Legume N mineralization: Effect of aeration and size distribution of water-filled pores

摘要: Abstract The relative importance of air-filled porosity and the size distribution water-filled pores to mineralization legume N soil were assessed. Seven soils, with or without added legume, packed two bulk densities incubated at a constant water potential. Mineralization was measured over 70 d. accumulation inorganic in amended treatment described using two-pool model control one-pool model. Biomass C both treatments. found be influenced by volume fractions (VFP) that each assessed stepwise variable-selection regression procedures. parabolic dependence on has been observed when soils are different potentials not obvious equilibrated Air-filled positively related rate labile pool negatively resistant treatment. parabolically porosity, but did give rise predicted maximum within experimental range porosities. VFP dia