Land use changes in Pak Phanang basin using satellite images and geographic information system
2004
Yongchalermchai, C. | Yongsatisak, S. | Khampeera, A. | Tannayopas, D. (Prince of Songkla Uni. Songkhla (Thailand). Faculty of Natural Resources. Dept. of Earth Science)
This study defined major changes in land use in Pak Phanang Basin, Nakhon Si Thammarat Province by using remote sensing and geographic information system techniques. The land use map conducted by Department of Land Development in 1988 was compared with the land use map interpreted from satellite images of Landsat-5 TM acquired in 1995 and 1999. The results revealed that between 1988 to 1999, forest area in the basin decreased by a total of 98.08 square km, a drastic decline of 60 percent that was changed to rubber plantation area. The rubber area increased about 181.7 square km or 41 percent. Shrimp farm area increased by 184.87 square km, equivalent to a high increase of 886 percent while paddy field area decreased by 248.7 square km, or 16 percent that was converted to shrimp farm and rubber land. A decline in forest area caused soil erosion. The severe expansion of shrimp farm area caused the salinity and affected nearby paddy field and water source areas, that resulted in degradation of the environment. Application of remote sensing and geographic information system was utilized as a tool for monitoring the land use change and planning proper resource utilization for sustainable development in Pak Phanang Basin.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by Kasetsart University