PHYSICAL AND ECONOMIC IMPACTS OF SEDIMENTATION ON FISHING ACTIVITIES: NAM PONG BASIN, NORTHEAST, THAILAND

Sam H. Johnson

No 279051, 1984 Annual Meeting, August 5-8, Ithaca, New York from American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association)

Abstract: Using aerial and LANDSAT data a dynamic land use model of the Nam Pong Basin has been developed. The model simulates erosion that results from conversion of watershed land to alternative uses. Erosion values are passed to a linked reservoir model where they are converted to turbidity levels. Operated together the two models simulate changes in quantity and quality of fish production resulting from increased turbidity levels. Simulation of alternative management scenarios predicts continued increases in sedimentation leading to drastic reductions in fishing income levels. Restrictions on number of fishing families and protection of critical watershed areas are necessary to protect the long-term sustainability of the reservoir fish production system.

Keywords: Environmental Economics and Policy; International Development; Land Economics/Use (search for similar items in EconPapers)
Pages: 23
Date: 1984-08
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Persistent link: https://EconPapers.repec.org/RePEc:ags:aaea84:279051

DOI: 10.22004/ag.econ.279051

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