Abstract
To guarantee food security and job creation of small scale farmers to
commercial farmers, unproductive farms in the South 24 PGS, West Bengal need land
reform program to be restructured and evaluated for agricultural productivity. This study
established a potential role of remote sensing and GIS for
identification and mapping of salinity zone and spatial planning of agricultural land over the Basanti and Gosaba Islands(808.314sq. km) of South 24 PGS. District of West Bengal. The primary data i.e. soil pH, Electrical Conductivity (EC) and Sodium Absorption ratio (SAR) were obtained from soil samples of various GCP (Ground Control Points) locations collected at 50 mts.
intervals by handheld GPS from 0–100 cm depths. The secondary information is acquired
from the remotely sensed satellite data (LANDSAT ETM+) in different time scale and digital elevation model. The collected field samples were tested in the laboratory and were
validated with Remote Sensing based digital indices analysisover the temporal satellite
data to assess the potential changes due to over salinization.Soil physical properties such
as texture, structure, depth and drainage condition is stored as attributes in a geographical
soil database and linked with the soil map units. The thematic maps are integrated with
climatic and terrain conditions of the area to produce land capability maps for paddy.
Finally, The weighted overlay analysis was performed to assign theweights according to
the importance of parameters taken into account for salineareaidentification and mapping
to segregate higher, moderate, lower salinity zonesover the study area.
Go to article