Literaturrecherche

Literatur Gebauer G, Jäger H-J, Giesemann A, Schulze E-D (1994) Isotope ratios and concentrations of sulphur and nitrogen in needles and soils of Picea abies stands as influenced by atmospheric deposition of sulphur and nitrogen compounds. Plant Soil 164(2):267-281

Literatur Kücke M, Schmid H, Spieß A (1994) A comparison of four methods for measuring roots of field crops in three contrasting soils. Plant Soil

Literatur Kaiser E-A, Martens R, Heinemeyer O (1994) Temporal changes in soil microbial biomass carbon in an arable soil : consequences for soil sampling. Plant Soil