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From the leaf anatomic stucture, the ability of controlling water transpiration in conifer trees species withdeveloping cutin layer and deep stomia was stronger than in broadleaf. 從葉片解剖搆造的主要特點看,針葉樹種的角質層發達,氣孔下陷,控制水分散失的能力強於濶葉樹種。