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CARBON SEQUESTRATION STUDIES UNDER MAJOR CROPS IN NALGONDA DISTRICT USING REMOTE SENSING AND GIS

KrishiKosh

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Title CARBON SEQUESTRATION STUDIES UNDER MAJOR CROPS IN NALGONDA DISTRICT USING REMOTE SENSING AND GIS
 
Creator GOPAL REDDY, D
 
Contributor JAYASREE, G
 
Subject CARBON, SEQUESTRATION, STUDIES, UNDER, MAJOR, CROPS, NALGONDA DISTRICT, USING, REMOTE, SENSING, GIS
 
Description A study has been conducted to delineate the major crops grown in
Nalgonda district, Andhra Pradesh to estimate the soil organic carbon density and to
find out the relationship between soil organic carbon and spectral reflectance from
the soil. A total of 31 sites were chosen based on the soil resource map produced by
NBSS & LUP and samples were collected from the profiles dug up to 1 m depth
both before sowing and after harvest of the kharif crops. Delineation of the crops
was done by using LISS-III (August, November – 2005) and AWiFS (February –
2006) data with the help of ERDAS IMAGINE software. Soil organic carbon
density was calculated by using the values of organic carbon content, bulk density
and depth of the individual layer in the profile. Spectral reflectance was taken from
completely dried soil samples with the help of ASD Fieldspec full range
Spectroradiometer. Soil samples were analyzed for different physical, physicochemical
and chemical properties. Major crops i e., paddy, castor, redgram and
cotton grown in the study area were delineated. The overall classification accuracy
for all the classes was 85.71 percent and the overall kappa statistics obtained was
0.8379. The change in soil organic carbon density was found more in the sparsely
vegetated forest lands than in cultivated crop lands. Among the cultivated crop lands
the change in soil organic carbon density was found to be more in castor-redgram
cropping system. The spectral reflectance from the soil revealed that finely sieved
sample showed higher reflectance than the unsieved coarse sample. A significant
negative correlation was observed between spectral reflectance and organic carbon
content for both sieved and unsieved samples. The wavelength bands ranging from
1335 – 1350 and 1450 – 1800 nm were found to be sensitive for detection of organic
carbon.
 
Date 2016-08-16T14:13:42Z
2016-08-16T14:13:42Z
2006
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/72594
 
Language en
 
Relation D7836;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD