Permanent Sample Plots in Large-Area Forest Inventory

1989

S. 243-252

6 Abb., 2 Tab.

Unselbständiges Werk

200040708

Theoretical and practical aspects of permanent sample plots are discussed in this paper. A study material of 6871 permanent sample plots was generated using increment sample plots of the 7th National Forest Inventory. The effect of measurement errors and use of increment functions as "a priori" information was studied via simulation experiments. The change in the growing stock volume between two consecutive measurement rounds was divided into the components drain, grwowth and mortality. Finally, a hypothetical inventory design using permanent sample plots was evaluated.