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	Microbial biomass carbon and enzyme activities of urban soils in Beijing
	Wang M. E. ; Markert B. ; Shen W. M. ; Chen W. P. ; Peng C. ; Ouyang Z. Y.
	2011
关键词	Beijing urban soil Microbial community health Microbial biomass carbon Urease Invertase organic-matter urease activity heavy-metals pollution community microorganisms invertase indicator toxicity cadmium
英文摘要	Introduction To promote rational and sustainable use of soil resources and to maintain the urban soil quality, it is essential to assess urban ecosystem health. In this study, the microbiological properties of urban soils in Beijing and their spatial distribution patterns across the city were evaluated based on measurements of microbial biomass carbon and urease and invertase activities of the soils for the purpose of assessing the urban ecosystem health of Beijing. Materials and methods Grid sampling design, normal Kriging technique, and the multiple comparisons among different land use types were used in soil sampling and data treatment. The inherent chemical characteristics of urban soils in Beijing, e.g., soil pH, electronic conductivity, heavy metal contents, total N, P and K contents, and soil organic matter contents were detected. The size and diversity of microbial community and the extent of microbial activity in Beijing urban soils were measured as the microbial biomass carbon content and the ratio of microbial biomass carbon content to total soil organic carbon. Results and discussion The microbial community health measured in terms of microbial biomass carbon, urease, and invertase activities varied with the organic substrate and nutrient contents of the soils and were not adversely affected by the presence of heavy metals at p < 0.01. It was shown that the older and the biologically more stable part of city exhibited higher microbial activity levels than the more recently developed part of the city and the road areas of heavy traffic. It was concluded that the land use patterns in Beijing urban soils influenced the nature and activities of the microbial communities.
出处	Environmental Science and Pollution Research
卷	18
期	6
页	958-967
收录类别	SCI
语种	英语
ISSN号	0944-1344
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/22893]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Wang M. E.,Markert B.,Shen W. M.,et al. Microbial biomass carbon and enzyme activities of urban soils in Beijing. 2011.

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