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Table 1: five bamboo species studied in Luang Prabang Province, northern Laos.
463
Species
Local name
Growth
pattern
Culm
density
(ha-1)
Mean DBH with
range (cm)
Study site
Village
Altitude
(m)
Allometric equation for
AGB (kg)
Bambusa tulda
Bong
Sympodial
6059
3.38 (0.83−6.84)
Huay Khot
400−430
0.6062×DBH^1.559
Cephalostachyum virgatum
Dendrocalamus membranaceus
Gigantochloa sp.
Indosasa sinica
Hia
Sang
Sot
No Khom
Sympodial
Sympodial
Sympodial
Monopodial
6527
2336
8908
84000
3.45 (0.80−7.48)
5.21 (0.59−9.33)
3.67 (0.73−7.70)
1.95 (0.75−3.41)
Phu Luang
Huay Khot
Phu Luang
Na Kok
750−950
400−450
920−980
390−400
0.05671×DBH^2.607
0.3634×DBH^1.9938
0.09265×DBH^2.374
0.163×DBH^2.134
28
464
465
Table 2: aboveground biomass (AGB) and the components of net primary productivity (NPP) for the five bamboo species studied. The
values in parentheses are the proportions of litterfall (%).
Species
B. tulda
C. virgatum
D. membranaceus
Gigantochloa sp.
I. sinica
AGB (Mg
ha−1)
25.85
11.54
25.17
21.21
59.87
Litterfall
(Mg ha−1 yr−1)
∆AGB (Mg
ha−1 yr−1)
Leaf
Twig
Sheath
Flower
Total
NPP (Mg
ha−1 yr−1)
3.56
0.99
5.73
2.43
8.55
0.95 (68.5)
1.37 (56.1)
1.45 (58.7)
1.40 (62.2)
4.05 (71.1)
0.31 (17.8)
0.44 (18.1)
0.40 (16.2)
0.37 (16.5)
1.19 (21.0)
0.20 (13.7)
0.59 (24.2)
0.62 (25.1)
0.48 (21.3)
0.45 (7.9)
0.00
0.039 (1.6)
0.00
0.00
0.00
1.46
2.44
2.47
2.25
5.70
5.02
3.43
8.20
4.68
14.25
466
29
467
Table 3: culm dynamics for the five bamboo species studied.
Species
B. tulda
C. virgatum
D. membranaceus
Gigantochloa sp.
I. sinica
Mortality
(% yr−1)
Mean
Recruitment
rate (% yr−1)
95% CI
Mean
95% CI
1.28
6.89
3.09
3.55
3.48
0.34−2.72
5.60−11.26
1.03−3.31
1.67−4.02
1.80−5.82
15.20
16.91
23.39
15.01
17.61
10.24−18.76
12.88−20.76
18.82−26.52
11.22−16.33
12.76−21.41
468
30
469
Figure Legends
470
Figure 1: location of the study sites, Huay Khot, Na Kok, and Phu Luang villages, in
471
Luang Prabang Province.
472
473
Figure 2: monthly mean air temperature and precipitation during the study period
474
(April 2017−March 2018). Mean air temperature and precipitation from 2012 to
475
2016 are provided for comparison.
476
477
478
Figure 3: monthly variation in total litterfall for the five bamboo species studied (mean
± SE).
479
480
481
Figure 4: monthly variation in the productivity of newly recruited and dead culms for
the five bamboo species studied.
482
483
484
Figure 5: monthly variation in aboveground net primary productivity (NPP) for the five
bamboo species studied.
485
31
Air temperature (study period)
Mean air temperature (2012-2016)
Mean precipitation (2012-2016)
400
30
300
25
200
20
100
15
10
Apr May Jun
Jul
Aug Sep Oct Nov Dec Jan Feb Mar
2017
Fig. 2
Month
2018
Monthly mean air temperature (ºC)
Monthly precipitation (mm)
Precipitation (study period)
Monthly total litterfall (Mg ha-1)
0.7
Bong
Sang
Hia
Sot
No Khom
0.6
0.5
0.4
0.3
0.2
0.1
0.0
2017
Fig. 3
Month
2018
B. tulda
Recruited culm
Dead culm
1 C. virgatum
Monthly culm productivity (Mg ha−1)
D. membranaceus
Gigantochloa sp.
I. sinica
-1
2017
Fig. 4
Month
2018
Bong
Sang
Hia
Sot
No Khom
Monthly NPP (Mg ha-1)
4.0
3.0
2.0
1.0
0.0
2017
Fig. 5
Month
2018
...
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