Conclude
1. Successfully built a flora list of Dakrong Nature Reserve including 1,412 species belonging to 645 genera, 150 families and 5 phyla.
2. Dakrong flora has 5 phyla: Magnoliophyta is the most diverse phyla with a total of 1369 species, 621 genera of 132 families, followed by Polypodiophyta 29 species/ 15 genera/ 12 families, Pinophyta: 10 species/ 6 genera/ 3 families and Equisetophyta is the least diverse phyla: 1 species/ 1 genus/ 1 family.
3. The Magnoliopsida class is dominant over the Liliopsida class with the ratios at the family, genus and species levels being 107/25 families; 509/112 genera and 1171/198 species, respectively.
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4. The 10 most diverse families account for 34.14% of the total number of species. The most prominent is the Euphorbiaceae family.
– Euphorbiaceae has up to 97 species, Rubiaceae family: 73 species, Lauraceae family: 51 species and Moraceae family: 50 species
5. The 10 most diverse genera, or in other words, the Top ten most diverse at the genus level of the Dakrong flora account for 11.64% of the total species of the system, notably the genera Ardisia (family Myrsinaceae), Syzygium (family Myrtaceae), Diospyros (family Ebenaceae) and Lithocarpus (family De).
– Fagaceae).
6. Dakrong flora has completely dominant tropical elements.
up to 95.8%, of which 66.08% belongs to pure tropical Asia ¸.
7. The Dakrong flora is dominated by tropical continental elements of Asia , accounting for 25.85% and further away from the Indian flora : 11.76%, the South China flora: 9.92%, and has little relation to the Malêsia region: 5.81%. and the Himalayas: 5.59%.
8. Dakrong flora is unique, which is shown through the endemic factor accounting for 15.44%, including endemic Vietnam factor accounting for 12.96%; near-endemic 2.05% and endemic Quang Tri 0.42%. Special
The rediscovery of a monotypic genus, found only in Vietnam, after 73 years is Oligoceras with the only species being Oligoceras eberhardtii .
9. The spectrum of life forms for the Dakrong flora is as follows:
SB = 77.69Ph+ 7.15Ch + 3.61Hm + 3.48Cr + 7.65Th + 0.07Hy + 0.35Succ
10. The number of species used in the Dakrong flora is 1,412, of which 726 species are used as medicine, accounting for 38.09%, and the number of edible plant species
The number of timber species is 395, accounting for 20.73% of the number of timber species with 276 species accounting for 14.48%, the number of ornamental tree species is up to 115 species accounting for 6.03% and other groups have low proportions.
11. Dakrong flora has 53 endangered species that need priority protection, accounting for 4% of the total number of species in the flora (Table 10).
Propose :
Dakrong Nature Reserve was newly established and put into operation in 2003 until now, due to limited time and budget, there are no conditions for detailed plant survey. Dakrong is the transition zone between the North and the South (According to NNThin 2004). This is a place where there are still many rare species that have not been discovered and need to be further investigated to supplement the plant list.
53 rare plant species have been recorded and a monotypic genus, only found in Vietnam, Oligoceras , with the only species being Oligoceras eberhardtii, has been rediscovered . Facing the trend of community economic development, Dakrong Nature Reserve is
Faced with risks and threats, effective measures are needed to preserve this valuable resource.
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