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- Title
Carbon sequestration potential of five tree species in a 25-year-old temperate tree-based intercropping system in southern Ontario, Canada.
- Authors
Wotherspoon, Amy; Thevathasan, Naresh; Gordon, Andrew; Voroney, R.
- Abstract
Carbon (C) sequestration potential was quantified for five tree species, commonly used in tree-based intercropping (TBI) and for conventional agricultural systems in southern Ontario, Canada. In the 25-year-old TBI system, hybrid poplar ( Populus deltoides × Populus nigra clone DN-177), Norway spruce ( Picae abies), red oak ( Quercus rubra), black walnut ( Juglans nigra), and white cedar ( Thuja occidentalis) were intercropped with soybean ( Glycine max). In the conventional agricultural system, soybean was grown as a sole crop. Above- and belowground tree C Content, soil organic C, soil respiration, litterfall and litter decomposition were quantified for each tree species in each system. Total C pools for hybrid poplar, white cedar, red oak, black walnut, Norway spruce and a soybean sole-cropping system were 113.4, 99.4, 99.2, 91.5, 91.3, and 71.1 t C ha, respectively at a tree density of 111 trees ha, including mean tree C content and soil organic C stocks. Net C flux for hybrid poplar, white cedar, red oak, black walnut, Norway spruce and soybean sole-crop were 2.1, 1.4, 0.8, 1.8, 1.6 and −1.2 t C ha year, respectively. Results presented suggest greater atmospheric CO sequestration potential for all five tree species when compared to a conventional agricultural system.
- Subjects
ONTARIO; CARBON sequestration; PLANT species; INTERCROPPING; AGRICULTURE; SOYBEAN
- Publication
Agroforestry Systems, 2014, Vol 88, Issue 4, p631
- ISSN
0167-4366
- Publication type
Article
- DOI
10.1007/s10457-014-9719-0