Remote sensing for resources development and environmental management: Remote sensing for resources development and environmental management

Damen, M. C. J.

Bibliographic data

Multivolume work

Persistent identifier:: 856342815

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A. A. Balkema

Identifier (digital):: 856342815

Language:: English

Additional Notes:: Volume 1-3 erschienen von 1986-1988

Editor:: Damen, M. C. J.

Document type:: Multivolume work

Volume

Persistent identifier:: 856343064

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Scope:: XV, 547 Seiten

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A. A. Balkema

Identifier (digital):: 856343064

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(26,7,1)

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Damen, M. C. J.

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: 4 Renewable resources in rural areas: Vegetation, forestry, agriculture, soil survey, land and water use. Chairman: J. Besenicar, Liaisons: M. Molenaar, Th. A. de Boer

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: Remote sensing in evaluating land use, land cover and land capability of a part of Cuddapan District, Andhra Preadesh, India. S. V. B. Krishna Bhagavan & K. L. V. Ramana Rao

Document type:: Multivolume work

Structure type:: Chapter

479 Ramana Rao (1984,1985). No attempt has so far been made to map land use through remote sensing techniques in this area. GEOMORPHOLOGY The geomorphic map (Fig.2) shows the distri bution and extent of landforms and the geo morphic units. The different landforms and land units identified and mapped in the area are denudational hills, hogback ridges, escarpments, river built plain, valley fills, river terraces, abandoned channels, piedmont zone, residual hills, 'V'shaped valleys and pediments. The hogback ridges are sharp-crested rid ges, often serrated and the dips of the strata are high (45° to 70°). The front slope of the hogback is steeper than the back slope. These ridges are made up of an intercalated sequence of hard and soft rocks namely quartzites or slates and schists or phyllites respectively. Soft rocks like shale and phyllites were denuded and formed as valleys. Later these valleys were filled up with unconsolidated colluvio-fluvial material. The footslopes of hogback ridges have a number of piedmont fans. The eastern part of the Q study area has a number of large fans with 3 slope and in the central and western parts of the area are a number of small fans with 3° to 5° slope. This varia tion is probably due to the variation in the rainfall distribution within the area. The rainfall decreases from east to west. The river built plain is found along the Cheyyeru, Pulang Eru and Patagunjana rivers. River built plain is a depositional plain with 0° to 0°45' slope formed as a result of verti cal accretion and planation of the river deposits. SOILS Soils in the study area are broadly classi fied into four types. Black cotton soil (light - moderately deep to deep) occurs in the narrow valley-fill area along Patagun jana river. It is dark brown to gray in colour, moderately deep to deep. Clay content varies from 30 to 50 percent. The pH value ranges from 7.0 - 8.5 and almost normal in salt content up to 120 to 150 cm (Unpublished technical report, 1971). Red loamy soil is derived mostly from shales, slates, phyllites, schists and quartzites. It occurs in a broad valley fill area around Rajampet under slight to moderate erosion. The top soil is pale brown to light reddish brown with uniformly reddish brown to dark reddish coloured sub-soil. The surface soil is loamy and the sub-soil layers are denser tending to become clayey, with increase in depth. The sub-soil has blocky to prismatic structure. It is usually neutral in soil reaction tending to become weakly alkaline in unfavourable locations and are normal in soluble salt content. Red earth is mostly developed from granites and gneisses. It occurs only in the northeastern part of the study area. It has a rapid to excessive surface drainage conducive to erosion. The main problem is to improve moisture holding capacity. Alluvium is exposed along all the major streams. LAND USE AND LAND COVER Land use refers to "man's activities on land which are directly related to land" (Clawson and Stewart, 1965 in Anderson et al, 1976). Land cover refers to "the vegetational and artificial constructions covering the land surface" (Burley, 1961 in Anderson et al, 1976). The planning and development of land requires an intimate knowledge of land, its physical characte ristics, present biological productivity, capacity and limitations. Among all the types of uses that the land is being put to, the land utilised for agriculture activities by man commands utmost importance. The land use and land cover map (Fig.3) is mainly based on Anderson's (1971) land use classification. The land use and land cover is classified into twelve types, viz., wet crop land, dry crop land, land under horti culture, grass land and shrub land, southern tropical dry deciduous forest with red sanders, southern tropical dry thorn forest, roadways, railways, built up area, barren land, broken ground - dissection and erosion, and water bodies. The classification is based on their location, type of vegetation and human activity and general geomorphic configuration. The following is a brief description of the prominent units. Wet crop land Irrigation is mainly carried out using the water from the surface tanks and wells. The important crops are paddy, sugar cane and banana. These fields occupy the low lying plains of red loamy soil and black cotton soil. In some places these crops are raised only during the rainy season when the surface tanks are full. During the dry sea son the same areas are used for dry crops like jowar, bajra, groundnut, which do not require irrigation. Dry crop land The main crops under rainfed cultivation are jowar, bajra, korra, ragi, pulses, horse- gram, and turmeric. Mostly these crops can be seen occupying the upstream areas of tanks in the valley fill zone and river built plain on red loamy, black cotton and alluvial soils. Land under horticulture Lemon, orange, and mango plantations predo minate in this category and occupy small portions of valley-fill and fluvial plain areas. Betel leaves are grown on the point bars. Grass land and shrub land This unit is confined to certain places on ridges and piedmont zones. The surface is rocky with little or no soil cover. This land has been utilised only for fuel, and livestock grazing. Southern tropical dry deciduous forests with red sanders This type of forest is confined to the

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