Microbial activity and community diversity in a variable charge soil as affected by cadmium exposure

来源 :浙大学报(英文版)(B辑:生物医学和生物技术) | 被引量 : 0次 | 上传用户:laumingka
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Effects of cadmium (Cd) on microbial biomass, activity and community diversity were assessed in a representative variable charge soil (Typic Aquult) using an incubation study. Cadmium was added as Cd(NO3)2> to reach a concentration range of 0~16 mg Cd/kg soil. Soil extractable Cd generally increased with Cd loading rate, but decreased with incubation time. Soil mi-crobial biomass was enhanced at low Cd levels (0.5~1 mg/kg), but was inhibited consistently with increasing Cd rate. The ratio of microbial biomass C/N varied with Cd treatment levels, decreasing at low Cd rate (
其他文献
In order to analyze the failure data from repairable systems, the homogeneous Poisson process(HPP) is usually used. In general, HPP cannot be applied to analyze
The objective of this work is to investigate the fermentation capacity and metabolic characteristics of a novel strain of bacteria B49 isolated from anaerobic a
为揭示紫胶林-农田复合生态系统地表甲虫多样性,于2006-2007年在云南省绿春县牛孔乡采用陷阱法调查了天然紫胶林、人工紫胶林和旱地的地表甲虫群落。共采集标本1678头,分别隶
Gap statistic is a well-known index of clustering validity, but its realization is difficult to be comprehended and accurately determined. A direct method is pr
Energy, which has a bearing on both economic and national security, is of importance and a major constraining factor to the economic and social development of C
Current oil saturation in the Moxizhuang (莫西庄) Oil Field in central Janggar (准噶尔) basin was evaluated by logging interpretation and measured on core sampl
Abstract For estimation of the deposition fractions of radon progeny in different regions of the respiratory tract, a new sampler consisting of three different
To evaluate the long-term environmental effect of the nitrobenzene precipitated into Songhua River caused by the explosion accident of CNPC Jilin Petrochemical
The cavitation around a hydrofoil is studied experimentally tO shed light on the multiphase fluid dynamies.Different cavitation regimes are studied by using hig
采用常规解剖和组织学切片的方法,对长江上游宜宾江段长鳍吻的卵巢发育、卵子发生以及成熟系数的周年变化进行了研究.研究结果表明,长鳍吻(鱼句)卵巢发育分为Ⅵ期,卵母细胞发