The
two tally sheets used for collecting data in the field are shown in Annex 1.
The first sheet is for general information such as identification, location,
elevation and NTFPs. Information on location includes a global positioning
system (GPS) reading and forest strata information according to tree densities.
Information on NTFPs is limited to rattan, bamboo, palms and others. For trees
above 15 cm dbh, in addition to diameter, information is also collected on stem
quality, crown quality, illumination and other species (e.g. climbers and
lianas). The information is important because in addition to standard stock and
stand information on the trees in the residual stand, forest managers are also
interested in the general condition of those trees. For example, many large
trees may have been left behind in the residual stand. This leads to a high
volume and basal area. However, most of these trees may be damaged and decaying
and from a commercial point of view they are not valuable. Details of the
measurements and codes used are given in Annex 2.
The
second tally sheet is for recording data for the two fixed plots. In the first
5-m radius fixed plot, data on saplings with a dbh between 5 and 15 cm are
collected. This will record the number of saplings as well as basal area and
volume. However, some forest managers may not be interested in the basal area
or volume of small trees. In this case, information of the dbh can be omitted
and only trees need to be counted. The next sub-plot is the 2-m radius fixed
plot that is used to record seedling numbers. The information is useful for
estimating the regeneration potential of the stand. Details of the measurements
and codes used are given in Annex 2.
