Because of the country's northern areas on Thailand Experiencing air pollution from smog. Chiang Mai Province, especially the area that resembles a basin pan. Surrounded by high mountains, which in many districts of Chiang Mai Province, has had such problems. Mae chaem district is one of the number of district heat, high point (hotspot) in Chiang Mai, with mainly due to burn in the open air, to remove debris after harvest include corn cob stump debris affect organisms. This study aims to compare the diversity of lichen in some areas of the district that contains the hotspot is in crisis and the low level and selected Lichen as an indicator to the environment in the area by collecting Lichen on the bark (epiphytic lichens). In some villages of the district heat point (hotspot), high and low. Explore the diversity of Lichen on tree species common in all areas of study. Find the index of a wide variety of Lichen (ILD) by applying methods of Asta et al (2002). the survey framework (grid frame) type size channel 10 cm2 20x50, divided into 10x10 individual channels, size cm grafted on the high ground from the mango tree trunk 1 m by selecting wangboriwen that has most Lichen. Save the frequency and number of lichen, along with physical storage, such as temperature, humidity, light intensity. The direction of lichen and pH of bark. In addition, analyses of air samples in the area using lichen sample collection methods .... Find the relationship between Lichen diversity and quantity of information and atmosphere ... in that study were compared with monitoring volatile organic substances .... continue on.
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