10 Carbon Stocks from Peat Swamp Forest and Oil Palm Plantation …
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Fig. 10.4 Distribution of tree density and aboveground C stock by 10 cm diameter classes in
Tanjung Harapan, Beguruh, and Pesalat forest sites in Tanjung Puting, Indonesia
Pesalat sites (primary forest) compared to Tanjung Harapan site (secondary forest).
Living trees with dbh >60 cm were present in primary forests (Pesalat and Beguruh)
while in the secondary forest, Tanjung Harapan, they were not present. The small
trees (dbh <20 cm) were also lower in abundance at Tanjung Harapan than Beguruh
and Pesalat sites (Fig. 10.4). The small trees comprised 76, 86, and 82% of the total
distribution of trees in Tanjung Harapan, Beguruh, and Pesalat, respectively. Overall,
Tanjung Harapan site differed from Pesalat and Beguruh sites, particularly in having
a lower density of small (dbh <20 cm) and large trees (dbh >60 cm).
We also found difference between secondary and primary forests in tree carbon
stock distribution among diameter classes (Fig. 10.4). Tree C stock in secondary
forest was mostly dominated by tree with dbh <40 cm, which comprised 68% of the