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- James, Jason N.; Gross, Cole D.; Dwivedi, Pranjal; Myers, Tyler; Santos, Fernanda; Bernardi, Rodolpho; Faria, Marianne Fidalgo de; Guerrini, Iraê Amaral; Harrison, Rob; Butman, David
- Geoderma 2019 v.345 pp. 38-50
- B horizons; Eucalyptus; Fourier transform infrared spectroscopy; Oxisols; biodegradability; biogeochemical cycles; cation exchange; cerrado; ecotones; forest stands; forests; hydrophobic bonding; land use change; microbial biomass; microorganisms; moieties; nuclear magnetic resonance spectroscopy; plantations; rooting; silviculture; soil minerals; soil organic matter; soil profiles; subsurface soil layers; trees; understory; water solubility; Brazil
- ... The Brazilian Cerrado has undergone extensive land-use change in the past century with large areas converted to agriculture and silviculture. Eucalyptus is the dominant planted tree species in Brazil, but the short rotations (6–7 years) and the associated soil disturbances can reduce soil organic matter (SOM), particularly in subsurface soil over long timeframes. SOM is critical to the continued p ...
- McLaren, Timothy I.; Verel, René; Frossard, Emmanuel
- Geoderma 2019 v.345 pp. 31-37
- nuclear magnetic resonance spectroscopy; phosphorus; soil; soil organic matter; stable isotopes; terrestrial ecosystems
- ... In terrestrial ecosystems, a large proportion of the phosphorus (P) in soil is often found within soil organic matter. However, the majority of organic P in soil remains ‘unresolved’ and is largely observed as a ‘broad’ signal within the phosphomonoester region of a solution 31P nuclear magnetic resonance (NMR) spectrum on soil extracts. Our aim was to gain insight into the composition of four soi ...