Title Page
Abstract
국문 요약
Contents
1. Introduction 14
2. Materials and Methods 16
2.1. Study sites 16
2.2. Field data collection and estimation of carbon stocks 18
2.3. soil analyses 20
2.4. Statistical analysis 20
3. Results 21
3.1. Biomass carbon 21
3.2. Forest floor carbon 23
3.3. Topsoil carbon 24
3.4. Total carbon stocks 25
3.5. Soil chemistry and PCA 28
4. Discussion 32
4.1. Biomass carbon stocks 32
4.2. Forest floor carbon stocks 33
4.3. Topsoil carbon stocks 33
4.3. Relation between trees and soils 34
5. Conclusions 36
6. References 37
Table 1. Mean and standard error (± S.E.) values of stand density, basal area, and biomass by forest types. Total values with different letters are statistically different among forest types (Kruskal-Wallis with Scheffe post hoc 〈 0.05). MDF = mixed dipterocarp forests; PSF = peat swamp... 22
Table 2. Mean and standard error (± S.E.) values of dry mass, carbon concentration and carbon stock in forest floor by forest types. Mean values with the same letters are not... 23
Table 3. Bulk density, carbon concentration, and the total carbon stocks in 0-30 cm soil layer (mean ± standard error). Mean values with different letters indicate statistical... 24
Table 4. Mean and standard error (± S.E.) values of soil properties determined in each forest type. Mean values with different letters are statistically different among forest... 29
Table 5. Loading of the soil properties that determine the first two axes of the PCA. 31
Figure 1. The study sites located in Brunei Darussalam, northwestern Borneo. The colored mark of the study sites by forest types (A) Andulau Forest Reserve, (B) Bukit... 17
Figure 2. Mean carbon stocks in total pool (a), biomass (b), forest floor (c), and soil (d). The letters above the bars indicate statistical differences among forest types at the... 26
Figure 3. Linear regression between biomass and soil carbon stocks. Green circles = plots in mixed dipterocarp forests (n = 18), blue circles = peat swamp forests (n = 13),... 27
Figure 4. Principal component analysis of soil properties among forest types. STC = soil total carbon stocks. 30