The study area, PLWS is located in the Phu Luang District
in the southern part of the Loei Province, NE of Thailand
(Figure 1). Its coverage area is approximately 897 square
kilometers (89,697 ha). It lies between latitude 17 degrees
3 minutes and 17 degrees 24 minutes North and longitude 101
degrees 16 minutes to 101 degrees 21 minutes East. It is
a mountainous area with an escarpment in the East. The height
of its summit is about 1,600 m.msl. It is characterized by a number of hills with a thick sequence of Mesozoicrock of Phu Kradung, Soa Khua, Pha
Dua, Phu Phan and Phra Wihan Formations. The areas support two main forest types: evergreen and deciduous
forests. The mean annual rainfall of the area varies from 1,200 – 1,400 mm, with over 60% of the annual rainfall
falling in August and September (Mongkolsawat, C. et al., 2005).
The study area, PLWS is located in the Phu Luang District
in the southern part of the Loei Province, NE of Thailand
(Figure 1). Its coverage area is approximately 897 square
kilometers (89,697 ha). It lies between latitude 17 degrees
3 minutes and 17 degrees 24 minutes North and longitude 101
degrees 16 minutes to 101 degrees 21 minutes East. It is
a mountainous area with an escarpment in the East. The height
of its summit is about 1,600 m.msl. It is characterized by a number of hills with a thick sequence of Mesozoicrock of Phu Kradung, Soa Khua, Pha
Dua, Phu Phan and Phra Wihan Formations. The areas support two main forest types: evergreen and deciduous
forests. The mean annual rainfall of the area varies from 1,200 – 1,400 mm, with over 60% of the annual rainfall
falling in August and September (Mongkolsawat, C. et al., 2005).
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