Root density and root biomass in pure and mixed forest stands of Douglas-fir and beech

Abstract

Below-ground interactions possibly play an important role in the success of mixed forests. Therefore, root density, root length, root biomass and rooting pattern were surveyed in representative pure and mixed stands of Douglas fir (Pseudotsuga menziesii) and beech (Fagus sylvatica) in the Veluwe area of central Netherlands. Each type of stand was represented by stands approximately 40 and 70 years old. The study was restricted to fine roots (