Landscape analysis for pedo-geomorphological characterization in part of basaltic terrain,central India using remote sensing and GIS |
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| Authors: | M G Raghavendra Reddy G P Obi Reddy A K Maji K Nageshwara Rao |
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| Institution: | (1) National Bureau of Soil Survey & Land Use Planning, Amravati Road, Nagpur, 440010, India |
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| Abstract: | In the present study, an attempt has been made to analyse IRS-ID LISS-III satellite data in conjunction with field observations
for geomorphological mapping and pedo-geomorphological characterisation in Mohgaon area of Nagpur district, Maharashtra. Analysis
of satellite data reveals distint geomorphological units viz., plateau top, isolated mounds, linear ridges, escarpments, plateau
spurs, subdued plateau, rolling plains, pediments, narrow valleys and main valley floor. Soil profiles, studied on different
identified landforms, showed variation in site and morphological charactaristics. Moderate soil erosion occurs on plateau
top, isolated mouds, plateau spurs, rollinmg plains and pediments. Severe erosion was identified on escarpments and subdued
plateau and narrow valleys suffer very slight erosional hazards. Moderately well drained soils were found on rolling plains,
pediments, narrow valleys and main valley floor. Well drained soils were noticed on plateau top and plateau spurs. Very shallow
soils were found on the plateau top and isolated mounds. Shallow soils are found in linear ridges, escarpments, plateau spurs
and rolling plains. Moderately deep and deep soils are found on subdued plateau, pediments and main valley floor. The landform-soil
relatioinship reveals that the soils on the plateau top and isolated mounds are very shallow, well drained, clay textured.
The soils on the narrow valleys and main valley floor are deep, moderatly well drained, and clayey in texture. It also indicates
that landform-soil processes are governed by physiographic position, drainage, slope and erosion conditions of the area. The
present study reveals that the analysis of remotely sensed data in conjunction with field observations in GIS will be of immense
help in geomorphology mapping, analysis of landform-soil relationships and generation of their geo-spatial database. |
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