Environmental impact analysis of shrimp farming using remote sensing and geographic information system | |
| Author | Patil, Abhijit Ajit |
| Call Number | AIT Thesis no.EV-00-12 |
| Subject(s) | Shrimp culture--Environmental aspects Geographic information systems |
| Note | A thesis submitted as a partial fulfillment of the requirements for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | A methodology was developed for assessing the environmental impact of shrimp farming on coastal area of Ranong, Thailand. Since shrimp farm waste discharges affect the large water bodies and also cover large area, Remote Sensing and Geographic fufo1mation System techniques were adopted for evaluating the impacts. Satisfactory results were obtained for understanding the impact and mapping of the pollution of large water bodies. fu the present case study, two satellite image data with seven-year (1993-2000) time gap were compared and the changes in the water quality and land use were investigated. It was found that, the marine environment in the vicinity Ranong was getting affected by the uncontrolled and untreated wastewater discharges. The main pollutants like Chlorophyll-a and Total Suspended Solids (TSS) were found up to 24 μg/L and 35mg/L respectively. Wide fluctuations were found in Phosphate-Phosphorous (P04-P) concentration (0.3-24 μg/L), while other parameters Total Dissolved Solids (TDS), Ammonia-Nitrogen (NH4-N) were present in range of 35-70 g/L and 0.5 - 2.1 μg/L respectively. The influence of water quality on its optical property was used to develop empirical relations. Pollutant concentration maps were then developed using the empirical relations. The comparison between concentration maps of year 1993 and year 2000 revealed that the pollutants in the water were not only dispersed in large area but also had increased in terms of concentration. Using change detection techniques, the impact of shrimp farming on land and mangrove was assessed. Abandon land due to shrimp farms had increased substantially up to 1.8 sq.km. in year 2000. |
| Year | 2000 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering and Management (EV) |
| Chairperson(s) | Annachhatre, Ajit P.;Tripathi, Nitin Kumar; |
| Examination Committee(s) | Chongrak Polprasert;Nguyen Thi Kim Oanh;Nielsen, Per; |
| Scholarship Donor(s) | Asian Institute of Technology (Partial Scholarship) |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2000 |