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研究了天然阔叶林、天然阔叶次生林和马尾松人工纯林3种不同森林生态系统中昆虫病原真菌优势种的数量组成及生态位宽度和生态位重叠值.结果表明:球孢白僵菌在这3种森林生态系统中分别为第三、第一和第二优势种.该菌在3种森林生态系统中的营养生态位宽度和时间生态位宽度均最大,远大于环链棒束孢、粉棒束孢和细脚棒束孢等优势种;该菌与其他优势种的时间生态位重叠值较大,而营养生态位重叠值较小.球孢白僵菌在3种森林生态系统中都是发生时间最长、寄主昆虫最丰富、适应环境能力最强的昆虫病原真菌.
The species composition, niche breadth and niche breadth of dominant species of entomopathogenic fungi in natural forests of broad-leaved forests, natural broad-leaved secondary forests and Pinus massoniana plantations were studied.The results showed that Beauveria bassiana Among the three kinds of forest ecosystems, they are the third, the first and the second dominant species, respectively.The nutrition niche breadth and time niche breadth of the fungus in the three kinds of forest ecosystems are the largest, , Corynebacterium piniperda and Cultrina viridis. The time niche overlap value between the dominant species and other dominant species was larger, while the niche overlap value was smaller. Beauveria bassiana in three forest ecosystems Are the longest occurrence of insects, the most abundant host insects, the strongest ability to adapt to the environment of insect pathogenic fungi.