The composition of organic phosphorus in soils of the Snowy Mountains region of south-eastern Australia

摘要: Few studies have considered the influence of climate on organic phosphorus (P) speciation in soils. We used sodium hydroxide–ethylenediaminetetra-acetic acid (NaOH–EDTA) soil extractions and solution 31P nuclear magnetic resonance spectroscopy to investigate P composition five alpine sub-alpine The aim was compare this set soils with those typically reported literature from other cold wet locations, as well Australian warmer drier environments. For all soils, majority detected an form (54–66% total NaOH–EDTA extractable P). Phosphomonoesters comprised largest pool (83–100%) prominent peaks assigned myo- scyllo-inositol hexakisphosphate (IP6), although trace amounts neo- d-chiro-IP6 stereoisomers were also present. Phosphonates identified coldest wettest locations; α- β-glycerophosphate mononucleotides minor components these contrasts that previously for warm, dry environments where inositol phosphate (IP6) less dominant or absent humic-P proportionally larger P. Instead, exhibited similarities cold, This provides preliminary evidence is a key driver variation