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MINISTRY OF AGRICULTURE AND RURAL DEVELOPMENT
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SOCIALIST REPUBLIC OF VIETNAM
Independence – Freedom – Happiness
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No. 17/2022/TT-BNNPTNT
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Hanoi, October 27, 2022
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CIRCULAR
AMENDMENT TO CIRCULAR NO. 29/2018/TT-BNNPTNT DATED NOVEMBER
16, 2018 OF THE MINISTER OF AGRICULTURE AND RURAL DEVELOPMENT ON SILVICULTURE
MEASURES
Pursuant to Decree No.
15/2017/ND-CP dated February 17, 2017 of the Government administering
functions, tasks, powers and organizational structures of the Ministry of
Agriculture and Rural Development;
Pursuant to the Law on
Forestry dated November 15, 2017;
At the request of
Director General of Vietnam Administration of Forestry;
The Minister of
Agriculture and Rural Development promulgates Circular on amendments to
Circular No. 29/2018/TT-BNNPTNT dated November 16, 2018 of the Minister of
Agriculture and Rural Development on silviculture measures.
Article 1. Amendments
to Circular No. 29/2018/TT-BNNPTNT dated November 16, 2018 of the Minister of
Agriculture and Rural Development on silviculture measures
1. Amend Clause 7 Article 3 as follows:
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2. Amend Clause 15 Article 3 as follows:
“15. “a fast growing
tree” refers to a tree with average growth rate of diameter at breast height of
at least 2 cm/year or average yield in a rotation of at least 15 m3/ha/year,
given appropriate land conditions.”.
3. Amend Clause 16 Article 3 as follows:
“16. “a slow growing
tree” refers to a tree with average growth rate of diameter at breast height of
less than 2 cm/year or average yield in a rotation of less than 15 m3/ha/year,
given appropriate land conditions.”.
4. Add Clause 20 and Clause 21 following Clause 19 Article 3
as follows:
“20. “a naturally mature
cultivated forest” refers to a forest with at least 70% of total trees reaching
natural maturity where annual growth rate of forest volume approaches zero
(less than a thousandth);
21. “primary trees” refer
to trees planted to serve the purpose of the forest.”.
5. Amend Point a Clause 1 Article 4:
“a) Area ineligible to be
considered a forest: Depleted forest; abandoned farmland; savanna, land with
trees and shrubs; alluvial plain in estuaries, coastal areas with density of
target regenerating tree taller than 0,5 m above 500 trees/ha; wetland with
acid sulfate soil with density of target regenerating tree above 1000 trees/ha.
Target regenerating trees are relatively evenly distributed across the forest
or leaving less than 1000 m2 of forest gap.”.
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“a) Entities stated under
Point a Clause 1 of this Article and forest owners must choose any of the
following measures:
In case of special-use
forest (strictly protected section): Protection and prevention of currently
available target regenerating trees; fire protection and prevention of forest;
In case of special-use
forest (ecological restoration section), protection forest, production forest:
Protection and prevention of currently available target regenerating trees;
fire prevention and protection of the forest; clearing of vines, shrubs, misshapen
trees, pests, non-target trees; bud correction and trimming, leaving no more
than 2 buds per shoot, and forest cleaning;
In case of mangrove
forests and alkaline forest: Establishment of forest belts meeting natural
conditions of the region; clearing of shrubs, moss, and other objects
suppressing target regenerating trees; forming of protective barriers.”.
7. Amend Point a Clause 1 Article 5:
“a) Area ineligible to be
considered a forest: Depleted forest; abandoned farmland; savanna, land with trees
and shrubs; alluvial plain in estuaries, coastal areas with density of target
regenerating tree taller than 0,5 m ranging from 300 trees/ha to less than 500
trees/ha in case of protection forest, production forest or ranging from 100
trees/ha to less than 500 trees/ha in case of special-use forest (except
strictly protected section; wetland with acid sulfate soil with density of
target regenerating tree under 1000 trees/ha. Target regenerating trees are not
evenly distributed across the forest or leaving forest gap of 1000 m2
to less than 3000 m2.”.
8. Amend Clause 2 Article 5 as follows:
“a) Entities under Point
a Clause 1 of this Article shall conform to Point a Clause 2 Article 4 hereof;
entities under Point b Clause 1 of this Article shall conform to Point b Clause
2 Article 4 hereof;
b) Additional trees,
multi-purpose plants, non-timber trees:
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In case of protection
forest, native plants present in the area or from areas with similar ecosystem;
In case of production
forest, native plants with economic value, meeting production and business
purposes;
c) Standards of
cultivars:
With respect to
special-use forest and protection forest: Trees are planted using balled and
burlapped trees, height of saplings ranges from 0,5 m and diameter ranges from
0,5 cm or applied with national standards on forest trees in case of cultivars
with declared standards; depending on specific conditions of area of saline and
alkaline wetland, may be planted using balled and burlapped trees, bare root
trees, root, saplings; with respect to additional plants planted using seed,
root cuttings, stem cuttings: Conform to technical guidelines under Article 15
hereof;
With respect to
production forest: Ensure cultivar standards and quality in accordance with
regulations applicable to each cultivar.
d) Depending on density
of currently available target regenerating trees, determine density of
additionally planted trees to ensure that density of additional trees and
target regenerating trees does not exceed 800 trees/ha;
dd) Plant additional
trees in strips for area with unevenly distributed target regenerating trees;
width of strips ranges from 2 m to 3m, width of blank strips ranges from 6 m to
12 m; plant in bushes with for empty lands ranging from 1000 m2 to
3000 m2; planting pits which have side length of 30 and depth of at
least 30 cm (hereinafter specified as “30 x 30 x 30 cm”);
e) Tend to target
regenerating trees and additional trees, replace dead trees with healthy trees;
cut grass and plough around the trees in a circle with at least 0,6 m in
diameter;
g) Tending duration shall
not exceed 6 years. In the first 3 years after planting, trees shall be tended
to at least 2 times per year and 1 time per year from the 4th year
depending on vegetation state.”.
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“a) In case protection
forest is also a restored forest or depleted forest with tree volume below 30 m3/ha,
trees with sufficient height for participation in canopy which ranges from 400
trees/ha and target regenerating trees taller than 1 m which ranges from 500
trees/ha. Density of trees and target regenerating trees is relatively evenly
distributed throughout the area;
Bamboo forest which has
more than 60% coverage with 200 bushes/ha or more and is relatively evenly
distributed throughout the area;
b) In case production
forest is also a restored forest or depleted forest with tree volume below 30 m3/ha
and satisfying business objectives, canopy-layer and high quality trees which
exceed 500 trees/ha and number of target regenerating trees taller than 1 m
that exceeds 1000 trees/ha. Density of trees and target regenerating trees is
relatively evenly distributed throughout the area;
Bamboo forest that has
more than 70% coverage with 200 bushes/ha or more and is relatively evenly
distributed throughout the area”.
10. Amend Point a Clause 2 Article 6:
“a) With respect to trees
in protection forest: Clear vines, misshapen trees, pests, damaged trees; do
not clear shrubs and vegetation; keep health trees to maintain a minimum canopy
coverage of 0,6;
Clear at least once and
up to 3 times. Interval between clearing ranges from 3 years to 10 years.”.
11. Amend Clause 1 Article 7 as follows:
“a) With respect to
protection forest and special-use forest (except strictly protected sections)
that are restored forest or depleted forest with volume of standing tree below
30 m3/ha, trees with sufficient height for participation in canopy
which is below 400 trees/ha and target regenerating trees taller than 1 m which
is at least 500 trees/ha or trees with sufficient height for participation in
canopy which ranges from 400 trees/ha and target regenerating trees taller than
1 m which is below 500 trees/ha. Density of trees and target regenerating trees
is not evenly distributed throughout the area;
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b) In case production
forest is naturally restored forest or depleted forest with volume of standing
trees below 30 m3/ha and satisfying business objectives,
canopy-layer and good quality trees that are below 500 trees/ha and target
regenerating trees taller than 1 m that are more than 1000 trees/ha or
canopy-layer and good quality trees that are more than 500 trees/ha and target
regenerating trees taller than 1 m that are below 1000 trees/ha. Density of
trees and target regenerating trees is not evenly distributed throughout the
area;
Bamboo forest that has
coverage above 70% and less than 200 bushes/ha and is unevenly distributed
throughout the area.”.
12. Amend Point c Clause 2 Article 7 as follows:
“c) Practice dense
intercropping strips: In areas smaller than 1000 m2 or areas where
trees are not evenly distributed;
In case of dry forest:
Strips shall trace contour lines of the same level in areas with slope above 25
degree and in east-west direction in areas with slopes below 25 degree. In case
of coastal mangrove forest: Strips shall trace the coastline;
Based on shade tolerance
and height of trees in a gap to determine appropriate width of planted strip,
maximum width of a planted strip must equal 2/3 canopy height of the gap; clear
trees in dense strips while keeping target trees.”.
13. Amend Point h Clause 2 Article 7 are as follows:
“h) Forest tending:
Implement twice per year for the first 3 years after planting. Detailed tasks:
Planting new trees in place of dead trees, clear vines and weeds invading
planted strips, plough soil around the trunk in circle with diameter of 0,6 m
or more; regulate irrigation in case of mangrove forests and alkaline forests;
From the 4th
year onward, tend at least once every year for no more than 6 years (72 months)
until trees are 5 m in height or taller in case of fast growing trees and 2 m
in height or taller in case of slow growing trees. Detailed tasks: Clear shrubs
and plants invading planted strips, vines, non-target trees in gaps; regulate
irrigation in case of mangrove forests and alkaline forests.”.
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“d) Deal with vegetation
in accordance with land conditions and ecological characteristics of the
species.”.
15. Insert Point e following Point dd Clause 1 Article 8:
“e) Broadleaf deciduous
forest that can no longer be restored into forests with economic value, with
indicators such as: Forest canopy destroyed, canopy coverage in the middle of
rainy season below 0,3; number of target, good quality trees below 50 trees/ha;
volume of trees with minimum diameter of 6 cm measured at 1,3 m high below 30 m3/ha;
number of target regenerating, good quality goods taller than 1 m below 700
trees/ha. Density of trees and target regenerating trees is not evenly
distributed throughout the area.”.
16. Amend Point d Clause 2 Article 9:
“d) Standards of
cultivars:
Primary trees must be
sown, balled and burlapped; trees named under List of primary forest trees must
meet national standards on cultivars;
With respect to cultivars
in mangrove forests and alkaline forests: Balled and burlapped trees, roots,
saplings, and bare root trees are viable for forestation depending on specific
conditions;
With respect to trees
planted by seed, root cuttings, or stem cuttings for the purpose of
forestation: Conform to technical guidelines under Article 15 hereof.”.
17. Amend Point a Clause 2 Article 10:
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Subjects stated under
Point a Clause 1 of this Article shall choose plants appropriate to land
conditions: Prioritize native plants or domesticated plants that have been
planted for a long time, growing and developing to fit local ecosystem; tree
with dense foliage, evergreen, well-developed root system, long tree life;
choose auxiliary plants to be planted in-between primary trees without
affecting primary trees, including fast growing trees that contribute towards
soil improvement or produce food, foodstuff, multi-purpose trees, herbal
plants, trees producing non-timber forest products;
Subjects stated under
Point b Clause 1 of this Article, choose trees with deep and firm roots,
prioritize native plants which can grow in harsh land conditions and withstand
the weather and pests;
Subjects stated under
Point c Clause 1 of this Article, choose plants that can adapt to saltwater and
brackish water; prioritize native plants, domesticated plants which have
previously been successfully used for the purpose of forestation in alluvial
plains in estuaries, coast, and in other harsh land conditions.”.
18. Amend Point b Clause 2 Article 10:
“b) Subjects stated
under Point a and Point b Clause 1 of this Article, clear vegetation in strips
or in bushes. Vegetation can be gathered into strips following contour lines
where land slopes; vegetation can be cleared where land slopes below 25 degree
as long as tree strips on top of mountain ridges, along streams, riverbanks,
and lakes. Vegetation clearing must avoid all available trees, target
regenerating trees and must not be implemented by burning; in areas where land
slopes more than 25 degrees, create localized planting pits of dimension 30 x
30 x 30 cm or more parallel to contour lines or diagonal to primary wind
direction, seal the pits and apply starter fertilizer.”.
19. Replace the phrase “400 trees/ha” with “600 trees/ha” under
Point dd Clause 2 Article 10.
20. Remove the phrase “in areas with special land conditions”
under Point c Clause 2 Article 11.
21. Amend Point c Clause 1 Article 12 as follows:
“c) Protection forest
after extracting intercropped plants and fast growing trees serving soil
improvement.”.
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“d) Protection forests offering
protection against wind, sand; protection forests offering protection against
waves and ineligible to be considered forest; cultivated production forests
converted to protection forests, special-use forests; cultivated forests
achieving natural maturity with insufficient primary tree density of 600
trees/ha with respect to protection forest. Canopy coverage below 0,3.”.
23. Insert Point c following Point b Clause 2 Article 12 as
follows:
“c) Protection forests
offering protection against wind, sand; protection forests offering protection
against waves and ineligible to be considered forest; cultivated production
forests converted to protection forests, special-use forests; cultivated
forests achieving natural maturity: Depending on density, may plant additional
trees to fulfill primary tree density or forest density. Strip planting or
spacing shall conform to Points b, c, d, dd, g, and h Clause 2 Article 7; hedge
planting shall conform to Clause 3 Article 7 hereof.”.
24. Amend Clause 1 Article 13 as follows:
a) With respect to fast
growing trees: Tending shall cease when the trees reach 3 years old (36 months
old);
b) With respect to slow
growing trees and coastal forests: Tending shall cease when the trees reach 5
years old (60 months old).”.
25. Amend Point d Clause 2 Article 13:
“d) Re-planting: Re-plant
in the first year since planting for fast growing trees if 85% of the original
planted plants survive. For slow growing trees and coastal forest: In the first
3 years after planting, if percentage of surviving plants is lower than
commissioning value or forest density, re-planting is required. Number of trees
re-planted varies depending on current density in order to meet forestation
requirements. Age of cultivars for re-planting shall match the year of
forestation.”.
26. Amend Clause 1 Article 14 as follows:
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b) Production forests
that are fast growing, purebred, even-aged trees on good land conditions, soil
thickness above 50 cm, occasional stormy weather; density of cultivated forests
exceeding 1000 trees/ha in order to transform small-sized timber forests to
large-sized timber forests;
c) Closed-canopy
protection forests with forest canopy greater than 0,6 and primary tree density
exceeding 600 trees/ha (for headwater protection forest) or exceeding 1500
trees/ha (for coastal forest). Primary tree density is evenly distributed
throughout the area;
d) Protection forest,
production forest: Plant native plants which have been previously used for the
purpose of forestation after fundamental design has been complete until closed
canopy.”.
27. Amend Point b Clause 2 Article 14:
“b) With respect to
production forests: Thin misshapen trees, trees infected with pests, crowded,
not meeting business goals; trees growing normally under high density; retain
healthy plants, with well-rounded canopy, straight and bark. There are 4 levels
of thinning intensity: Low level means distance between retained trees is
smaller than 1/3 of diameter of canopy of trees at clear-cut age; moderate
level means distance between retained trees ranges from 1/3 to under 1/2 of
diameter of canopy of trees at clear-cut age; high level means distance between
retained trees ranges from 1/2 of diameter of canopy to just under diameter of
canopy of trees at clear-cut age; very high level means distance between
retained trees is equal to or larger than diameter of canopy of trees at
clear-cut age;
With respect to
protection forests: Thin crowded auxiliary trees or primary trees; thin
misshapen trees, trees infected with pests, poor growth; thinning intensity
must not extend past 20% of total tree volume; trees retained for nursing must
be primary trees with at least average growth quality, well-rounded canopy,
straight and evenly round bark, and even distribution throughout the area;
Thinning shall be
implemented from one to three times with 2 to 6 years in interval depending on
cultivars, land conditions, age, and thinning intensity; thin again when the
forest canopy is closed following the previous thinning;
Thinning time: In dry
seasons or months with low precipitation (before or after reproductive
season).”.
28. Amend Point g Clause 2 Article 14:
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Density of retained trees
must be at least 600 primary trees/ha in headwater protection forest and at
least 1500 trees/ha in mangrove forests and alkaline forests. Density of
primary trees is evenly distributed throughout the plot.”.
29. Insert Point i following Point h Clause 2 Article 14 as
follows:
“i) With respect to
protection forest, production: Plant native plants which have been successfully
used for the purpose of forestation following fundamental design until canopy
is closed, adopt technical measures at least once per year in accordance with
Point a Clause 2 Article 14 hereof.”.
30. Insert Point d following Point c Clause 2 Article 15 as
follows:
“d) Advise People’s
Committees of provinces to distribute fast growing trees, slow growing trees;
target trees, and non-target trees for protection forests and production
forests in the provinces.”.
Article 2.
Implementation
1. This Circular comes
into force from December 12, 2022.
2. Validity and
implementation of programs and projects utilizing silviculture measures
approved before the effective date hereof shall conform to Circular No.
29/2018/TT-BNNPTNT dated November 16, 2018 of the Minister of Agriculture and
Rural Development.
Difficulties that arise
during the implementation of this Circular should be reported to the Ministry
for consideration./.
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PP. MINISTER
DEPUTY MINISTER
Le Quoc Doanh