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Biodiversity and Local Perceptions |
Table 22. Richness (total number of species recorded per plot) of life forms of non-tree
species in all land types in Khe Tran
Land type Plot number
Garden
Plantation forest
Herbs
Lianas (woody
climbers)
Climbers (nonwoody
lianas)
Palms
Pandanus
Ferns
4 38 4 2 2
6 10 8 5 1 3
1 21 1 3
5 14 13 6 6
Primary forest 7 12 10 5 1 3 2
Rice field 10 31
Secondary forest
Shrub land
3 15 12 2 3 4
9 7 14 3 7 2 2
11 13 17 3 8 2 5 2 1
2 16 2 3 7 2
8 20 2 2
All plots 190 77 27 20 5 36 6 1
7.5. Species vulnerability
Ten plant species with threatened status were recorded in the field and/or in PDM
exercises. These threatened species and their status are shown in Table 23. Species
with undefined status are omitted. Data is based on checklist of WCMC (1994)
and IUCN (2006). None of the red-listed plant species recorded at Phong Dien and
Dakrong Nature Reserves and reported by BirdLife (Le Trong Trai et al. 2001)
were found in the sample plots.
For most of these threatened species villagers named uses, and four of the
species, Hopea odorata, Parashorea stellata, Afzelia xylocarpa and Pinus latteri,
were valued as very important ones. Those were found only outside the sampling
plots. Most of the threatened species recorded in the field were found in secondary
forests and no threatened species were found from intermediate or cultivated land
types.
All of the threatened species were considered to have substitute sources for
their particular use. Calamus tonkinensis, which is used for making furniture and
building roofs, is also listed as threatened. The biggest threats to Parashorea
stellata are habitat degradation and wood clear cutting, the latter being also
conducted by Khe Tran villagers. According to IUCN (2006), Amesiodendron
chinense is a dominant component of some forest localities and has been observed
to regenerate well, although population reductions have occurred. It was considered
Climbing ferns
Epiphytes