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
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Creator |
GOPAL REDDY, D
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Contributor |
JAYASREE, G
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Subject |
CARBON, SEQUESTRATION, STUDIES, UNDER, MAJOR, CROPS, NALGONDA DISTRICT, USING, REMOTE, SENSING, GIS
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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. |
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Date |
2016-08-16T14:13:42Z
2016-08-16T14:13:42Z 2006 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/72594
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Language |
en
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Relation |
D7836;
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Format |
application/pdf
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Publisher |
ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD
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