PROTOS, production and transport of organic solutes: Effects of natural climatic variation. Mid-term report 1998

acide fulvique acide humique agua del suelo agua superficial alemania allemagne azote buffering capacity carbon carbone carbono chimie du sol dissolution dissolving eau du sol eau superficielle environmental factors escorrentia espagne facteur du milieu factores ambientales forest ecology forest stands fosforo fulvic acids germany humic acids monitoring nitrogen noruega norway pedogenese peuplement forestier ph phosphore phosphorus picea abies procesos de transporte en el suelo quercus pyrenaica rodales ruissellement runoff soil chemistry soil genesis soil organic matter soil transport processes soil water spain surface water transport dans le sol vigilancia