litter production of mixed deciduous forest at the...
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Litter Production of Mixed Deciduous Forest at the Maeklong
Watershed Research. Station
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Litter Production of Mixed Deciduous Forest at the Maeklong
Watershed Research Station
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Litter Production of Mixed Deciduous Forest at the Maeklong Watershed Research Station
Phanumard Ladpala
Abstract
The objective of the present study was to investigate litter production of a mixed
deciduous forest, carried out at the Maeklong Watershed Research Station, Kanchanaburi province.
Twenty our 1 x 1 m2 litter traps were set up in a 1 ha permanent sample plot established for the study
of vegetation structure and dynamics. Data were collected monthly from June 2003 - May 2005. The
mean annual litter production was 8.54 tons/ha. The total litter productions were 8.79 and 8.28
tons/ha in the first and second year, respectively. A reduction of 5.80% litter production was probably
due to occurrence of forest fire, which indicated as a significant factor affecting litter production. The
data gained in this study, together with aboveground biomass data, would be useful for estimation of
net primary production (NPP) and carbon sequestration in this mixed deciduous forest.
Keywords : Litterfall, Mixed Deciduous Forest, The Maeklong Watershed Research Station
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Table 1 Litterfall in mixed deciduous forest from June 2003 to May 2004 5
Table 2 Leaf litterfall (dry weight, kg/ha) of dominant trees in mixed deciduous forest
from June 2003 to may 2005 7
Appendix 1 Floristic composition (100 m. x 100 m. plot) , percent relative density, relative
frequency , relative dominance and importance value (IV) of 10 dominant trees
(DBH > 4.5 cm.) of mixed deciduous forest 11
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Ifts Figure 1 Seasonal pattern of rainfall and temperature at the Maeklong watershed research
station 2
Figure 2 The position of 24 litter traps in 1 ha permanent plot at mixed deciduous forest 3
Figure 3 The mean total litterfall (dry weight) in mixed deciduous forest, the Maeklong S
watershed research station, (a) Total litterfall, (b) Leaf, (c) Wood, (d) Reproductive,
(e) Other 6 S
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Table 1 Litterfall in mixed deciduous forest from June 2003 to May 2004
Year Dry weight (kg/ha)
Leaf Wood Reproductive Other Total
June 2003 -May 2004 5,966.13 1,843.68 79.83 902.86 8,792.50
June 2004 -May 2005 5,357.20 1,739.65 424.03 763.46 8,284.34
Mean 5,661.66 1,791.67 251.93 833.16 8,538.42
% 66.31 20.98 2.95 9.76 100.00
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Figure 3 The mean total litterfall (dry weight) in mixed deciduous forest,the Maeklong watershed research station,
(a) Total litterfall, (b) Leaf, (c) Wood, (d) Reproductive, (e) Other
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Table 2 Leaf litterfall (dry weight, kg/ha) of dominant trees in mixed deciduous forest from June 2003 to
- May 2005
Species June 03 - May 04 June 04 - May 05 Mean
Pterocarpus macrocarpus 711.58 318.33 514.96
Xylia xylocarpa 446.67 422.81 434.74
Schleichera oleosa 648 534.83 591.42
Holarrhena pubescens 16.67 32.08 24.37
Berrya cordfo1ia 54.42 9.17 31.79
Other species 2,069.16 2,013.65 2,041.41
Bamboo 2,019.63 2,026.33 2,022.98
Total 5,966.13 5,357.20 5,661.67
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Bunyavejchewin, S. 1997. Ecological studies of tropical semi-evergreen rain forest at
Sakaerat, Nakom ratchasima, Northeast Thailand, II. Litterfall. Nat. Hist. Bull. Siam.
Soc. 45: 43-52.
Hermansah, A. Z. 2002. Litterfall and nutrient flux in tropical rain forest, West Sumatra, Indonesia.
Im 17t WCSS, 14-21 August, Thailand. Symposium no. 1125 :1-9.
Liu, C.; CJ. Westman.; B. Berg., W. Kutsch., GZ. Wang., R. Man., and H. Ilvesniemi. 2004.
Variation in l itterfal l-climate relationships between coniferous and broadleaf forests in
Eurasia, Global Ecology and Biogeography 13: 105-114.
Sayer, E.S. 2005. Leaf litter manipulation in a tropical forest. The dissertation of Doctor of
__ Philosophy. University of Cambridge.
Spain, A.V. 1984. Litterfall and the standing crop of litter in three tropical Australia rain forest.
J. Ecol. 72 : 947-961.
Stocker, G.C., W.A. Thompson., A.K. Irvine., J.D. Fitzsimon., and P.R. Thomas. 1995. Annual
pattern of litterfall in a lowland and tableland rainforest in tropical Australia. Biotropica 27
412-420.
Suksawang, S., and N. Tangtham. 1996. Watershed balance of disturbed Forest watershed, western
Thailand, pp. 21-31. In Proceedings of the FORTROP'96 : Tropical Forestry in the 21st
Century 25-28 November 1996, Kasetsart University, Bangkok. Thailand.
Suksawang, S and M. Takahashi. 2000. Site overview and research activities at Thong Pha Phum
study site, pp. 19-22. In Proceedings of International Workshop on the Responses of Tropical
60 Forest Ecosystem to Long Term Cyclic Climate Change.
Wieder, R.K., and S. J. Wright. 1995. Tropical forest litter dynamics and dry season irrigation on
Barro Colorado Island, Panama. Ecology (Sept).
ftr
11
Appendix 1 Floristic composition (100 m. x 100 m. plot) , percent relative density, relative frequency , relative
dominance and importance value (IV) of 10 dominant trees (DBH ~! 4.5 cm.) of mixed deciduous
forest
Species Scientific name RDO RD RIP IV
Pterocarpus macrocarpus 23.68 5.02 5.82 34.52
U94 Xylia xylocarpa 12.20 7.76 6.88 26.84
vinifa Schleichera oleosa 12.37 5.48 5.82 23.67
bin"-d-34 Holarrhena pubescens 1.07 12.79 9.52 23.38
IJ'1)'U Berrya cordfo1ia 2.03 9.13 8.99 20.16
fl1112JJfl Vitex peduncularis 7.96 4.11 4.76 16.83
)Jl1l4 Dillenia aurea 8.19 3.20 2.65 14.04
LiLJn Lagerstroemia vilosa 2.44 2.74 3.17 8.35
Shorea siamensis 3.85 2.28 2.12 8.25
1111112J Bridelia retusa 0.86 3.20 3.70 7.76
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