Evaluating humus forms variation in an unmanaged mixed beech forest using two different classification methods

The heterogeneity of humus components in a virgin beech forest

A non-random sampling design allowed to distinguish within a virgin beech ecosystem two main components of humus profile heterogeneity. The stratification of the profile into horizons reflects changes in the composition of the soil/litter matrix occurring under the influence of the anisotropic deposition of leaf and wood litter and the stratified occurrence of soil organisms (roots, microbes, a...

Influence of ground cover on earthworm communities in an unmanaged beech forest: linear gradient studies

Micro-scale changes in earthworm communities and ground cover types were studied along five transect lines in an unmanaged beech forest (Fontainebleau forest, France). Spatial patterns were interpreted to the light of interactions between earthworm species and forest architecture, ground vegetation and quantity as well as quality of litter. The anecic Lumbricus terrestris was associated with pa...

Plant Biodiversity under Impact of Slope Position in Managed and Unmanaged Beech Forest of Asalem-Gilan

This study was carried out in managed and unmanaged Fagus orientalis L. (beech) stands in the Asalem beech forest in order to compare the composition and diversity of plant species. Three V-shaped catena landforms were selected for each stand. Then, large quadrats, 400 m2 area, with selective method and within each of them, small quadrats, 4 m2 area, were established along each catena and slope...

Allometric Equations of Beech (Fagus orientalis L.) Biomass in Managed and Unmanaged Stands in Safarood's Forest, Mazandaran Province

   Biomass measurement is important in terms of ecological and economical evaluation of the structure and conditions of habitat and can provide an estimate for carbon sequestration in different organs of tree. In order to assess the amount of biomass in harvested and unmanaged Beech stands, two compartments (511 and 514) of Safaroodchr('39')s forest  were selected. A plot of 6.25 hectare from e...

Humus forms in two secondary semi-evergreen tropical forests