Frontier Tanzania Environmental Research REPORT 110 ...

Kazimzumbwi Forest Reserve
39
Total number of timber per hectare
250
200
150
100
50
0
A B C D E
Transect
Live timber Old cut timber New cut timber
Figure 10 Total number of live, old cut and new cut timber per hectare for each transect line.
5.4.4 OTHER FORMS OF DISTURBANCE
The most common form of disturbance other than pole and timber extraction throughout
Kazimzumbwi FR was the presence of footpaths; present in 18% of all 50m sample sections
(Table 10). Other commonly seen forms of disturbance included evidence of charcoal burning
(ranked 2), piles of timber, planks or poles and trapping (jointly ranked 3). No evidence of cattle
grazing or fresh settlement was seen during the survey.
Table 10 Incidences of various types of disturbance shown as a tally (of a total of 440 50m
transect sections) a percentage, and a rank.
Footpath Charcoal Timber/ Trapping Fire Clearing Cultivation Pitsaw Grazing
planks
/poles
Tally 80 43 30 30 19 12 5 1 0
Percentage 18.3 9.9 6.9 6.9 4.4 2.8 1.1 0.2 0
(%)
Rank 1 2 3 3 5 6 7 8 9
5.4.5 DISTURBANCE HOTSPOTS
Figures 10 to 16 summarise the specific locations of disturbance within the forest reserve.
‘Hotspots of disturbance’ have been identified and are classified as areas within the forest reserve
with more than a 30% incidence of a single disturbance type per transect section (a transect
section is made up of seventeen 50m sections running bewteen each vegetation plot). Hotspots
are summarised in Table 11.
At the time of study, northern border areas of the forest reserve were recovering from past fire
disturbance and suffering from charcoal exploitation, timber/plank/pole extraction and duiker
Frontier-TanzaniaCoastal Forest Research Programme