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035 _a.b11417468
099 9 _aAIT Thesis no. NR-94-05
100 1 _aLing, Jessica Lee Wan
245 1 0 _aImpact of coastal development on the natural coastal ecosystems of Northwest Langkawi (1985-1994)
260 _aBangkok :
_bAsian Institute of Technology,
_c1994
300 _a119, [12] leaves
490 1 _aThesis ;
_vno. NR-94-05
500 _aA thesis submitted in partial fulfilment of the requirement for the degree of Master of Science, School of Environment, Resources & Development
502 _aThesis (M.Sc.) - Asian Institute of Technology, 1994
520 _aThe aim of this project is to ascertain the development impact of human activities on the natural coastal ecosystems of Northwest Langkawi, Malaysia during the period of 1985 to 1994. Studies have been carried out on the water-shed area of Northwest Langkawi, 4,857 hectares. Change detection of the terrestrial, intertidal and marine areas have been carried out. Remote sensing and Geographic Information System (GIS) are used as a tool to detect the terrestrial changes. LANDSAT Thematic Mapper (February 1989 and January 1992) and aerial photographs (1989 and 1994) are utilized in this study. Results obtained showed that much of the landuse/cover of the study area had undergone changes. These changes were seen highest for the primary forest where approximately 11 .5% of the total area had been cut to make way for development. The mangrove forest acreage was also declining. Increase in acreage were observed for built-up areas, grasslands, baresoil, and belukar (secondary regrowth) due to the on-going development within the study area. However, a decrease was observed for the cultivated land. The annual sediment load estimated for the study area was considered low, 13,542 tons per year. A decrease in live coral coverage was observed between 1989 and 1994 resulting in an increase in coral debris. The marine water quality of the study area showed no changes except for the increase in sedimentation rates near the river mouths and the reef flat. No chemical pollution was observed throughout the study period. Chemical leachings observed in 1989 data showed minimal short term impact on the marine environment.
650 1 0 _aCoastal ecology
_xMalaysia
_xLangkawi Island (Kedah)
700 0 _aKaew Nualchawee,
_eChairperson
700 0 _aSuphat Vongvisessomjai,
_eExamination Committee
700 1 _aDelsol, Jean Pierre,
_eExamination Committee
710 2 _aH.M. Thailand King's Scholarship,
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. NR-94-05
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B16989
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