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Prioritization and field validation of erosion risk areas for combating land degradation in North Western Himalayas

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Title Prioritization and field validation of erosion risk areas for combating land degradation in North Western Himalayas
Not Available
 
Creator V.N. Sharda,
Debashis Mandal,
 
Subject Soil erosion Targeted erosion rates Priority areas Field verification Soil conservation strategies
 
Description Not Available
Appropriate soil conservation practices are essentially required in Indian Himalayan region to prevent degradation
of natural resources. Thus erosion priority risk areas need to be identified to efficiently plan and
execute conservation programmes. This study envisages to develop a strategy based upon the concept of partial
area treatment by classifying erosion risk areas and prioritizing them upon the basis of existing erosion rates with
targeted soil loss limits (T-value). The hypothesis is that highest priority for conservation action should go to
such areas where the difference between potential erosion rate and the targeted limit is maximum so that
available financial resources are efficiently utilized. The analysis indicated that about 25% of the total land area
(TLA) in the north-western Himalayan region falls under severe or very severe erosion risk categories, especially
where steeply sloping lands are under cultivation or overgrazed for decades. Only about 13% of TLA has T-value
of> 10 Mg ha−1 yr−1 while about 30% area of the area is less prone to soil erosion. Within the region,
Uttarakhand state has highest erosion risk area (58%) followed by Himachal Pradesh (48.5%). The concept of
prioritization of erosion risk areas and their treatment with appropriate conservation measures was validated
with the field data collected from two representative watersheds in the Himalayan region. The present approach
can be easily extrapolated to other agro-climatic regions of the country to develop conservation master plans for
efficient utilization of limited financial resources on sustainable basis.
Not Available
 
Date 2020-06-12T10:23:03Z
2020-06-12T10:23:03Z
2017-12-27
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/37130
 
Language English
 
Relation Not Available;
 
Publisher Not Available