Assessing the scope of improving paddy fields with light soils using GIS | |
| Author | Lampayan, Rubenito Melendres |
| Call Number | AIT Thesis no.IR-92-08 |
| Subject(s) | Soil stabilization Geographic information systems--Congresses Geographic information systems |
| Note | A thesis submitted in partial fulfillment of requirements for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. IR-92-08 |
| Abstract | 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. |
| Year | 1993 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. IR-92-08 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Irrigation Engineering and Management (IR) |
| Chairperson(s) | Murty, V.V.N.;Kono, Yasuyuki; |
| Examination Committee(s) | Onta, Pushpa Raj;Apisit Eiumnoh;Bhuiyan, S.I.; |
| Scholarship Donor(s) | Government of Japan; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1993 |