马尾松纯林虫生真菌群落组成及优势种生态位研究  

The component of entomogenous fungi community and the niche of dominant species in pure forest of Masson's pine

作　　者：陈名君[1] 刘玉军[1] 周娜[1] 樊美珍[1] 李增智[1] 黄勃[1] 

机构地区：[1]安徽农业大学微生物防治省重点实验室,合肥230036

出　　处：《菌物学报》2009年第4期521-527,共7页Mycosystema

基　　金：国家自然科学基金(No.30770008);新世纪优秀人才支持计划(No.05-0560);安徽省优秀青年科技基金(No.08040106902);安徽省级自然科学研究重点项目(No.TD200708);安农大引进与稳定人才科研启动项目(No.YJ2008-24)

摘　　要：对麻姑山马尾松纯林的虫生真菌群落进行了调查研究,共发现了3科6属14种。该林区虫生真菌群落的主要成分是环链棒束孢、球孢白僵菌和粉棒束孢,虫生菌种类较少,较为单一。对3种优势虫生真菌环链棒束孢、球孢白僵菌和粉棒束孢的营养、时间及营养-时间二维生态位进行了分析。结果表明,环链棒束孢与粉棒束孢的营养生态位重叠度最大,与球孢白僵菌时间生态重叠度最大。而球孢白僵菌的营养生态位宽度、时间生态位宽度和营养-时间二维生态位宽度都为最大。球孢白僵菌在自然界中发生时间长,分布范围广,寄主昆虫丰富,生存能力强的实际情况也支持这一分析结果。The structure of entomogenous fungus communities of the artificial forest ecosystem of pure Masson＇s pines in Magushan was investigated, and 3 families, 6 genera and 14 species were found. The main species of the community were Isaria cateinannulata, L farinosa and Beauveria bassiana. The nutritional-niche, temporal-niche and nutritional-temporal two-dimension niche of these 3 dominant species were analyzed. The result showed that the largest nutritional niche overlap occurred between L cateinannulata and L farinosa, and the largest time niche overlap occurred between L cateinannulata and B. bassiana. B. bassiana had the highest values in nutritional-niche breadth, temporal-niche breadth and two-dimensional niche width. The facts that B. bassiana has long occurring period, wide distribution, wide insect host ranges and strong survival ability in the forest support the results.

关 键 词：多度 生态位宽度 生态位重叠度 球孢白僵菌 

分 类 号：S718.8[农业科学—林学]