Refine your search
Collections
Co-Authors
Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Mandal, D.
- Permissible Soil Loss Limits for Different Physiographic Regions of West Bengal
Abstract Views :315 |
PDF Views:89
Authors
Affiliations
1 Central Soil and Water Conservation Research and Training Institute, Research Centre, Sunabeda 763 002, IN
2 Central Soil and Water Conservation Research and Training Institute, 218, Kaulagarh Road, Dehradun 248 195, IN
3 Water Technology Centre, Indian Agricultural Research Institute, New Delhi 110 012, IN
1 Central Soil and Water Conservation Research and Training Institute, Research Centre, Sunabeda 763 002, IN
2 Central Soil and Water Conservation Research and Training Institute, 218, Kaulagarh Road, Dehradun 248 195, IN
3 Water Technology Centre, Indian Agricultural Research Institute, New Delhi 110 012, IN
Source
Current Science, Vol 107, No 4 (2014), Pagination: 665-670Abstract
Land degradation due to water erosion is a major impediment for optimum land productivity in West Bengal (WB). Sustainable development of the state needs appropriate land-use planning taking into account the heterogeneity in soil and land resources. In this study, the maximum permissible soil loss rates (T values) were computed for 115 mapping units of WB by integrating the most sensitive soil indicators such as infiltration rate, bulk density, water stable aggregates, organic carbon and fertility status to assess soil quality governing soil resistibility to erosion. For each mapping unit, indicator soil attribute values were quantitatively expressed in the 0 to 1 scale and an aggregate score was computed from the attribute scores and the corresponding weights. The results suggested a wide difference in the T values among the regions and mapping units, with values ranging from 2.5 to 12.5 Mg ha-1 yr-1. In the state as a whole, about 88% of the area has 'T' value of 12.5 Mg ha-1 yr-1. The relatively plain lands in the Indo-Gangetic plain, coastal and delta plain and the Bengal basin have a higher soil loss tolerance of about 4.0 Mg ha-1 yr-1 than the hilly and undulating regions in the Eastern Himalaya and Eastern plateau regions. The information generated will serve as a useful guide for devising differential conservation and resource use plans on the basis of soil resource potential.Keywords
Biophysical Model, Physiographic Regions, Soil Erosion, Soil Conservation Planning.- Watershed-Scale Runoff-Erosion-Carbon Flux Dynamics: Current Scope and Future Direction of Research
Abstract Views :256 |
PDF Views:92
Authors
S. Patra
1,
D. Mandal
1,
P. K. Mishra
1,
P. R. Ojasvi
1,
G. Kumar
1,
R. Kaushal
1,
N. M. Alam
1,
P. K. Mishra
2,
J. P. Patra
2
Affiliations
1 ICAR-Indian Institute of Soil and Water Conservation, Dehradun 248 195, IN
2 National Institute of Hydrology, Roorkee, IN
1 ICAR-Indian Institute of Soil and Water Conservation, Dehradun 248 195, IN
2 National Institute of Hydrology, Roorkee, IN