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Abstract
Determination Of Land Degradation Due To Tannery Effluent Using Remote Sensing and GIS
L. Iyappan
M.Tech Remote Sensing
Institute of Remote Sensing, Anna University, India
iyappan100@yahoo.co.in
Dr. M. Ramalingam
Asst. Professor
Institute of Remote Sensing, Anna University, India
Dr. E. Velappan
Senior Lecturer
Institute of Remote Sensing, Anna University, India
Abstract :
In the whole country, Tamil Nadu stands first in respect of tannery industries. These tanneries let out huge volume of tannery effluent(approximately 30 liters per kg of finished leather) in the open land and river system thus polluting the valuable cultivable soil and irrigation water sources making them unsuitable for cultivation. The wells situated adjacent and in some cases in far off places gradually get accumulated with the toxic salts of the tanneries through the underground water springs and channels by continuous seepage. When the affected water is used to irrigate the crop, the physiological effect on the crop depends upon the presence and concentration of the adverse salts resulting in poor or no yield, besides affecting the quality of the produce. Adding chemical compounds can alter the soil type and characteristics, concentration of the adverse salts resulting in poor no yield, besides affecting the quality of the produce. Adding chemical compounds can alter the soil type and characteristics.
An attempt has been made to estimate soil characteristics of the soil available in the land degraded due to tannery identified. In the locations with the help of GPS, soil samples collected.
Soil sample analyzed and the various constituents in the soil also estimated. A correlation model will be developed taking in to account the various constituents of the soil versus DN values of the satellite image
Using the above study it is also proposed to classify the land as severely, moderately, less and not degraded based on the severity of land degradation.
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