Forest Dynamics: SILVI-STAR: A Comprehensive Monitoring by Henk Koop

By Henk Koop

No topic what forests are used for, wooded area managers need to care for interactions among person timber and among bushes and different wooded area organisms. to appreciate those interactions, long term tracking of spontaneous wooded area improvement is critical. an entire tracking method has been built together with a working laptop or computer package deal for research of long term remark of wooded area dynamics. The system's identify, "SILVI-STAR", is an acronym of SILVIgenesis and Single-tree 3-dimensional structure. a mode of nested plot info assortment on wooded area structure and plant species composition has been built out for tracking purposes.

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On these maps, all cadastral units are charted at scale 1:5000. Landownership and use are registered. In fact, these maps were used as a basis for the first ordnance survey map. A useful source of information for more recent history is aerial photography. , but also information from archives and personal communication from local people may help to solve questions about former local land use. Rackham (1976, 1980) and Peterken and Jones (1987) mapped ancient woodlands by collating historical information sources with mapping of earthworks that mark former woodland boundaries.

The plots are photographed weekly, using a camera-stand that has a 41 unique fitting on the metal framework that outlines the plots. The long-term photographic series can afterwards be used for different purposes and analyzed in the laboratory. An advantage of smaller plots is that they are easier and more accurate, and thus repeatable cover assesment. Since Braun-Blanquet (1964) developed the first scale for cover assessment, many modifications have been proposed (Knapp 1984). Londo (1984) reviews the development and points out the advantages of the decimal scale for rei eves of permanent quadrats, first suggested by Doing Kraft (1954).

The method can be used for selecting transect intervals in an "objective" manner for more detailed analyses. In a strip transect all trees that have their tree base within the borderlines of a rectangular strip are drawn. The optimal width of the strip transect depends on stand density, in the way that optimal thickness of the microtome slices depends on the nature and size of the cells in a tissue. According to Oldeman (1980), in general a width 38 Sm 10m Fig. 10. Procedure of transect drawing according to Koop (1981).

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