林业科技开发2012，Vol.26Issue(1)：30-33,4.DOI:10.3969/j.issn.1000-8101.2012.01.008
德兴常绿阔叶林乔木层优势种群的生态位
The ecological niche of dominant tree species in the evergreen broad-leave forest of Dexing citv
摘要
Abstract
Based on the plot investigation of evergreen broad-leave forests in Dexing city, the niche breadths and overlaps of thirty dominant species were measured by using a quantitative analysis method. The results showed that the largerest niche breadths were Schima superba, Lithocarpus glabra, Castanopsis eyrei and Castanopsis fargesii. However, Camellia oleifera and Photinia serrulata could only use very limited resources in the ambience of evergreen broad-leaved forests and developed to specialized species because of poor adaptability. Their niche breadths were 0. Species that niche breadths were larger had greater niche overlaps among them,such as Schima superba, Lithocarpus glabra and Castanopsis eyrei, etc. Their niche overlap values were all above 0. 55. Niche overlap values of 255 species were less than 0. 2, accounted for 58. 6% of the total. But the species with more than 0. 5 niche overlap values only took up 7. 4% of the total. It was a long-term competition and adaptation among the species with small niche overlaps and weak competition, because they consumed the same resources.关键词
常绿阔叶林/生态位宽度/生态位重叠Key words
evergreen broad-leave forest/niche breadth/niche overlap引用本文复制引用
岳军伟,龙蔚,杨桦,刘光正,林小凡..德兴常绿阔叶林乔木层优势种群的生态位[J].林业科技开发,2012,26(1):30-33,4.基金项目
江西省财政林业重大专项"江西常绿阔叶林恢复重建技术"(编号:200651010302). （编号:200651010302）
