NDLI: Temporal change in carbon stocks of cocoa–gliricidia agroforests in Central Sulawesi, Indonesia

Content Provider	Springer Nature Link
Author	Smiley, G. L. Kroschel, J.
Copyright Year	2008
Abstract	In a false-time series, the temporal development of cocoa–gliricidia carbon (C) stocks and soil organic carbon (SOC) were investigated in Napu and Palolo Valleys of Central Sulawesi, Indonesia. As a first step, the Functional Branch Analysis (FBA) method was used to develop allometric equations for the above- and below-ground growth of cocoa and gliricidia. FBA resulted in shoot–root ratios of 2.54 and 2.05 for cocoa and gliricidia, respectively. In Napu and Palolo, the trunk diameter and carbon levels per gliricidia tree were always much greater than that of cocoa. The highest aerial carbon levels were attained at year four in Napu (aerial cocoa–gliricidia = 20,745.2 kg C ha−1) and at year five in Palolo (aerial cocoa–gliricidia = 38,857.0 kg C ha−1). After years four or five, however, the reduced stocking density of gliricidia attributed to a loss of aerial C. During the time spans in question, SOC remained fairly stable though slightly decreasing in Napu and slightly increasing in Palolo. The SOC harbored a vastly greater amount of system C (one-half and one-third of SOC in the 0–15 cm stratum in Napu and Palolo, respectively) relative to tree components. Eight years (Napu) or 15 years (Palolo) after conversion of a rainforest to cocoa–gliricidia agroforestry caused an 88% and 87% reduction of aerial C-stocks in Napu and Palolo, respectively.
Starting Page	219
Ending Page	231
Page Count	13
File Format	PDF
ISSN	01674366
Journal	Agroforestry Systems
Volume Number	73
Issue Number	3
e-ISSN	15729680
Language	English
Publisher	Springer Netherlands
Publisher Date	2008-05-13
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Export crops Theobroma cacao Gliricidia sepium Forest conversion Carbon sequestration Global climate change Agriculture Forestry
Content Type	Text
Resource Type	Article
Subject	Forestry Agronomy and Crop Science

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