To decrease the human influence on natural resources and to recognize a suitable land use, it is vital to carry out scientific land assessments. In the present study, an attempt has been made to delineate the suitable land area for rice cultivation in the Hinglo river basin. The laboratory test data and field work observations have been combined in a geographical information system (GIS) environment. The Different environmental parameters, viz. climatic factors (temperature and precipitation), topographic factors (slope and relief), hydro-geomorphological factors (distance from river, depth of the groundwater and geology), physical properties of soil (soil texture and soil depth) and chemical properties of soil (pH, boron, copper, nitrogen, iron, manganese, phosphorous, potassium, sulphur, zinc etc.) have been used. Each thematic layer has been assigned the rating by analytical hierarchical process method. With the help of weighted overlay method, all thematic layers have been converted into a single layer to prepare the suitability map for rice cultivation in GIS environment. The entire basin has been classified into four suitable classes namely ‘highly suitable’; ‘moderate suitable’, ‘marginally suitable’, and ‘not suitable’ land area. Only 10.88% of the total area is most suitable for rice cultivation. The western and north-middle portion of this watershed region is not suitable for rive cultivation because of the extreme climatic condition, rugged topographic, and lack of proper soil micronutrients. The lower portion of this watershed is most suitable for the rice cultivation due to presence of newer alluvium soil, lower sloping area and abundance of soil micronutrient.
Modeling Earth Systems and Environment – Springer Journals
Published: Apr 19, 2018
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