Soil Microbial Biomass and pH as Affected by the Addition of Plant Residues
The soil microbial biomass is involved in the decomposition of organic materials and thus, the cycling of nutrients in soils. Reductions in the size and activity of the microbial biomass are frequently used as an early indicator of changes in soil chemical and physical properties resulting from management and environmental stresses in agricultural ecosystems. In a laboratoryincubated soil, we found a strong relationship between microbial biomass C and microbial biomass N. Irrespective of the type of plant residues added, soil pH was significantly correlated with microbial biomass C and microbial biomass N. Different C/N ratio of the residues was the main characteristic that affected soil microbial biomass C, N and soil pH. Microbes played a main role in plant residues decomposition and indirectly influenced of soil pH.
Residue decomposition C and N dynamics Soil pH Microbial biomass
Yunfeng Wang Ling Zhou Jianjun Wu Clayton R Butterly Caixian Tang Jianming Xua
Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant Nutrition,College of Environmental Department of Agricultural Sciences,La Trobe University,Bundoora (Melbourne),Vic.3086,Australia
国际会议
杭州
英文
320-322
2009-10-10（万方平台首次上网日期，不代表论文的发表时间）