WATER QUALITY ANALYSIS FOR RECREATIONAL WATERFALLS OF PHU RUEA NATIONAL PARK, LOEI PROVINCE
Phu Rua National Park is a tourist into use for activities is extremely allowing an increase of tourists to exceed the capacity of the area, which may cause problems in the management of natural resources of the park. The purpose of this research was to study the recreational carrying capacity in terms of waterfalls quality of Phu Ruea National Park water from the four waterfalls namely Huai Phai Waterfall, Hin Sam Chan Waterfall, Huai Toei Waterfall and Lead Phob Waterfall were collected by using grab sampling for the low visitor number period, medium visitor number period and high visitor number period. Water quality analysis parameters were Dissolved Oxygen (DO), Total Kjeldahl Nitrogen (TKN), Biochemical Oxygen Demand (BOD), Suspended Solids (SS), Temperature, pH, Turbidity and Total Coliform Bacteria. The result recreational carrying capacity in terms of waterfalls quality of Phu Ruea National Park found that the low visitor number period, medium visitor number period and high visitor number period of four waterfalls had high impact and exceeding recreational carrying capacity level for waterfall quality.
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