Shifts in the abundance and community structure of soil ammonia oxidizers in a wet sclerophyll forest under long-term prescribed burning

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Shifts in the abundance and community structure of soil ammonia oxidizers in a wet sclerophyll forest under long-term prescribed burning
	Long, Xi-En ; Chen, Chengrong ; Xu, Zhihong ; He, Ji-zheng
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2014
卷号	470 期号:1 页码:578-586
关键词	Ammonia-oxidizing bacteria Ammonia-oxidizing archaea Abundance Community composition Prescribed burning Nitrification
ISSN号	0048-9697
中文摘要	Fire shapes global biome distribution and promotes the terrestrial biogeochemical cycles. Ammonia-oxidizing bacteria (AOB) and archaea (AOA) play a vital role in the biogeochemical cycling of nitrogen (N). However, behaviors of AOB and AOA under long-term prescribed burning remain unclear. This study was to examine how fire affected the abundances and communities of soil AOB and AOA. A long-term repeated forest fire experiment with three burning treatments (never burnt, B0; biennially burnt, B2; and quadrennially burnt, B4) was used in this study. The abundances and community structure of soil AOB and AOA were determined using quantitative PCR, restriction fragment length polymorphism and clone library. More frequent fires (B2) increased the abundance of bacterium amoA gene, but tended to decrease archaeal amoA genes. Fire also modified the composition of AOA and AOB communities. Canonical correspondence analysis showed soil pH and dissolved organic C (DOC) strongly affected AOB genotypes, while nitrate-N and DOC shaped the AOA distribution. The increased abundance of bacterium amoA gene by fires may imply an important role of AOB in nitrification in fire-affected soils. The fire-induced shift in the community composition of AOB and AOA demonstrates that fire can disturb nutrient cycles. (C) 2013 Elsevier B.V. All rights reserved.
WOS记录号	WOS:000331415600063
公开日期	2015-03-23
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/9225]
专题	生态环境研究中心_城市与区域生态国家重点实验室生态环境研究中心_土壤环境科学实验室
推荐引用方式 GB/T 7714	Long, Xi-En,Chen, Chengrong,Xu, Zhihong,et al. Shifts in the abundance and community structure of soil ammonia oxidizers in a wet sclerophyll forest under long-term prescribed burning[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2014,470(1):578-586.
APA	Long, Xi-En,Chen, Chengrong,Xu, Zhihong,&He, Ji-zheng.(2014).Shifts in the abundance and community structure of soil ammonia oxidizers in a wet sclerophyll forest under long-term prescribed burning.SCIENCE OF THE TOTAL ENVIRONMENT,470(1),578-586.
MLA	Long, Xi-En,et al."Shifts in the abundance and community structure of soil ammonia oxidizers in a wet sclerophyll forest under long-term prescribed burning".SCIENCE OF THE TOTAL ENVIRONMENT 470.1(2014):578-586.