Amount of Leaf Consumed by Leaf-eating Insect in the Tropical Mountain Rain Forest, Jianfengling, Hainan Province

Fifty tree species belonging to twenty seven families were used to test the leaf-quantity eaten by leaf-eating insects in the tropical mountain rain forest, Jianfengling, Hainan.The result showed that the range of eating percentage either in leaf-area or weight was 0.45%~28.01% among various tree species, averaging 7.71% which had no significant influence on the tree growth.Nevertheless the existence of leaf-eating insects plays a positive role to the tropical forest ecosystem in keeping dynamic balance of the biological communities.