Post-glacial variations in distributions, 13C and 14C contents of aliphatic hydrocarbons and bulk organic matter in three types of British acid upland soils.

cambisol cambisoles cambisols carbon carbone carbono chromatographie chromatography cromatografia cyanophyta datation au radiocarbone depth gleysol gleysoles gleysols hidrocarburos hydrocarbons hydrocarbure microorganisme microorganismos microorganisms pedogenese physiographic soil types podzol podzoles podzols profondeur profundidad radiocarbon dating soil soil genesis soil morphological features soil organic matter sol sol de moyenne altitude suelo suelo de altura trait morphologique du sol upland soils