| Summary: | 碩士 === 國立東華大學 === 自然資源管理研究所 === 91 === We investigate the communitis of Podocarpus macrophyllus var. maki at Huei Yuan Area. Podocarpus macrophyllus var. maki is established in the subtropical evergreen needle-broad leaved forest and the communities have to called comm. Podocarpus macrophyllus var. maki, Cyclobalanopsis globosa ,Distylium gracile of illustration of vegetation. The population structure of Podocarpus macrophyllus var. maki is inverse J－shaped, which means that not only the seedlings and saplings are in the majority, but also the old ones alive. It shows the seedlings continuously supplement and regeneration. Our results show the Podocarpus macrophyllus var. maki will not die immediately. The age structures are nearly to all age calss and the tree ring records a phenomenon of suppression from releases, so the Podocarpus macrophyllus var. maki is shade-tolerant species. The seedling establishment is great in closed-canopy areas. The type Ⅲ Survivorship curve means that young age class has highier mortality rate then others, which may cause from competition. The expectation of life value of static life table shows after young age through high mortality rate, the others are able to stably grow. The spatial distribution patten of seedling and sapling classes showes clumped type. The reasons are that seeds of Podocarpus macrophyllus var. maki are larger and dispersed by gravity around female trees. The middle and big tree classes exhibites random types that reflects the spatial distribution pattern of the population changed with the time during its development.
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