Ecological Effects of Pioneer Species on Soil Moisture Regime in An Early Successional Stage, Following Wind-throw in a Spruce Stand

Horsholm

2002

S. 193-194

Bandaufführung

9429S

81188

Pure stands of Norway spruce (Picea abies) outside its natural range, especially when growing on heavy soils at low elevation, are very susceptible. Calamities very often lead to large-scale destruction of uniform stands. In order to minimise management risks for the next rotation period, a stand conversion using a high percentage of deciduous trees is required. Natural regeneration of pioneer tree species, like birch (Betula pendula), plays an important role in managing the early successional stages after disturbances, where unfavourable environmental conditions, for instance an extreme soil moisture regime, are prevailing. In this study we investigate the effect of 20-year old birches, following a large-scale wind-throw of a mature spruce forest, on soil moisture regime. Preliminary results of this long-term project are presented.