Glomalin accumulation in forest soils and their relating iron compounds

为了阐明日本森林土壤中球囊霉素的积累，研究了以下两种森林：长柄冬青林和锯缘栎林的Bradford反应性土壤蛋白（BRSP）含量，表明总球囊霉素，土壤有机碳，有机氮，细根生物量。这些参数在长梗冬青林中均高于锯齿栎林。锯缘栎林土壤中BRSP和有机碳、氮的含量约为长柄冬青林的一半。BRSP浓度与有机碳、有机氮浓度相关。特别是，BRSP对焦磷酸盐提取态铁浓度的增加速率在长柄冬青林下高于在锯齿栎林下。这些结果表明球囊霉素对长柄冬青林土壤有机质积累具有重要作用。

To clarify the glomalin accumulation in Japanese forest soils, concentrations of bradford reactive soil protein(BRSP) indicating total glomalin, soil organic carbon, organic nitrogen, fine root biomass were investigated in following two forests : an Ilex pedunculosa forest and a Quercus serrata forest. These parameters were higher in Ilex pedunculosa forest than in Quercus serrata forest. The concentration of BRSP and organic carbon and nitrogen in soils from Quercus serrata forest were approximately half those in the Ilex pedunculosa forest. The concentration of BRSP was related to concentrations of organic carbon, organic nitrogen. In particularly, the increment rate of BRSP to pyrophosphate extractable iron concentration at the Ilex pedunculosa forest soil was higher than that at Quercus serrata forest soil. These results suggest that glomalin has important role to soil organic matter accumulation in Ilex pedunculosa forest.