8 cao melaleuca silviculture en
DESCRIPTION
I have no idea what this isTRANSCRIPT
-
Conservation and Development of the Kien Giang Biosphere Reserve Project
Climate Change, Conservation and Development: Practical Solutions from Kien Giang Province, Vietnam, 2-3 June 2011
Melaleuca for High Value
Timber
Tran Thanh Cao
Vice Director
sub FSSIV
-
Conservation and Development of the Kien Giang Biosphere Reserve Project
Climate Change, Conservation and Development: Practical Solutions from Kien Giang Province, Vietnam, 2-3 June 2011
Current situation
Traditionally high stocking , short rotation
Low value products, small poles and firewood
Price of these declining
Need to establish viable options for melaleuca
Timber high quality suitable for furniture
High shrinkage requires proper drying methods
-
Conservation and Development of the Kien Giang Biosphere Reserve Project
Climate Change, Conservation and Development: Practical Solutions from Kien Giang Province, Vietnam, 2-3 June 2011
Potential opportunity
Demand for quality furniture increasing
Reduced availability of suitable timber
supply
Vietnam furniture export market still
expanding
Provides opportunity for melaleuca timber
Improved silviculture needed to produce
quality timber
-
Conservation and Development of the Kien Giang Biosphere Reserve Project
Climate Change, Conservation and Development: Practical Solutions from Kien Giang Province, Vietnam, 2-3 June 2011
Characteristic of Melaleuca wood
Average ratio of bark, saft and heart wood of M. Leucadrendrom in An Giang.
TT Parts unit Age (years)
5 10 12
1 Bark ratio % 15.35 7.00 13.19
2 Saft wood ratio % 35.58 15.33 28.66
3 Heart wood ratio % 49.08 77.67 58.15 Ngun: Bi Duy Ngc (2009)
Log grade ratio (M.
Leucadendra 5 6 yaers and M.
Cajuputi 10 years)
D1,3: 4 - 14cm.
Melaleuca wood For Furniture
-
Conservation and Development of the Kien Giang Biosphere Reserve Project
Climate Change, Conservation and Development: Practical Solutions from Kien Giang Province, Vietnam, 2-3 June 2011
Log grade A (highest
quality) low below 10 %
due to branches rot.
Ngun: Bi Duy Ngc (2009)
Quality characteristics of Melaleuca round timber log
Melaleuca wood For Furniture
-
Conservation and Development of the Kien Giang Biosphere Reserve Project
Climate Change, Conservation and Development: Practical Solutions from Kien Giang Province, Vietnam, 2-3 June 2011
Characteristic of Melaleuca timber
Sawn timber of Song Trem factory
+ about 50% sawn timber of
Melaleuca has rots
Melaleuca wood For Furniture
-
Conservation and Development of the Kien Giang Biosphere Reserve Project
Climate Change, Conservation and Development: Practical Solutions from Kien Giang Province, Vietnam, 2-3 June 2011
The physical properties of Melaleuca timber
+ Following JTSs standard:
MOR & MOE is ranked highest (level 4).
+ However, high shrinkage rate of Malaleuca timber
Melaleuca wood For Furniture
-
Conservation and Development of the Kien Giang Biosphere Reserve Project
Climate Change, Conservation and Development: Practical Solutions from Kien Giang Province, Vietnam, 2-3 June 2011
Utilization of Melaleuca wood
2 2
1
3 4
2 2
1
5 4
1. Sawning
R1
D1
R2
D
2
+ 15%
Melaleuca wood For Furniture
-
Conservation and Development of the Kien Giang Biosphere Reserve Project
Climate Change, Conservation and Development: Practical Solutions from Kien Giang Province, Vietnam, 2-3 June 2011
Treatment by liquid with 30% of PEG600 chemical; time treatment: 6 hours;
temparature: 300 C.
2. Sawn Timber treatment
Utilization of Melaleuca timber
Melaleuca wood For Furniture
-
Conservation and Development of the Kien Giang Biosphere Reserve Project
Climate Change, Conservation and Development: Practical Solutions from Kien Giang Province, Vietnam, 2-3 June 2011
Timber DryingUtilization of Melaleuca wood
Drying duration: about 15 days
Temparature: 40 60oC
Melaleuca wood For Furniture
-
Conservation and Development of the Kien Giang Biosphere Reserve Project
Climate Change, Conservation and Development: Practical Solutions from Kien Giang Province, Vietnam, 2-3 June 2011
- Temperature is equal to air temperature
- Horizontal pressure p=1.5-2 (Mpa)
- Vertical pressure P=1-1.5 (Mpa)
- Time: (from 2 to 4 hours)
-PVAc glue
3. Panel board produced from Malaleuca timber
Utilization of Melaleuca wood
Melaleuca wood For Furniture
-
Conservation and Development of the Kien Giang Biosphere Reserve Project
Climate Change, Conservation and Development: Practical Solutions from Kien Giang Province, Vietnam, 2-3 June 2011
Improved silviculture
Species selection - Melaleuca leucadendra
Initial spacing, fertilising, weed control,
pruning
Longer rotation length to 20 years
Stable timber supply of quality logs essential
Positive future BUT fundamental issues to
be addressed
- optimising silviculture
- fire major risk
- economics of cash flow, market stability
-
Silviculture
-
Conservation and Development of the Kien Giang Biosphere Reserve Project
Climate Change, Conservation and Development: Practical Solutions from Kien Giang Province, Vietnam, 2-3 June 2011
- Hn t, Kin Giang
+ M. leucadendra: Weipa Old, Australia (m s 14147); Rifle Creek,
Australia (m s 15892),
+ M. cajuputi: Vnh Hng - Long An; Nhn Hng An Giang
- C Mau
+ M. leucadendra: Laurence, Rifle Creek v Weipa Old,
+ M. cajuputi: Vnh Hng - Long An; Nhn Hng An Giang.
Good Malaleuca varieties
Silviculture
Phng thc lm t
Trng rng trn lp
-
Conservation and Development of the Kien Giang Biosphere Reserve Project
Climate Change, Conservation and Development: Practical Solutions from Kien Giang Province, Vietnam, 2-3 June 2011
Rng Trm ta ta tha
Long An
Rng Trm c ta
tha Long An
Silviculture
-
Conservation and Development of the Kien Giang Biosphere Reserve Project
Climate Change, Conservation and Development: Practical Solutions from Kien Giang Province, Vietnam, 2-3 June 2011
Demonstrations - Thinning
Thinning trial in 4 and 7 year old plantations Retained stocking of 1,000 to 16,000 trees/ha 4 year old trial height growth increased by 170% 7 year old trial stem diameter growth increased 4 fold
Silviculture
-
Conservation and Development of the Kien Giang Biosphere Reserve Project
Climate Change, Conservation and Development: Practical Solutions from Kien Giang Province, Vietnam, 2-3 June 2011
Demonstrations
Fertiliser trial
Testing N, P, K , trace elements, lime
At 11 months major response to N,
height 116%
Silviculture
-
Conservation and Development of the Kien Giang Biosphere Reserve Project
Climate Change, Conservation and Development: Practical Solutions from Kien Giang Province, Vietnam, 2-3 June 2011
Demonstrations
Spacing trial Nelder Wheel
Initial stocking from 136 to 63,000 trees /
ha
At 2 years no difference in height but
stem diameter increased with distance
between trees Rep 4
Rep 3
Rep 2
Rep 1
-
Conservation and Development of the Kien Giang Biosphere Reserve Project
Climate Change, Conservation and Development: Practical Solutions from Kien Giang Province, Vietnam, 2-3 June 2011
Demonstrations
Weed competition trials planted Feb 2011
Designed to test response to duration
and timing of weed control
-
Conservation and Development of the Kien Giang Biosphere Reserve Project
Climate Change, Conservation and Development: Practical Solutions from Kien Giang Province, Vietnam, 2-3 June 2011
Conclusion
Compelling need for developing high value
melaleuca timber for economic, social and
environmental reasons
Local livelihood improvement
Regional mitigation of potential adverse
environmental impacts such as
- acid sulphate soils
- adaptation to climate change
-
-
Conservation and Development of the Kien Giang Biosphere Reserve Project
Climate Change, Conservation and Development: Practical Solutions from Kien Giang Province, Vietnam, 2-3 June 2011
Thank You For Your Attention