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Responses of soil microbial biomass and bacterial community structure to closed-off management (an ecological natural restoration measures): A case study of Dongting Lake wetland, middle China
Dai, Juan1,2,3; Wu, Haipeng1,2,3; Zhang, Chang1,2; Zeng, Guangming1,2; Liang, Jie1,2; Guo, Shenglian1,4; Li, Xiaodong1,2; Huang, Lu1,2; Lu, Lunhui1,5; Yuan, Yujie1,2
2016-09-01
摘要Soil microbial biomass (SMB) and bacterial community structure, which are critical to global ecosystem and fundamental ecological processes, are sensitive to anthropogenic activities and environmental conditions. In this study, we examined the possible effects of closed-off management (an ecological natural restoration measures, ban on anthropogenic activity, widely employed for many important wetlands) on SMB, soil bacterial community structure and functional marker genes of nitrogen cycling in Dongting Lake wetland. Soil samples were collected from management area (MA) and contrast area (CA: human activities, such as hunting, fishing and draining, are permitted) in November 2013 and April 2014. Soil properties, microbial biomass carbon (MBC), and bacterial community structure were investigated. Comparison of the values of MA and CA showed that SMB and bacterial community diversity of the MA had a significant increase after 7 years closed-off management. The mean value of Shannon-Weiner diversity index of MA and CA respectively were 2.85 and 2.07. The gene copy numbers of 16S rRNA and nosZ of MA were significant higher than those of CA. the gene copy numbers of ammonia-oxidizing archaea (AOA) and nirK of MA were significant lower than those of CA. However, there was no significant change in the gene copy numbers of ammonia-oxidizing bacteria (AOB) and nirS. (C) 2016, The Society for Biotechnology, Japan. All rights reserved.
关键词Microbial biomass carbon Bacterial community diversity Nitrogen Ecological management Ecological restoration Wetland
DOI10.1016/j.jbiosc.2016.03.001
发表期刊JOURNAL OF BIOSCIENCE AND BIOENGINEERING
ISSN1389-1723
卷号122期号:3页码:345-350
通讯作者Zeng, GM (reprint author), Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.
收录类别SCI
WOS记录号WOS:000383818900015
语种英语