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Tamil Nadu Agricultural University (2013)

Novel approaches of land evaluation using geospatial technologies for planning sustainable development of desert areas

ADEL ABD El-HAMID ELWAN KHALIL

Titre : Novel approaches of land evaluation using geospatial technologies for planning sustainable development of desert areas

Auteur : ADEL ABD El-HAMID ELWAN KHALIL

Université de soutenance : Tamil Nadu Agricultural University

Grade : Doctor of Philosophy (PhD) in Soil Science and Agricultural Chemistry 2013

Résumé partiel
The study was carried out in the desert lands of Sathankulam area of Thoothukudi district, Tamil Nadu, India with an objective of characterizing and evaluating soil, land and water for agricultural use as well as devising novel approaches for overcoming the deficiencies in the old evaluation systems when used for evaluating the desert environment. The study area was placed under desertic conditions and lies between 77° 50’ and 77° 60’ East longitudes and 8° 19’ and 8° 27’ North latitudes occupying an area of 10,913ha. The FCC (Landsat ETM+), DEM, and unsupervised classification were interpreted and used for extracting the actual study area and its landforms for preparation of prefield map and thematic maps. Three landform units were identified and eleven geo referenced pedons were selected for soil survey and field studies. Soil samples from representative pedons of each soil units were analyzed for characterization, classification and evaluation of soils. 9The soils of study area were characterized and classified into two orders viz., Entisols and Inceptisols based on the presence or absence of the diagnostic horizons. Entisols order occupied 9697.5 ha (88.86%) and Inceptisols order occupied 1215.5 ha (11.14% of total area. Four families were identified in the study area according to the particle-size classes, mineralogy, and soil temperature regimes. The land use land cover categories were depicted spatially using GIS through classification of digital satellite imagery. The major land use types in the study area were agricultural lands, water bodies, urban, and barren desert land. According to the kind of product and the management, seven land use types were distinguished in the study area. The most important water resource for agricultural purposes in the study area was the ground water. The quality was good but the availability was limited.

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Page publiée le 18 avril 2021