万木林中亚热带常绿阔叶林林隙主要树种的高度生态位

对万木林自然保护区中亚热带常绿阔叶林林隙内外主要树种的生态位宽度和生态位重叠进行了研究。结果表明：桂北木姜子和浙江桂在林隙内外部都占有较高的生态位宽度；生物学特性和生态学特性接近的树种高度生态位重叠较大，反之则较小；在林隙内，出矾和薄叶山矾的高度生态位重叠最大，而桂北木姜子和黄瑞木、尖叶水丝梨，浙江桂和尖叶水丝梨的高度生态位重叠较小；在非林隙内，山矾和黄瑞木的高度生态位重叠最大，桂北木姜子和尖叶水丝梨、黄瑞木的高度生态位重叠较小，表3参13

HEIGHT NICHE OF MAIN TREE SPECIES OF GAPS IN MID-SUBTROPICAL EVERGREEN BROAD-LEAVED FOREST IN WANMULIN OF FUJIAN

The height niche breadth and the height niche overlap of main tree species in gaps and non-gaps in the mid-subtropical evergreen broad-leaved forest in Wanmulin Nature Reserve were studied. The results showed that the height niche breadth of Litsea subcoriacea and Cinnamomum chekiangense in gaps and in non-gaps were the biggest. The height niche overlaps were greater between those species that had similar biological and ecological characteristics, and vice versa. In gaps, the height niche overlap between Symplocos sumuntia and Symplocos anomala was the biggest, and comparatively was small between Litsea subcoriacea and Adinandra mellettii, Litsea subcoriacea and Distyliopsis dunnii, Cinnamomum chekiangense and Distyliopsis dunnii; while in non-gaps, the height niche overlap between Symplocos sumuntia and Adinandra mellettii was the biggest, and comparatively was small between Litsea subcoriacea and Distyliopsis dunnii, Litsea subcoriacea and Adinandra mellettii. Tab 3, Ref 13