ASSESSMENT OF PERMISSIBLE SOIL LOSS IN INDIA EMPLOYING A QUANTATIVE BIO- PHYSICAL METHOD
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Title |
ASSESSMENT OF PERMISSIBLE SOIL LOSS IN INDIA EMPLOYING A QUANTATIVE BIO- PHYSICAL METHOD
Not Available |
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Creator |
D MANDAL
VN SHARDA |
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Subject |
BIOPHYSICAL MODEL, CONSERVATION PLANNING, PERMISSIBLE EROSION, SOIL DEGRADATION, SOIL SUSTAINABILITY
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Description |
Not Available
SOIL DEGRADATION IN ALL ITS NEFARIOUS FORMS HAS SERIOUS REPERCUSSIONS ON CROP AND BIOMASS PRODUCTIVITY . ASSESSMENT OF SOIL LOSS TOLERANCE LIMITS ( SLTLs) ( PERMISSIBLE SOIL LOSS) SERVES AS A TOOL TO GAUGE THE POTENTIAL EROSION RISK IN A GIVEN AREA WITH REGARD TO LONG- TERM SUSTAINABILITY. IN THIS COMMUNICATION, SLTLs IN DIFFERENT STATES IN INDIA AND AT THE NATIONAL LEVEL HAVE QUANTITATIVELY ESTIMATED BY EMPLOYING A BIO- PHYSICAL MODEL BASED UPON INTEGRATION OF RELEVANT ATTRIBUTES. THE ANALYSIS HAS INDICATED THAT SOIL LOSS TOLERANCE OR T- VALUES VARIES FROM 2.5 TO 12.5 Mg ha-1 yr-1 DEPENDING UPON SOIL QUALITY GOVERNING SOIL RESISTIBILITY TO EROSION AND DEPTH AT A PARTICULAR LOCATION. ABOUT 57% OF THE AREA IN THE COUNTRY HAS PERMISSIBLE SOIL LOSS OF LESS THAN 10.0 Mg ha-1 yr-1 , WHICH NEEDS TO BE TREATED WITH APPROPRIATE CONSERVATION MEASURES. HIGHEST PRIORITY NEEDS TO BE ACCORDED TO ABOUT 7.5% AREA WHERE THE T- VALUE IS ONLY 2.5 Mg ha-1 yr-1 DUE TO SOIL QUALITY CONSTRAINTS. THE METHODOLOGY AND FRAMEWORK DEVELOPED FOR ESTIMATING T- VALUES HAS THE POTENTIAL TO BE APPLIED IN DIFFERENT REGIONS OR COUNTRIES OF THE WORLD. THE RELATIVE EFFICACY OF THE PRESENT METHOD WAS TESTED WITH PRODUCTIVITY INDEX- BASED APPROACH. CASE STUDY EVIDENCES IN DIFFERENT WATERSHEDS REVEALED THAT SOIL PRODUCTIVITY CAN BE MAINTAINED AT SUSTAINABLE LEVELS BY BRINGING THE EROSION RATE WITHIN TOLERANCE LIMIT. Not Available |
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Date |
2021-02-01T04:41:47Z
2021-02-01T04:41:47Z 2011-02-01 |
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Type |
Research Paper
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Identifier |
Not Available
Not Available http://krishi.icar.gov.in/jspui/handle/123456789/45165 |
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Language |
English
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Relation |
Not Available;
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Publisher |
Not Available
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