Lichens are organisms that can be used as an indicator of air quality, and is growing, according to the course of the season. Studied changes in benthic community of lichens on the ground. The Royal Observatory at 7th Cycle Birthday Anniversary Doi Inthanon. To serve as a baseline to monitor them. Lichen-covered plots of each species in each month. The survey frame size 50x50 cm² 3 plots and percent cover of lichens on the ground. From February 2557 until August 2557, and the environmental and chemical factors that may affect the growth of lichens. Save the 1-month time, the study found lichen 6 species and lichen group foliose can not specify the currency by lichen species Diabaeis sp. A percentage of the most capped at 37.1% and lichen species Heterodermia sp. 0.2 percent are covered at least 0.2% percent cover of lichens on the ground, most likely a slight increase except lichen Diabaeis sp. and Heterodermia leucomelos percent cover decreased significantly during the month. June This may be due to the plant's Bright Lights overshadowed by growing lichens. And lichen species is related to physical factors such as Cladonia sp., Which grows on the island surface. Was found to be correlated with soil moisture and humidity of the air.
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