作者: Kai Wei , Tao Sun , Jihui Tian , Zhenhua Chen , Lijun Chen
DOI: 10.1016/J.FORECO.2018.04.035
关键词: Nitrogen 、 Bacteria 、 Deposition (aerosol physics) 、 Environmental chemistry 、 Randomized block design 、 Phosphorus 、 Biomass 、 Larix gmelinii 、 Urea 、 Chemistry
摘要: Abstract Atmospheric nitrogen (N) deposition can affect soil microbial biomass, phosphatase activity, and the concentrations of organic phosphorus (P), inorganic P available P, but changes in biomass under mixed N addition their relationships with turnover forest ecosystems are not fully understood. In this study, a simulated experiment was conducted Larix gmelinii plantation Northeastern China to investigate variation forms as well between these features. The arranged randomized block design three replications for each treatment, including control (no addition, CK), total (NH4NO3, TIN), (inorganic ratio 7:3, ION), (urea glycine 1:1, TON). results indicated that there significant difference response biochemical characteristics different types addition. Soil bacteria actinomycetes, alkaline phosphomonoesterase (AlP) oxalate-extracted aluminum (Al), cMonoesters, cDiesters orthophosphate were significantly increased by N, whereas they affected single or Compared CK increase Al oxides ION treatment cMonoesters concentrations, bacterial contributed AlP activity. Moreover, also concentration enhanced immobilization compared treatment. However, no other treatments, which could be attributed Overall, findings suggest play important roles maintaining availability accelerating conditions atmospheric plantation.