Comparison study using aerial photographs and satellite imagery for determining shrimp farm extent and distribution in Nakhon Pathom province
1998
Wara Taparhudee | Phutchapol Suvanachai (Kasetsart Univ., Bangkok (Thailand). Faculty of Fisheries. Dept. of Aquaculture)
Aquaculture activities without an appropriate planning and monitoring can result in environment degradation and social conflicts. However, such activities concerning the sustainable use of limited resources can enable the farmers to support their livings. Therefore, maps presenting the extent and distribution aquaculture areas are urgently required for an effective management of aquaculture activities and nearby agricultural activities such as paddy field. This study was carried out for the purpose of mapping aquaculture areas and of making comparison between aerial photographs and satellite imagery for the appropriateness in such a mapping. The results have shown that there are several aquaculture activities such as fishes (e.g. tilapia), and prawns (e.g. Giant freshwater prawn and King tiger prawn) in the study area. The aerial photographs and satellite imagery have obviously shown the spatial pattern of aquaculture areas. In addition, the image analysis techniques that are image masking can measure such an area. The types of aquaculture activities, however, can not be classified for remotely sensed data. This is because the farming techniques for each activities are various and uncertain. Furthermore, satellite imagery is an appropriate tool for mapping and monitoring aquaculture areas. The findings from this study have indicated that satellite remote sensing provides an effective mapping and monitoring tool which enables a resource management to be more effective.
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