erosion rate category (> 40 t ha-1yr-1).? It was observed that about 75% of total geographical area (TGA) in the states of Bihar, Gujarat, Haryana, Kerala and Punjab does not require any specific soil conservation measure as the potential erosion rates are well within the tolerance limits.? The developed methodology can be successfully employed for prioritization of erosion risk areas at watershed, region or country level.????????????

 

Key words

Erosion risk, Soil sustainability, Potential erosion rate, Soil conservation

 

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