By Jean-Philippe Schütz, Timo Pukkala, Pablo J. Donoso (auth.), Timo Pukkala, Klaus von Gadow (eds.)
Although the vast majority of the world’s woodland ecosystems are ruled via uneven-sized multi-species stands, woodland administration perform and concept has all in favour of the advance of plantation monocultures to maximise the availability of bushes at comparatively cheap. Societal expectancies are altering, notwithstanding, and uneven-aged multi-species ecosystems, selectively controlled as Continuous conceal Forestry (CCF), are frequently believed to be improved to monocultures in addressing a variety of expectancies. This booklet provides tools that are correct to CCF administration and making plans: analysing woodland constructions, silvicultural and making plans, financial evaluate, in keeping with examples in Europe, Asia, Africa and North and South America.
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Additional info for Continuous Cover Forestry
WO / D Wr m rD1 for m ! 10) where WO is the estimate of W in the rth simulation. Staupendahl and Zucchini (2006) used sampling simulations in three hypothetical forests with a regular, random and clustered pattern and sample sizes varying between 5 and 50, with 1,000 replications each. They show that the point-based criterion WO p is virtually unbiased for the entire range of sample sizes and for different spatial patterns. They conclude that the performance of the neighborhood-based method is comparable to alternative methods that are more costly to implement, and recommend a sample size of 20–30 sample points per compartment.
Staff Paper Series Number 155. Department of Forest Resources, College of Natural Resources and Minnesota Agricultural Experiment Station, University of Minnesota, St. Paul, p 279 Guldin JM (1991) Uneven-aged BDq regulation of Sierra Nevada mixed conifers. West J Appl Forest 6(2):27–32 Gurnaud A (1882) Le contrˆole et le r´egime forestier. Revue des Eaux et Forˆets 21:1–23 Hern´andez-D´ıaz JC, Corral-Rivas JJ, Qui˜nones-Ch´avez A, Bacon-Sobbe JR, Vargas-Larreta B (2008) Evaluaci´on del manejo forestal regular e irregular en bosques de la Sierra Madre Occidental.
In this contribution we are using the term nearest neighbor statistics (abbreviated to NNS). NNS methods assume that the spatial structure of a forest is largely determined by the relationship within neighborhood groups of trees. These methods have important advantages over classical spatial statistics, including low cost field assessment and cohort-specific structural analysis (a cohort refers to a group of reference trees that share a common species and size class, examples are presented in this chapter).