干旱区生态环境知识资源中心(Arid): 固沙植被区生物土壤结皮中蓝藻群落的多样性

Arid

	固沙植被区生物土壤结皮中蓝藻群落的多样性
其他题名	Cyanobacterial Diversity in Biological Soil Crusts of Sand-fixing Vegetation Regions
	鲍婧婷; 王进; 陈翠云
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2015
卷号	35 期号:6 页码:1592-1598
中文摘要	采用非培养法对腾格里沙漠沙坡头固沙植被区的蓝藻多样性进行了研究,通过蓝藻通用引物PCR扩增其16SrDNA序列并构建16SrDNA文库,对阳性克隆进行测序、比对分析和构建系统发育树,同时通过Shannon- Weaver多样性指数、Chao和ACE丰富度指数及Simpson优势度指数对蓝藻多样性进行比较分析。结果表明:腾格里沙漠沙坡头地区蓝藻可分为5大类:颤藻目(Oscillatoriales,64.55%),色球藻目(Chroococcales,1.82%),念珠藻目(Nostocales,16.36%),宽球藻目(Pleurocapsales,6.82%)和未分类蓝藻(10.45%)。人工固沙植被区经过57年的恢复,蓝藻群落Chao和ACE丰富度指数均明显小于天然植被区(恢复逾100年),而且其群落结构与天然植被区仍然存在着统计学显著差异的区别,说明荒漠区生态系统微生物多样性的恢复是一个长期的过程。
英文摘要	The cyanobacterial diversity in Shapotou region of Tengger desert was investigated through a cultureindependent approach by constructing cyanobacterial specific 16S rDNA clone libraries.Positive clones selected randomly were sequenced and analyzed for phylogenetic tree constructing.Several diversity index including Shannon-Weaver diversity index,Simpson index,Chao and ACE richness index were done to estimate differences of cyanobacterial community between two regions.The results showed that the cyanobacterial community of Shapotou region of Tengger desert consists of Oscillatoriales(64.55%),Chroococcales(1.82%),Nostocales (16.36%),Pleurocapsales(6.82%)and unclassified Cyanobacteria(10.45%).After 57 years of restoration, Chao and ACE richness index of cyanobacterial community in artificial sand-fixing vegetation region were distinctively smaller than those of the natural vegetation region(recovering for more than 100 years),and there are still statistically significant difference in cyanobacterial community structure between the artificial sand-fixing vegetation region and natural sand-fixing vegetation region,which indicates the restoration of microbial diversity of desert ecosystem is a very long process.
中文关键词	生物土壤结皮 ; 蓝藻 ; 固沙植被区 ; 生物多样性
英文关键词	biological soil crusts Cyanobacteria sand-fixing vegetation region biodiversity
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MICROBIOLOGY
WOS研究方向	Microbiology
CSCD记录号	CSCD:5583211
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233791
作者单位	中国科学院寒区旱区环境与工程研究所, 甘肃省寒区旱区逆境生理与生态重点实验室;;中科院沙坡头沙漠研究试验站, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	鲍婧婷,王进,陈翠云. 固沙植被区生物土壤结皮中蓝藻群落的多样性[J]. 中国科学院西北生态环境资源研究院,2015,35(6):1592-1598.
APA	鲍婧婷,王进,&陈翠云.(2015).固沙植被区生物土壤结皮中蓝藻群落的多样性.中国沙漠,35(6),1592-1598.
MLA	鲍婧婷,et al."固沙植被区生物土壤结皮中蓝藻群落的多样性".中国沙漠 35.6(2015):1592-1598.