NDLI: Land-use conversion effects on CO$_{2 }$emissions: from agricultural to hybrid poplar plantation

Content Provider	Springer Nature Link
Author	Saurette, D. D. Chang, S. X. Thomas, B. R.
Copyright Year	2007
Abstract	Land-use changes such as deforestation have been considered one of the main contributors to increased greenhouse gas emissions, while verifiable C sequestration through afforestation projects is eligible to receive C credits under the Kyoto Protocol. We studied the short-term effects on CO$_{2}$ emissions of converting agricultural land-use (planted to barley) to a hybrid poplar (Populus deltoids × Populus × petrowskyana var. Walker) plantation in the Parkland region in northern Alberta, where large areas are being planted to hybrid poplars. CO$_{2}$ emissions were measured using a static gas chamber method. No differences were found in soil temperature, volumetric moisture content, or soil respiration rates between the barley and Walker plots. The mean soil respiration rate in 2005 was 1.83 ± 0.19 (mean ± 1 SE) and 1.89 ± 0.13 μmol CO$_{2}$ m$^{−2}$ s$^{−1}$ in the barley and Walker plots, respectively. However, biomass production was higher in the barley plots, indicating that the agricultural land-use system had a greater ability to fix atmospheric CO$_{2}$. The C balance in the land-use systems were estimated to be a small net gain (before considering straw and grain removal through harvesting) of 0.03 ± 0.187 Mg C ha$^{−1}$ year$^{−1}$ in the barley plots and a net loss of 3.35 ± 0.080 Mg C ha$^{−1}$ year$^{−1}$ from the Walker poplar plots. Over the long-term, we expect the hybrid poplar plantation to become a net C sink as the trees grow bigger and net primary productivity increases.
Starting Page	623
Ending Page	633
Page Count	11
File Format	PDF
ISSN	09123814
Journal	Ecological Research
Volume Number	23
Issue Number	3
e-ISSN	14401703
Language	English
Publisher	Springer Japan
Publisher Date	2007-09-22
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Carbon dioxide Hybrid poplar Soil carbon Greenhouse gas emission Land-use Forestry Behavioural Sciences Evolutionary Biology Zoology Plant Sciences Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

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