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http://krishi.icar.gov.in/jspui/handle/123456789/36025
Title: | ESTABLISHING PERMISSIBLE EROSION RATES FOR VARIOUS LANDFORMS IN DELHI STATE, INDIA |
Other Titles: | Not Available |
Authors: | P. JHA, H. C. NITANT AND D. MANDAL |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | ICAR::Indian Institute of Soil and Water Conservation |
Published/ Complete Date: | 2009-01-01 |
Project Code: | Not Available |
Keywords: | erosion; soil loss tolerance; soil groups; Delhi State; India; conservation planning |
Publisher: | Not Available |
Citation: | Not Available |
Series/Report no.: | Not Available; |
Abstract/Description: | Permissible erosion rate also known as soil loss tolerance (‘T’ value) is defined as maximum erosion that can take place on a given soil without degrading its long-term productivity. In India, default ‘T’ value of 11 2Mgha 1 y 1 is used for devising land restoration strategies for different types of soils. However, ability of soil to resist degradation varies with soil type, depth and physico-chemical characteristics. Therefore, the present investigation was undertaken to determine ‘T’ value of different landforms of Delhi State by taking into account the soil saturated hydraulic conductivity (SHC), bulk density (BD), organic carbon, erodibility and soil pH. Soil state was defined by a quantitative model and scaling functions were used to convert soil parameters to a 0–1 scale. The normalised values were multiplied by appropriate weighting factors based on relative importance and sensitivity analysis of each indicator. Categorical rankings of I, II or III were assigned to soil groups based on overall aggregate score. ‘T’ value of different landforms of Delhi State was computed using the guideline of USDA-Natural Resource Conservation Services. Majority of landforms of Delhi had ‘T’ value of 12 5Mg ha 1 y 1, except for the soils of hill terrain, dissected hill, pediment and piedmont plain, where ‘T’ value ranged from 5 to 10Mg ha 1 y 1. These ‘T’ values could be used for conservation planning and will help the planners in devising suitable land restoration strategies |
Description: | Not Available |
ISSN: | Not Available |
Type(s) of content: | Research Paper |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Land Degradation and Development |
NAAS Rating: | 9.78 |
Volume No.: | 20 |
Page Number: | 92–100 |
Name of the Division/Regional Station: | Not Available |
Source, DOI or any other URL: | Not Available |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/36025 |
Appears in Collections: | NRM-IISS-Publication |
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