Land use options using simulation and systems analysis : a case study of the Laoag river basin, Ilocos Norte, Philippines | |
| Author | Ines, Amor Valeriano M. |
| Call Number | AIT Thesis no.WM-97-26 |
| Subject(s) | Land use--Simulation methods Land use--Philippines--Ilocos Norte |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering. School of Civil Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | Simulation and systems analysis was applied to analyze the land potentialities of the Laoag River Basin in llocos Norte, Philippines. The approach is within the concept of qualitative and quantitative land evaluation. Tools such as, Geographic Information Systems (GIS) and crop growth simulation models were used in the course of the study. GIS tackled the qualitative evaluation and the crop models for the quantitative part. The results are sets of land suitability classifications for the five crops considered for study (rice, corn, peanut, onion and garlic), as well as their yield perfonnances under water-limited and ideal condition. It was found out that these crops could be grown in the area. However, most promising crop(s) and cropping patterns should be detennined. This portion was done using the gross benefit as an index. The results further showed the relevance of irrigation during the dry and wet seasons. Irrigation is much more desired during the non-rainy periods of the year, whereas, during monsoon period, it is less required. This is based from the crop requirement's point of view. The concepts of Incremental Productivity (IP), Incremental Water Requirements (IWR) and Specific Incremental Productivity (SIP) are introduced. IP is the marginal level of productivity that can be achieved with irrigation, the basis is the rainfed production. IWR is the quantity of water required to achieve this marginal production. While, SIP is the marginal productivity achieved per unit volume of water supplied. These indexes can be useful tools for irrigation system management and planning. As such, in depth undestanding regarding their characteristics is recommended. Furthermore, the outputs of the study can be inputs for proper land use planning. In the later part of the study, optimization of land use is recommended. The use of optimization techniques is valuable on this part of the problem. Optimum allocation of available resources such as land and water can be pursued through this method. |
| Year | 1998 |
| Type | Thesis |
| School | School of Civil Engineering |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Water Engineering and Management (WM) |
| Chairperson(s) | Loof, Rainer; |
| Examination Committee(s) | Kubo, Naritaka;Abernethy, Charles L. ;Kazama, So;Tinsley, Richard L.; |
| Scholarship Donor(s) | DAAD;Asian Institute of Technology; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1998 |