The status of coniferous plants of Nam Nung nature reserve in Dak Nong province
Management of Forest Resources and Environment
THE STATUS OF CONIFEROUS PLANTS OF NAM NUNG NATURE RESERVE
IN DAK NONG PROVINCE
Nguyen Thi Thu1, Pham Thanh Trang2,
Phung Thi Tuyen3, Tran Thi Tu Duoc4, Hoang Thanh Luong5
1,2,3,4Vietnam National University of Forestry
5Daknong Department of Forest Protection
SUMMARY
In this study, we discovered additionally one species (Cephalotaxus mannii Hook.f.) and one family
(Cephalotaxaceae) of coniferous plants for Nam Nung Nature Reserve in Dak Nong province. Therefore, the
total of species and family of this area increased to seven and three, respectively (including Cephalotaxus
mannii Hook. f., Dacrydium elatum (Roxb.) Wall. ex Hook., Dacrycarpus imbricatus (Blume) de Laub.,
Podocarpus neriifolius D. Don; Keteleeria evelyniana Mast., Pinus massoniana Lamb., and
Pinus merkusii Jungh. & de Vriese. Especially, five species are listed in the IUCN Red as VU (two species) and
LC (three species). There is one species listed in the Vietnam Red Data Book (2007) as VU (Keteleeria
evelyniana Mast.). In addition, two species are listed in the Decree 32/ND-CP as IIA as Cephalotaxus mannii
Hook. f. and Keteleeria evelyniana Mast. Therefore, that species distributed in altitude from 800 m to 1,535 m.
These findings will significantly provide scientific data for biodiversity management especially for threatened
coniferous plant species in Nam Nung Nature Reserve. Furthermore, the result from our research will promote
the further study about biodiversity in this area.
Keywords: Coniferous, distribution, Nam Nung Nature Reserve, species composition.
conducted necessary research on species
compositions, conservation status and
I. INTRODUCTION
Nam Nung Nature Reserve (Dak Nong
province) is located in five communes: Nam
Nung, Nam N’Dir and Duc Xuyen (Krong No
district); Dac Hoa (Dak Song district) and
Quang Son (Dak Glong district), with 20,156
ha. Nam Nung Nature Reserve (Nam Nung
NR) has special climate with four seasons in a
day. Primary forests distribute from 800 m to
over 1,200 m. Nam Nung NR also possesses a
high biodiversity (Dak Nong Department of
Forest Protection, 2011). There are 881
vascular plant species, which belong to 541
genera, 175 families, and six phyla (Dak Nong
Department of Forest Protection, 2011). Many
species have a scientific value, especially in
conifer such as Cephalotaxus mannii Hook. f.,
Dacrydium elatum (Roxb.) Wall. ex Hook.
distribution of coniferous species in Nam Nung
NR in order to provide sufficient scientific data
for management and conservation of this area.
II. RESEARCH METHODOLOGY
2.1. Content
Research on species compositions and
distribution of coniferous species
Research on natural conservation status of
coniferous species
2.2. Methods
Secondary data collection
Desk study method was conducted, the
secondary data of coniferous plant diversity in
Nam Nung Nature were collected carefully
from the previous studies.
Field work
However,
by
supporting
economic
We used the current vegetation types map to
identify the distribution of all the vegetation
types in this area and then decide the transect
locations. Three transects were established
from the base to the top of the hills so that the
development, especially due to disaster and
human activities like over-exploitation, the
coniferous species have been damaged
seriously in recent years. Therefore, this study
JOURNAL OF FORESTRY SCIENCE AND TECHNOLOGY NO. 2 - 2018
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Management of Forest Resources and Environment
samples of all vegetation types on different
slopes and reliefs were recorded and identified.
On each transect, there are systematically-
spaced 15 plots of 25 m x 40 m size. All
coniferous species were recorded in the 1000
m2 plots. Also, the specimens were collected as
well as took pictures. At each plot, GPS data
were recorded for longitude, latitude and
altitude. All plants were listed and annotated.
Besides, interviewing local people, forest
rangers, and local authorities in the research
site about natural distributed, the current
situation as well as existing threats of
coniferous in Nam Nung NR was analysed.
III. RESULTS AND DISCUSSION
3.1. Diversity and distribution of coniferous
species in Nam Nung Nature Reserve
a. Diversity of coniferous species
Indentification
of
specimens
and
A total of seven coniferous species were
found in Nam Nung NR belonging to three
conservation assessment
Identification of plant specimens were made
based on the major literatures of Nguyen, T.H.
et al. (2004), Nghia, N.H. (2004), and other
recent reports. These specimens were
deposited in herbarium of Vietnam National
University of Forestry (VNUF). Conservation
assessment of the threatened species were
followed IUCN Red List, the Vietnam Red
Data Book, and the Degree No 32 issued by
Vietnamese government about list of
threatened species need to be conserved.
families
including
Cephalotaxaceae,
Podocarpaceae, and Pinaceae. The family
Podocarpaceae has three species such as
Dacrydium elatum (Roxb.) Wall. ex Hook.,
Dacrycarpus imbricatus (Blume) de Laub.,
and Podocarpus neriifolius D. Don. Likewise,
Pinaceae has three species (Keteleeria
evelyniana Mast., Pinus massoniana Lamb.,
and Pinus merkusii Jungh. & de Vriese). By
contrast, Cephalotaxaceae has only one species
(Cephalotaxus mannii Hook.f.).
Table 1. Coniferous species compositions in Nam Nung Nature Reserve
Collection
No.
Scientific name
Vietnamese name
number/Picture
I
1
Cephalotaxaceae
Đỉnh tùng
Đỉnh tùng
Cephalotaxus mannii Hook. f.
Podocarpaceae
NN160323001
II
2
Kim giao
Dacrydium elatum (Roxb.) Wall. ex Hook.
Dacrycarpus imbricatus (Blume) de Laub.
Podocarpus neriifolius D. Don
Pinaceae
Hồng tùng
Thông lông gà
Thông tre
NN160323002
NN160323003
NN160323004
3
4
III
5
Thông
Keteleeria evelyniana Mast.
Pinus massoniana Lamb.
Du sam núi đất
Thông mã vĩ
Thông ba lá
Picture
Picture
Picture
6
7
Pinus merkusii Jungh. & de Vriese
the remaining species are located from 1,200 m
to 1,535 m. Especially, Cephalotaxus mannii
Hook. f. was the first time recorded as
naturally distribution in Nam Nung NR and its
elevations from 1,200 m to 1,300 m.
b. Distribution of coniferous species
Most coniferous species in Nam Nung NR
are distributed between 800 m to 1,535 m
above sea level. Pinus merkusii Jungh. & de
Vriese and Pinus massoniana Lamb. are
located at elevations lower than 1,000 m while
142
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Management of Forest Resources and Environment
Table 2. Distribution of coniferous species
Vietnamese
Altitude
(m)
Located
points
No.
I
Scientific names
names
Đỉnh tùng
Cephalotaxaceae
421123/
1354809
1
Cephalotaxus mannii Hook. f.
Podocarpaceae
Đỉnh tùng
Kim giao
Hồng tùng
1200 - 1300
II
2
420206/
1355600
420708/
1355313
421156/
1355346
Dacrydium elatum (Roxb.) Wall.ex Hook.
1535
3
Dacrycarpus imbricatus (Blume) de Laub.
Thông lông gà
1200 - 1300
1200 - 1300
4
III
5
Podocarpus neriifolius D. Don
Pinaceae
Thông tre
Thông
420993/
1356373
419260/
1348797
418340/
1350190
Keteleeria evelyniana Mast.
Du sam núi đất
1196
800
6
7
Pinus massoniana Lamb.
Thông mã vĩ
Thông ba lá
Pinus merkusii Jungh. & de Vriese
887
Figure 1. Distribution of coniferous plantsin Nam Nung NR
Pinus massoniana Lamb.
Pinus merkusii Jungh. & de Vriese
Cephalotaxus mannii Hook. f.; Dacrydium elatum (Roxb.) Wall. ex Hook.; Dacrycarpus
imbricatus (Blume) de Laub.; Podocarpus neriifolius D. Don; and Keteleeria evelyniana Mast.
JOURNAL OF FORESTRY SCIENCE AND TECHNOLOGY NO. 2 - 2018
143
Management of Forest Resources and Environment
listed in the IUCN Red list (2001), two speices
3.2. Natural conservation status of
coniferous species in Nam Nung NR
are listed in the Vietnam Red Data Book
(2007) and one species is listed in Decree 32 o
the Vietnamese government in 2006.
Results from survey investigation indicated
that seven coniferous species were found in
Nam Nung NR. Of which five species are
Table 3. The natural conservation status of coniferous species in Nam Nung NR
Vietnam Red
Vietnamese
names
Decree
32/CP/2006
No.
Scientific names
Data Book
(2007)
IUCN, 2001
I
Cephalotaxaceae
Đỉnh tùng
Đỉnh tùng
Kim giao
VU A2cd
(ver 3.1)
1
Cephalotaxus mannii Hook. f.
IIA
II
Podocarpaceae
Least
Concern (LC)
(ver 3.1)
Least
Concern (LC)
(ver 3.1)
Dacrydium elatum (Roxb.)
Wall. ex Hook.
2
3
Hồng tùng
Dacrycarpus imbricatus (Blume)
de Laub.
Thông lông
gà
Least
4
III
5
Podocarpus neriifolius D. Don
Pinaceae
Thông tre
Thông
Concern (LC)
(ver 3.1)
VU A2cd;
B2ab(iii)
(ver 3.1)
Du sam núi
đất
Keteleeria evelyniana Mast.
VU A1a, c, d
IIA
Note: EN: Endangered; VU: Vulnerable; LC: Least concern; IIA: Restricting exploitation and use for
commercial purpose.
Figure 2. Stem and leaves
Figure 3. Seedling of
of Cephalotaxus mannii Hook. f.
Cephalotaxus mannii Hook. f.
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Table 4. The number of mature coniferous plants in Nam Nung NR
Average
DBH
Average
Height
(m)
Vietnamese
names
Number
of plants
No.
Scientific names
Status
(cm)
I
1
II
2
Cephalotaxaceae
Đỉnh tùng
Đỉnh tùng
Kim giao
Hồng tùng
Cephalotaxus
Hook. f.
mannii
3
8.2
9.6
Good
Podocarpaceae
Dacrydium
elatum
1
5
6
33
12.6
22
22
8.4
Good
Good
Good
(Roxb.) Wall. ex Hook.
Dacrycarpus imbricatus
(Blume) de Laub.
Podocarpus neriifolius
D. Don
3
Thông lông gà
4
III
5
Thông tre
Thông
13.2
Pinaceae
Keteleeria
evelyniana
Du sam núi đất
1
180
40
Good
Mast.
DBH: Diameter at breast height.
The number of mature coniferous plants
were few (16 plants). Especially, two species
including Dacrydium elatum (Roxb.) Wall. ex
Hook. and Keteleeria evelyniana Mast. have
only one individual tree. Most trees of all
species are growing well.
Table 5. The number of seedling trees in Nam Nung NR
Vietnamese
names
Numbers
of seedling
STT
Scientific names
Height (m) Growth
Origin
I
1
II
2
Cephalotaxaceae
Cephalotaxus
Hook. f.
Podocarpaceae
Dacrydium
(Roxb.) Wall. ex Hook.
Dacrycarpus imbricatus
(Blume) de Laub.
Podocarpus neriifolius
D. Don
Đỉnh tùng
mannii
Đỉnh tùng
Kim giao
Hồng tùng
1
0.8
1.2
Good
Good
Seed
elatum
0
30
0
3
Thông lông gà
Seed
4
III
5
Thông tre
Thông
Pinaceae
Keteleeria
evelyniana
Du sam núi đất
0
Mast.
Cephalotaxus mannii Hook. f. and
Dacrycarpus imbricatus (Blume) de Laub.
have natural regeneration gaps. However,
Dacrydium elatum (Roxb.) Wall. ex Hook.,
Podocarpus neriifolius D. Don, and Keteleeria
evelyniana Mast. have not had natural
regeneration gap. The resrult in this research
may give some evedences to propose solution
in biodiversity conservation in study area.
IV. CONCLUSION
Seven coniferous species belong to three
families Cephalotaxaceae, Podocarpaceae, and
Pinaceae were found in Nam Nung NR. Most
of them have high conservation values. Five
JOURNAL OF FORESTRY SCIENCE AND TECHNOLOGY NO. 2 - 2018
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Management of Forest Resources and Environment
species are listed in IUCN Red List (2001),
two species are listed in Vietnam Red Data
Book (2007), and one species is listed in
Decree 32/CP/2006 of the Vietnamvese
government. The majority of coniferous
species in Nam Nung NR are distributed from
800 to 1,535 m above sea level. Cephalotaxus
mannii Hook. f. is the first time recorded and
located from 1,200 m to 1,300 m.
REFERENCES
1. Ban, N.T. (Ed.) (2007). Vietnam Red Data Book,
Part 2 - Plants. Natural Science and Technology
Publishing House, Hanoi, Vietnam.
2. Dak Nong Department of Forest Protection
(2011). The result of biodiversity survey in Nam Nung
Nature Reserve, Dac Nong. Working paper, Dac Nong,
Vietnam.
3. Government of Vietnam (2006). Decreee
No.32/2006/ND-CP. Management of endagered,
precious and rare forest plants and animals. Ministry of
Agriculture and Rural Development, Hanoi, Vietnam.
4. IUCN (2001). Red List of Threadtened species
TM, International Union for the Conservation of Nature
and Nature Resources.
ACKNOWLEDGEMENTS
Authors would like to thank Nguyen Van
Huy (Vietnam National University of
Forestry), Mai Van Tien (Nam Nung NR) for
their kind help during the fieldwork. We also
thank to Tran Ngoc Hai, Vuong Duy Hung,
Pham Thanh Ha, and Ta Thi Nu Hoang
(Vietnam National University of Forestry) for
their kindly comments and contribution in
plant idenification.
5. Nghia, N.H. (2004). Conifers. Agricutural
Publishing House, Hanoi, Vietnam.
6. Nguyen, T.H., Phan, K.L., Nguyen. D.T.L.
Thomas, P.I., Farjon, A., Averyanov, L. & Regalado Jr.,
J. (2004). Vietnam Conifers: Fauna
International, Vietnam, Hanoi.
&
Flora
THÀNH PHẦN VÀ PHÂN BỐ CỦA CÁC LOÀI LÁ KIM
TẠI KHU BẢO TỒN THIÊN NHIÊN NAM NUNG - ĐẮK NÔNG
Nguyễn Thị Thu1, Phạm Thành Trang2,
Phùng Thị Tuyến3, Trần Thị Tú Dược4, Hoàng Thanh Lương5
1,2,3,4Trường Đại học Lâm nghiệp
5Chi cục Kiểm lâm Đắc Nông
TÓM TẮT
Trong quá trình nghiên cứu tính đa dạng khu hệ thực vật của Khu Bảo tồn thiên nhiên (KBTTN) Nam Nung
(Đắk Nông), chúng tôi đã phát hiện 7 loài thực vật lá kim và 3 họ. Bổ sung 1 loài và 1 họ thực vật lá kim cho
Khu Bảo tồn thiên nhiên Nam Nung (Đỉnh tùng - Cephalotaxus mannii Hook. f. thuộc họ Đỉnh tùng -
Cephalotaxaceae). Đặc biệt, trong số 7 loài thực vật lá kim được phát hiện có 5 loài có tên trong danh lục đỏ
IUCN (gồm 2 loài thuộc cấp VU và 3 loài thuộc cấp LC). Có 1 loài có tên trong Sách đỏ Việt Nam (2007)
(thuộc cấp VU). Có 2 loài thuộc cấp IIA (Nghị định 32/NĐ-CP). Các loài thực vật lá kim phân bố ở độ cao từ
khoảng 800 m đến 1.535 m. Trong đó, loài cây Thông mã vĩ được trồng ở khu vực vùng đệm của Khu bảo tồn,
5 loài còn lại có phân bố tự nhiên từ độ cao 1.100 - 1.535 m. Dẫn liệu bổ sung này không chỉ khẳng định giá trị
tiềm năng của khu hệ thực vật lá kim Nam Nung, mà còn góp phần quan trọng trong công tác quản lý đa dang
sinh học nói chung, nghiên cứu bảo tồn và phát triển nguồn gen thực vật có nguy cơ bị tuyệt chủng nói riêng tại
KBTTN Nam Nung.
Từ khóa: Khu Bảo tồn Thiên nhiên Nam Nung, phân bố, thành phần loài, thực vật lá kim.
Received
Revised
Accepted
: 02/3/2018
: 29/3/2018
: 05/4/2018
146
JOURNAL OF FORESTRY SCIENCE AND TECHNOLOGY NO. 2 - 2018
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