000 03372nas|a2200433 i 4500
005 20260817163456.0
008 951012s1993 th u m rtt 00| a1eng d
035 _a.b10098434
099 9 _aAIT Thesis no.IR-92-08
100 1 _aLampayan, Rubenito Melendres
245 1 0 _aAssessing the scope of improving paddy fields with light soils using GIS
260 _aBangkok :
_bAsian Institute of Technology,
_c1993
300 _a90 leaves +
_e1 online resource
490 1 _aThesis ;
_vno. IR-92-08
500 _aA thesis submitted in partial fulfillment of requirements for the degree of Master of Engineering, School of Environment, Resources and Development
502 _aThesis (M.Eng.) - Asian Institute of Technology, 1993
520 _aThis study attempts to develop a methodology that would assist in identifying potential areas for soil compaction to improve the water transmission and retention capacity of the soil in rainfed paddy areas. In order to identify the areas for improvement, field data in terms of soil properties, land use, groundwater table depths, topography and rainfall distribution were . collected. Using an available GIS package (ARC/INFO), a GIS for the area was developed. Thematic maps for land use, soils, topography, groundwater table and rainfall distribution were digitized and overlaid. Field studies were carried out in a selected identified potential area to investigate the constraints that influence the adoption of soil compaction. These included the assessment of the paddy field layout, existing drainage facilities, presence of trees, and verification of soil properties and hydrological information. Survey of farmers view was conducted and it was found out that about 50 percent of the farmers are willing to try soil compaction technique provided that the compaction cost will not be directly shouldered by them. Using the available information for cost and benefits, economic analysis was conducted. Benefit-cost (BC) estimate of the proposed soil compaction project revealed a favorable BC ratio of 2.1: 1. Results show that identification of land improvement opportunity can be realized using overlay operations of GIS with available data and information.
650 0 _aSoil stabilization
650 0 _aGeographic information systems
_xCongresses
650 0 _aGeographic information systems
700 1 _aMurty, V.V.N.,
_eChairperson
700 1 _aKono, Yasuyuki,
_eCo-chairperson
700 1 _aOnta, Pushpa Raj,
_eExamination committee
700 0 _aApisit Eiumnoh,
_eExamination Committee
700 1 _aBhuiyan, S.I.,
_eExamination committee
710 2 _aGovernment of Japan,
_eScholarship donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. IR-92-08
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B16940
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