The results of previous NFIs show that the proportions of area and volume of forests in two age classes are relatively constant (Table 7).
Considering the mitigation effects of climate change by forests, it emerges that the increase in standing volume of forests in Romania is smaller than the additional harvest in Germany which serves fossil fuel substitution.
On the west coast, large volumes of forest products, coal, and crude oil are moved by tug and barge operations.
The uneven-aged, even-aged long rotation, and mixed harvest regimes were similar to one another in total area in each forest size class, timber volume produced and volume of wood on the forest floor.
The National Forest Inventory Forest Servicee 2007) estimated the total timber volume of broadleaf forest at 11 million m3 but, based on current production levels, the current standing value of sawlog output from native woodland is estimated to be only €1.4 million per year.
Productivity was defined as the mean annual increment of the stem volume of a forest stand in m3∙ha−1∙yr.−1.
In a first step, the volume per hectare of dead trees, i.e. the absolute loss in terms of volume, is calculated as the product of the volume of the forest stand before the disturbance, ( {V}_k^{mathrm{prior}}, ) and the volume loss rate, l V,k.
Finally the volume of the forest stand before disturbance for the next time step, ( {V}_{k+1}^{mathrm{prior}}, ) is calculated as the product of the residual stand volume of the current time step, ( {V}_k^{mathrm{res}}, ) and the volume growth multiplier of the next time step, M V,k + 1.
Typical examples include forest biomass or volume of wood products available for harvest.
Now, an analysis of global forest data suggests that forests are returning in more and more countries, which leads the authors to predict that the volume of wood in the world's forests will likely stabilize in the coming decades.
