Reprint - Central Arid Zone Research Institute

that valuable researches could be conducted on the landforms andassociated natural resources in the developing countries withoutmaking the use of sophisticated and expensive image processingsystem.123 Sharma, K.D., Singh, S., Singh, N. and Bohra, D.N. (1989)Satellite remote sensing for detecting the temporal changes in thegrazing lands. Journal of Indian Society of Remote Sensing. 17: 55-59Traditional grazing lands in the Indian arid zone can be identifiedand mapped, reliably and reasonably within ± 10% accuracy,through LANDSAT TM false colour composites of bands 2, 3, 4.Comparative study of LANDSAT TM and the Survey of Indiatopographical maps revealed reduction in the aerial extent of thegrazing lands in the Jodhpur district up to 9 to 30% over a period of28 years, between 1958 and 1986, due to the human activity likecultivation and urbanisation resulting in the desertification of theadjoining agricultural lands.124 Singh, S. (1970)The application of aerial photo-interpretation in geographicalresearch. University Studies in Geography. 2: 46-60The aerial photo-interpretation plays an important role in theidentification and assessment of the natural and biological resourceslike landform, soil, geography, hydrology, land use, vegetation,forestry and wild life. The maps of various types which form thebasis of development planning can be prepared from the aerialphotographs. Their techniques are now widely applied in theplanning and development of the urban areas, natural regions anddemographic studies.125 Singh, S. (1977)Sand dunes and palaeoclimate in Jodhpur district, westernRajasthan. Man and Environment. 1: 7-15In the present article, the origin, distribution and morphology ofsand dunes of different types and their significance in palaeoclimatereconstruction in Jodhpur district, western Rajasthan, have beendescribed. The results of this study will provide the guidelines toenvironmentalists and planners to provide the definite solution tothe palaeoclimatic process of the district.126 Singh, S. (1978-88)Application of remote sensing technique in the environmentalproblems of the Great Indian desert. Indian Journal of Geography.13: 83-91