Above- and belowground carbon stocks of two organic, agroforestry-based oil palm production systems in eastern Amazonia

作者：Nascimento Ramos Helen Monique; Vasconcelos Steel Silva^*; Kato Osvaldo Ryohei; Castellani Debora Cristina

来源：Agroforestry Systems, 2018, 92(2): 221-237.

DOI：10.1007/s10457-017-0131-4

• Aboveground biomass
• Ecosystem carbon stock
• Elaeis guineensis
• Litter
• Roots
• Soil carbon

Ecosystem-level assessments of carbon (C) stocks of agroforestry systems are scarce. We quantified the ecosystem-level C stocks of one agroforestry-based oil palm production system (AFS(P)) and one agroforestry-based oil palm and cacao production system (AFS(P+C)) in eastern Amazonia. We quantified the stocks of C in four pools: aboveground live biomass, litter, roots, and soil. We evaluated the distribution of litter, roots, and soil C stocks in the oil palm management zones and in the area planted with cacao and other agroforestry species. The ecosystem-C stock was higher in AFS(P+C) (116.7 +/- 1.5 Mg C ha(-1)) than in AFS(P) (99.1 +/- 3.1 Mg C ha(-1)). The total litter-C stock was higher in AFS(P+C) (3.27 +/- 0.01 Mg C ha(-1)) than in AFS(P) (2.26 +/- 0.06 Mg C ha(-1)). Total root and soil C stocks (0-30 cm) did not differ between agroforestry systems. Ecosystem-C stocks varied between agroforestry systems due to differences in both aboveground and belowground stocks. In general, the belowground-C stocks varied spatially in response to the management in the oil palm and non-oil palm strips; these results have important implications for the monitoring of ecosystem-level C dynamics and the refinement of soil management.

• 出版日期2018-4