菌物學(xué)報(bào) 15 July 2009, 28(4):521～527
馬尾松純林蟲(chóng)生真菌群落組成及優(yōu)勢(shì)種生態(tài)位研究
陳名君 劉玉軍 周娜 樊美珍 李增智 黃勃*
安徽農(nóng)業(yè)大學(xué)微生物防治省重點(diǎn)實(shí)驗(yàn)室 合肥 230036
摘 要：對(duì)麻姑山馬尾松純林的蟲(chóng)生真菌群落進(jìn)行了調(diào)查研究，共發(fā)現(xiàn)了3科6屬14種,。該林區(qū)蟲(chóng)生真菌群落的主要成分是環(huán)鏈棒束孢、球孢白僵菌和粉棒束孢,，蟲(chóng)生菌種類(lèi)較少,，較為單一,。對(duì)3種優(yōu)勢(shì)蟲(chóng)生真菌環(huán)鏈棒束孢、球孢白僵菌和粉棒束孢的營(yíng)養(yǎng),、時(shí)間及營(yíng)養(yǎng)-時(shí)間二維生態(tài)位進(jìn)行了分析,。結(jié)果表明，環(huán)鏈棒束孢與粉棒束孢的營(yíng)養(yǎng)生態(tài)位重疊度最大,，與球孢白僵菌時(shí)間生態(tài)重疊度最大,。而球孢白僵菌的營(yíng)養(yǎng)生態(tài)位寬度、時(shí)間生態(tài)位寬度和營(yíng)養(yǎng)-時(shí)間二維生態(tài)位寬度都為最大,。球孢白僵菌在自然界中發(fā)生時(shí)間長(zhǎng),，分布范圍廣，寄主昆蟲(chóng)豐富,，生存能力強(qiáng)的實(shí)際情況也支持這一分析結(jié)果,。
關(guān)鍵詞：多度，生態(tài)位寬度,，生態(tài)位重疊度，球孢白僵菌
The component of entomogenous fungi community and the niche of dominant species in pure forest of Masson's pine
CHEN Ming-Jun LIU Yu-Jun ZHOU Na FAN Mei-Zhen LI Zeng-Zhi HUANG Bo*
Anhui Provincial Key Laboratory of Microbial Control, Anhui Agricultural University, Hefei 230036, China
Abstract: 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, I. 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 I. cateinannulata and I. farinosa, and the largest time niche overlap occurred between I. 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.
Key words: abundance, niche breadth, niche overlap, Beauveria bassiana
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