A. G. Koppad ¹, Pavan Tikhile ¹

Affiliations
1 Department of Agricultural Engineering, Agricultural College Bijapur -586101, Karnataka., IN

Abstract

The study was taken up in Mundgod taluka of UK (Uttara Kannada) district to assess the anthropogenic impact on forest resources. The forest area from 1989 to 2006 was analyzed using LANDSAT TM and ETM+ imageries in ERDAS IMAGINE and Arc GIS. The result revealed that the forest area in the year 1989 was 78.59% which was reduced to 64.65% in the year 2006 mainly due to human interference. There has been an increase in area under agriculture and water body. The detection of change in forest area was identified through NDVI maps. The increase in agricultural land was due to cultivation in forest land by cutting the trees, there by reduced the forest area. The trend of result indicated that the forest resources are decreasing year by year due to human activities.

Keywords

Remote Sensing, GIS, Satellite Imageries, NDVI, Anthropogenic Activities.

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A. G. Koppad ¹, Pavan Tikhile ¹

Affiliations
1 Department of Agricultural Engineering, College of Agriculture Bijapur, UAS, Dharwad, Karnataka, IN

Abstract

The topographical factors such as aspect and altitude play an important role on carbon sequestration process and soil organic carbon pool in forest soil. The study was conducted in Ankola taluka of Uttara Kannada district to assess the effect of aspect and altitude in dense and sparse forest on soil organic carbon pool. The result indicated that the western and eastern aspects have positive influence on carbon sequestration in soils of both dense and sparse forest as compared to northern and southern aspect. The mid altitude (200-400 m) favored the SOC sequestration significantly higher followed by lower altitude (0-200 m) and least SOC pool was found in higher altitude (>400 m). On an average the SOC pool in dense forest, irrespective of the aspect mid altitude recorded higher SOC pool (185.17 t/ha) followed by lower and higher altitude as 152.86 t/ha and 148.79 t/ha respectively. Similarly on spares forest mid altitude recorded higher average SOC pool (174.59 t/ha) followed by lower (172.08 t/ha) and higher altitude (154.84 t/ha). Based on the result it is concluded that western and eastern aspect with mid altitude favored the carbon sequestration in soils of both dense and spares forest of Ankola taluka in Uttara Kannada district.

Keywords

Aspect, Altitude, Forest, SOC Pool, Spatial Analysis.

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A. G. Koppad ¹, Pavan Tikhile ¹

Affiliations
1 Department of Agricultural Engineering, College of Agriculture Bijapur, Bijapur, Dharwad (Karnataka), IN

Abstract

The study was carried out in Kumta taluka of Uttara Kannada district during the year 2013 to assess the role of aspects for sequestering the carbon in soil by dense and sparse forest and total soil organic carbon (SOC) pool in different land use land cover classes. The result revealed that the total and average SOC pool was 8.003 million tonnes and 144.08 t/ha respectively. Among the different LULC classes, dense forest shown higher SOC pool (179.2 t/ha) followed by sparse forest, open land and agricultural land. The western aspect found to influence soil carbon sequestration in both dense forest (190.44 t/ha) and sparse forest (184.50 t/ha) followed by eastern, southern and northern aspects. The study indicated that dense forest found to sequester 2.24 times more soil carbon as compare to agriculture.

Keywords

Topography, LULC, SOC Pool, Satellite Image.

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