ZLV Online

Abstract

This study is focused on approach of formation in respect to biochemistry relations between surface humus and fallen dead wood in natural beechwoods. beechwoods are native Central European leading recent ecosystems but their present-time occurrences are restricted after longterm human disturbances. Sampling was situated to natural forests on characteristic sites of nutrient-rich, nutrient-medium and acidic trophic series from upland to mountain altitudes. Humus substances, oxidizable carbon, total nitrogen, activities of urease and acid phosphomonoestrase as well as microbial biomass were obtained. The methodology was separated to two ways: (1) Analysis of variance and Kruskal-Wallis´test were used for comparison of original data, transformed data and their balances. (2) Princilap component analysis defined perspectives of correlations. Computed results of multiple comparisons were translated to binary code and evaluated like digital comparator principle. We concluded that obtained biochemistry feedbacks between surface humus and dead wood could be evaluated using mainly data about microbial biomass, total nitrogen, humus substances and urease activity. Parameters of C/N indicate differences among fallen dead wood and humus. But only nitrogen content provides normal distribution and thus roughly shows humus attributes due to site characteristics.