干旱区生态环境知识资源中心(Arid): 柴达木盆地中西部土壤中暗色丝孢菌群落多样性分析

Arid

	柴达木盆地中西部土壤中暗色丝孢菌群落多样性分析
其他题名	Diversity of soil dematiaceous hyphomycetes from central and western Qaidam Basin,Qinghai Province
	王洪凤; 于金凤; 吴悦明; 潘好芹; 张天宇
ISSN	1672-6472
出版年	2009
卷号	28 期号:3 页码:336-341
中文摘要	从柴达木盆地中两部采集土样59份,涵盖的生态类型有:沙漠、戈壁、湿地、小镇-绿洲等.分离获得暗色丝孢菌108株,经鉴定分属于15属.利用种群优势度、Shannon-Wiener多样性指数、物种均匀度、生态位宽度四项指数,对柴达木盆地中西部不同生境土壤中的有关暗色丝孢菌物种(属级)进行物种多样性分析.结果表明,该地区土壤中暗色丝孢菌的物种优势度存在明显差异:沙漠生境中,链格孢属Alternaria和细基格孢属Ulocladium真菌优势度较高;戈壁生境中,单格孢属Monodictys真菌的优势度最高;湿地和小镇-绿洲生境中,则分别以瓶霉属Phialophora和枝孢属Cladosporium真菌占优势.在小镇-绿洲生境中,土壤暗色丝孢菌的Shannon-Wiener多样性指数最高,均匀度较低;而在沙漠和戈壁生境中多样性指数明显较低,而物种的均匀度较高.在上述叫类生境中,链格孢属Alternaria和细基格孢属Ulocladium真菌具有较宽的生态位,为广适性物种;而平脐蠕孢属Bipolaris、卷旋孢属Cirrenaria、弯孢属Curvularia、矛束霉属Doratomyces、粘束孢属Graphium、漆斑霉属Myrothecium、齿梗孢属Scolecobasidium、帚霉属Scopulariopsis、节隔孢属Scytalidium和葡萄穗霉属Stachybotrys10个属真菌的生态位较窄,为狭适性物种.
英文摘要	One hundred and eight isolates of soil dematiaceous hyphomycetes belonging to 15 genera were found from 59 soil samples collected in central and western of Qaidam Basin covered with desert, gobi, swamp and town-oasis. The species dominance,Shannon-Wiener index, evenness and niche width were used to study the diversity of soil dematiaceous hyphomycetes in different ecosystem of Qaidam Basin. The results showed that the species dominant in the four ecosystem types was distinctly different. In desert ecosystem, Alternaria and Ulocladium were more dominant than other genera; Monodictys had the highest dominance in gobi;Phialophora and Cladosporium had the highest dominance in swamp and town-oasis. The diversity index of soil dematiaceous hyphomycetes was the highest but the evenness was lower in town-oasis, whereas in desert and gobi the diversity index was obviously lower, and the species evenness was higher. In the four ecosystem types, species of Alternaria and Ulocladium had wider niche breadth and were of widely adaptive species, while species of Bipolaris, Cirrenaria, Curvularia, Doratomyces, Graphium,Myrothecium, Scolecobasidium, Scopulariopsis, Scytalidium and Stachybotrys had narrower niche breadth and were of narrowly adaptive species.
中文关键词	优势度 ; 物种多样性 ; 生态位宽度
英文关键词	dominance species diversity niche breadth
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENGINEERING CHEMICAL
WOS研究方向	Engineering
CSCD记录号	CSCD:3767239
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223871
作者单位	山东农业大学植物病理学系, 泰安, 山东 271018, 中国
推荐引用方式 GB/T 7714	王洪凤,于金凤,吴悦明,等. 柴达木盆地中西部土壤中暗色丝孢菌群落多样性分析[J],2009,28(3):336-341.
APA	王洪凤,于金凤,吴悦明,潘好芹,&张天宇.(2009).柴达木盆地中西部土壤中暗色丝孢菌群落多样性分析.,28(3),336-341.
MLA	王洪凤,et al."柴达木盆地中西部土壤中暗色丝孢菌群落多样性分析".28.3(2009):336-341.