03372nas|a2200433 i 4500 20260817163456.0 951012s1993 th u m rtt 00| a1eng d .b10098434 AIT Thesis no.IR-92-08 Lampayan, Rubenito Melendres Assessing the scope of improving paddy fields with light soils using GIS Bangkok : Asian Institute of Technology, 1993 90 leaves + 1 online resource Thesis ; no. IR-92-08 A thesis submitted in partial fulfillment of requirements for the degree of Master of Engineering, School of Environment, Resources and Development Thesis (M.Eng.) - Asian Institute of Technology, 1993 This 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. Soil stabilization Geographic information systems Congresses Geographic information systems Murty, V.V.N., Chairperson Kono, Yasuyuki, Co-chairperson Onta, Pushpa Raj, Examination committee Apisit Eiumnoh, Examination Committee Bhuiyan, S.I., Examination committee Government of Japan, Scholarship donor Asian Institute of Technology. Thesis ; no. IR-92-08 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B16940 .b10098434 mnait u 240411 2 951012 m a u 0 mnait mnarc 22 40 Barcode : 30050120730709 CREATED : 2014-03-25 RECORD # : i12778242 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160072137 CREATED : 2016-04-28 RECORD # : i12961607 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 8886 8886 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no.IR-92-08 30050120730709 2026-08-17 16:34:56 3 2026-08-17 22 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no.IR-92-08 30050160072137 2026-08-17 16:34:56 1 2026-08-17 40