Effect of age and disturbance on decadal changes in carbon stocks in managed forest landscapes in central Canada

Michael Ter-Mikaelian (), Stephen Colombo and Jiaxin Chen

Mitigation and Adaptation Strategies for Global Change, 2014, vol. 19, issue 7, 1063-1075

Abstract: Forests have the potential to be a sink in the global carbon (C) budget and thus play an important role in mitigating climate change. However, large-scale management of forests to their sink potential requires understanding of factors responsible for changes in forest C stocks. In this paper, we quantify the effects of initial forest landscape condition and disturbance rates on landscape-level changes in forest C stocks using predictions for managed forests in Ontario, Canada. Ten-year changes in C stocks in public forests managed for wood fibre production were simulated under four scenarios reflecting the range of volume harvested between 1998 and 2007. Changes in forest C stocks varied across Ontario and with harvest rate, resulting in the forest ranging from being a source of 0.767 tC ha -1 year −1 to a sink of 0.656 tC ha −1 year −1 . Simulation results were used to develop a predictive equation explaining over 93 % of the variation in forest C stocks. Variables included in the equation, in descending order of their effect on changes in forest C stocks, were relative harvest rate, forest growth rate, natural disturbance rate, and initial forest C stocks. A reduced equation, including only the first three variables, explained nearly 89 % of the variation in forest C stocks. The results indicate that short-term changes in C stocks depend on initial forest condition and that there are limits to how much these changes can be manipulated by altering harvest and disturbance rates. Copyright Springer Science+Business Media Dordrecht 2014

Keywords: Forest carbon; Forest age; Forest growth; Forest harvest; Carbon sink (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1007/s11027-013-9460-4

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