中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Assessment of bacterial biomass in the highly contaminated urban Nanming River, Guiyang, SW China

文献类型:期刊论文

作者Hao Xiao;  Hua-Yun Xiao;  Pan Wu
刊名Acta Geochimica
出版日期2017
卷号36期号:4页码:638-644
关键词Δ13c Δ15n Bacterial Biomass n Budget Nanming River
英文摘要

High anthropogenic N loads and abundant bacteria are characteristic of highly contaminated urban rivers. To better understand the dispersal and accumulation of bacteria, we determined contents and isotopic compositions of suspended particulate organic matter (SPOM) and bacteria in a highly contaminated urban river (the Nanming) and effluents in winter and summer of 2013. Relative to SPOM, bacterial biomass in the river was depleted in 13C and 15N and its C/N ratio was lower (δ13C: − 33.2‰ ± 3.1‰; δ15N: − 1.5‰ ± 1.2‰; C/N: 4.8 ± 0.6), while effluents showed higher 13C and 15N contents and C/N ratios (δ13C: − 25‰ ± 2.1‰; δ15N: + 8.5‰ ± 1.1‰; C/N: 8.1 ± 1.2). Source recognition of SPOM was based on carbon isotopes because they are conservative and distinct between end-members (effluent detritus and bacterial biomass). Using a mixing model, bacterial biomass in the river was calculated to account for < 20% and < 56% of bulk suspended particulate organic nitrogen in winter and summer, respectively. An N budget showed that bacterial N was a small proportion of total nitrogen (< 7.4%) in the riverwater.

语种英语
源URL[http://ir.gyig.ac.cn/handle/42920512-1/7709]  
专题地球化学研究所_环境地球化学国家重点实验室
作者单位1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Lincheng West Road (Jinyang) 99, Guiyang 550081, Guizhou Province, China
2.Resource and Environmental Engineering College, Guizhou University, Guiyang 550025, China
推荐引用方式
GB/T 7714
Hao Xiao;Hua-Yun Xiao;Pan Wu. Assessment of bacterial biomass in the highly contaminated urban Nanming River, Guiyang, SW China[J]. Acta Geochimica,2017,36(4):638-644.
APA Hao Xiao;Hua-Yun Xiao;Pan Wu.(2017).Assessment of bacterial biomass in the highly contaminated urban Nanming River, Guiyang, SW China.Acta Geochimica,36(4),638-644.
MLA Hao Xiao;Hua-Yun Xiao;Pan Wu."Assessment of bacterial biomass in the highly contaminated urban Nanming River, Guiyang, SW China".Acta Geochimica 36.4(2017):638-644.

入库方式: OAI收割

来源:地球化学研究所

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