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Carbon Storage on Landscapes with Stand-replacing Fires
DANIEL M. KASHIAN, WILLIAM H. ROMME, DANIEL B. TINKER, MONICA G. TURNER and MICHAEL G. RYAN
Vol. 56, No. 7 (July 2006), pp. 598-606
Stable URL: http://www.jstor.org/stable/10.1641/0006-3568(2006)56[598:csolws]2.0.co;2
Page Count: 9
You can always find the topics here!Topics: Carbon sequestration, Coniferous forests, Forest regeneration, Global carbon budget, Carbon cycle, Boreal forests, Forest ecosystems, Dead wood, Landscapes, Climate change
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AbstractMany conifer forests experience stand-replacing wildfires, and these fires and subsequent recovery can change the amount of carbon released to the atmosphere because conifer forests contain large carbon stores. Stand-replacing fires switch ecosystems to being a net source of carbon as decomposition exceeds photosynthesis—a short-term effect (years to decades) that may be important over the next century if fire frequency increases. Over the long term (many centuries), net carbon storage through a fire cycle is zero if stands replace themselves. Therefore, equilibrium response of landscape carbon storage to changes in fire frequency will depend on how stand age distribution changes, on the carbon storage of different stand ages, and on postfire regeneration. In a case study of Yellowstone National Park, equilibrium values of landscape carbon storage were resistant to large changes in fire frequency because these forests regenerate quickly, the current fire interval is very long, the most rapid changes in carbon storage occur in the first century, and carbon storage is similar for stands of different ages. The conversion of forest to meadow or to sparser forest can have a large impact on landscape carbon storage, and this process is likely to be important for many conifer forests.
BioScience © 2006 American Institute of Biological Sciences