By Henk Koop
No topic what forests are used for, woodland managers need to take care of interactions among person bushes and among timber and different wooded area organisms. to appreciate those interactions, long term tracking of spontaneous wooded area improvement is important. a whole tracking process has been constructed together with a working laptop or computer package deal for research of long term remark of woodland dynamics. The system's identify, "SILVI-STAR", is an acronym of SILVIgenesis and Single-tree three-d structure. a mode of nested plot information assortment on woodland structure and plant species composition has been constructed out for tracking purposes.
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Extra info for Forest Dynamics: SILVI-STAR: A Comprehensive Monitoring System
Phase definitions have been published by many authors: Niemann (1968), Leibundgut (1959, 1978b, 1982), Houtzagers (1954), Hillgarter (1971, 1976), Bouchon et al. (1973), Knapp (1974), Whitmore (1975), Mayer (1976), Cochet (1977), Derkman and Koop (1977), Halle et al. (1978), Oldeman (1974a, 1978, 1979, 1989), Bormann and Likens (1979), Koop (1981), Torquebiau (1985, 1986), Korpel (1982), van Baren and Hilgen (1984) and Koop and Hilgen (1986). 1. Examples of phase descriptions. N is the number of phases distinguished.
1). (1) X and y are variable Cartesian coordinates. When a 1 the equation represents a straight line, when a > 1 it becomes convex. This equation behaves nicely in the quadrant where x and yare positive. For the other quadrants the equation of the positive quadrant must be reflected. Cheviron (1985) uses a similar approach. For depicting trees in computer-plotted profile drawings, Katzler (1984) and Bucking et al. (1986) presented a model for broadleaved trees constructed of four quarters of ellipses: two quarter ellipses above the greatest crown width, that is fixed at 1/4 of the crown length and two below this width.
Except where the area to be mapped is covered by topographical maps that show enough detail and pattern for guidance in the field, the aerial photograph also serves as the topographical base for mapping. Individual tree crowns and canopy gaps, that can be seen on aerial photographs, are used as references. Vegetation composition of the mapped units is sampled in fixed 10 x 10 m2 plots. The data on vegetation composition are noted on standard forms first or entered in computer files directly on a hand-held computer in the format: plot number - species code - cover - species code - cover - ...
Forest Dynamics: SILVI-STAR: A Comprehensive Monitoring System by Henk Koop