| Author | Nguyen Khac Thanh |
| Call Number | AIT Thesis no.RS-07-8 |
| Subject(s) | Shrimp culture--Geographic information systems--Vietnam
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| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Remote Sensing and Geographic Information Systems |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis (M.Sc.) - Asian Institute of Technology, 2007 |
| Abstract | It has been difficult to manage development of brackish water shrimp farming in sustainable way. Due to the potentially high income from shrimp culture, rice farmers have converted their farms to shrimp farms but most of these rice farms are not suitable for shrimp culture only. In other areas, mangrove forests have been cleared to acquire areas for shrimp culture. The similar trend has been observed in study areas where the coastal aquaculture activities were migrating to rice field areas. In the context of GIS-based planning for sustainable shrimp farming, these are three main points that should be considered: suitable area, suitable area location for shrimp farming operations and carrying capacity of water bodies in the study area. If these three main points above are satisfied and associated with the government policies, farmers awareness and a stable market, then the sustainable development can be reached. In this study, the integration of GIS with MCE (Multi-Criteria Evaluation) including Analytic Hierarchy Process (AHP) and Weighted Linear Combination (WLC) were used for land evaluation of shrimp farming and shrimp farming operations location. The integration of GIS and RS was also used to detect the land-use changes and assess the trend in land-use of study area. Ammonia-N was used as criteria for calculating the carrying capacity of water bodies for shrimp farming with the assumption that NH3 in the study area was only produced from shrimp farming activities. The study's results showed that 2.01 % (711.78 ha) and 21.76% (7686.84 ha) of study area are highly suitable and suitable respectively for rice-shrimp farming. About eight percent (7.77 %, 2730.70 ha) and 30.67% (10780.76 ha) of study area were also found as highly suitable and suitable for shrimp only farming. In the context of land-use changes in shrimp farming area, there has been only one changing trend from agriculture land, paddy fields to shrimp farms (shrimp only farms and rice-shrimp farms). Hamluong and Cochien rivers system have provided the good existing conditions on carrying capacity to develop shrimp farming activities in Thanhphu district. These rivers can support the intensive shrimp farming areas equivalent to 3 times the total areas of Thanhphu district, but based on land suitability study, only 21.17% (77 12.67 ha), 23.9% (8707.23 ha), and 14.3% (5201.55 ha) of its area are good for improved-extensive, semi-intensive and intensive respectively. |
| Year | 2007 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Remote Sensing (RS) |
| Chairperson(s) | Tripathi, Nitin K.; |
| Examination Committee(s) | Gallardo, Wenresti G.;Honda, Kiyoshi;Ho Dinh Duan; |
| Scholarship Donor(s) | AIT Fellowship; |