Journal of Tropical Forest Science 4(4):

Transcription

1 Journal of Tropical Forest Science 4(4): ALLOMETRY

2 Journal of Tropical Forest Science 4(4):

3 Journal of Tropical Forest Science4(4): it important to test this relationship for tropical multipurpose trees. The allometry of leaf biomass has been found to vary with site or fertilisation even when wood biomass allometry did not change (Cromer & Williams 1982, Snowdon 1985, Adams

4 Journal of Tropical Forest Science 4(4): Experimental design

5 Journal of Tropical Forest Science 4(4): Statistical analysis Although allometric equations describe

6 Journal of Tropical Forest Science 4(4): Acacia auriculiformis 10.00; Acacia mangium ^10.0, ~ : 30.50; I : Eucalyptus camaldulensis : ^ 5.00 j Gliricidia septum ; T Leucaena diversifolia , 5.00: , 0.05: Figure 1. Relationship between tree woody biomass (WB, kg) and basal diameter (D, cm) for Acacia auriculiformis, Acacia mangium, Eucalyptus camaldunlensis, Gliricidia sepium and Leucaena diversiolia at 6 (O), 12 ( ), 18 (Q) and 24 ( ) months ( solid lines are the allometric relationships

7 Journal of Tropical Forest Science4(4): Acacia auriculiformis Acacia mangium JlO.O- 5.0^ : Eucalyptus camaldulensis Gliricidia sepium JjEFol : : Leucaena diversifolia 10.0-; 5 5.0: «1 ' Figure 2. Relationship between tree leaf area (LA, m 2 ) and basal diameter ( D, cm) for Acacia auriculifarmis, Acacia mangium, Eucalyptus camaldulensis, Gliricidia sepium

8 Journal of Tropical Forest Science 4(4): Acacia auriculiformis 'So 10.0 rs o 5.0 TJ O Leucaena diversifolia P : ' 5.0- O> A O -o oo i.o- A O 0.5 o o * 0.1 Basal diameter 10

9 Journal of Tropical Forest Science 4(4): Acacia auriculiformis J n 6o O (P o OA cp Leucaena diversifolia A A n : i " CJ <L> o ,

10 Journal of Tropical Forest Science

11 Journal of Tropical Forest Science 4(4): Table 3. Summary of regression coefficients and statistics for allometric equations where height was significant (Footnote shows significance of height term; c = slope of height term; a = corrected coefficient of allometric equation Y= a D b H c ; all other symbols as in Table 2) Species a' b c S VK r 2 a Leaf area Eucalyptus camaldulensis Gliricidia sepium Leucaena diversifolia * *** ** Woody biomass Acacia auriculiformis Acacia mangium Eucalyptus camaldulensis Gliricidia sepium Leucaena diversifolia *** 1.089*** 0.896*** 0.798*** 1.063*** * p < 0.05, ** p < 0.01, *** p < Discussion Allometry

12 Journal of Tropical Forest Science4(4):

13 Journal of Tropical Forest Science 4(4):

14 Journal of Tropical Forest Science 4(4): THOMPSON, B.C