The purpose of this study is to investigate the structure of plant communities and carbon accumulation in มวลชีวภาพของ trees in dry evergreen forest botanical garden organization. The queen Sirikit Botanic Garden, Chiang Mai (the 1).990-993 meters above sea level, between October 2553 - September 2554 Botanic Garden and home protector, Phitsanulok province (plots. 2), at an altitude of 1121 meters above sea level, between October 2555 - September 2556 by permanent plots Size 100 x 100 square meters measure the height and lines. Around the circle of trees with DBH 14 cm in circumference than the results of the study showed that the tree species, 111 1 converter38 family, density 592 trees / ha, basal area, including 26.59 square meters, average height 12.19 meters, total biomass 555.97 ton / hectare, carbon sequestration carbon 273.72 tons / hectare. The plot 2 tree species 152 type 32 family, density 647 trees / ha, basal area, including 25.84 square meters, average height 10.37 meters, total biomass 369.57 ton / hectare, carbon sequestration carbon 181.88 tons / hectare. Which converts both plot has similarities 24 index study.33% the plants too 32 type. It can be seen that the carbon sequestration in the 1 was higher than the 2 although there were trees less. Due to the fact that most tree has a cross sectional area and height.
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