2. Measure the diameter and height of the tree, all the trees at an altitude of 1.3 meters except mangrove wood temple at the level of 20 cm. Record type and number of wood, young with less than 4 cm diameter and height, seedling with less 1 meters every tree
3.Sample parts of a tree trunk, branches, including the leaves and prop root Yan of mangrove tree varieties of each type 1 early
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