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The likely impact of elevated [CO2], nitrogen deposition, increased temperature and management on carbon sequestration in temperate and boreal forest ecosystems: a literature review


Hyvönen, Riitta; Ågren, Göran I.; Linder, Sune; Persson, Tryggve; Cotrufo, M. Francesca; Ekblad, Alf; Freeman, Michael; Grelle, Achim; Janssens, Ivan A.; Jarvis, Paul G.; Kellomäki, Seppo; Lindroth, Anders; Loustau, Denis; Lundmark, Tomas; Norby, Richard J.; Oren, Ram; Pilegaard, Kim; Ryan, Michael G.; Sigurdsson, Bjarni D.; Strömgren, Monika; van Oijen, Marcel; Wallin, Göran. 2007. The likely impact of elevated [CO2], nitrogen deposition, increased temperature and management on carbon sequestration in temperate and boreal forest ecosystems: a literature review. New Phytologist. 173(3): 463-480.

Temperate and boreal forest ecosystems contain a large part of the carbon stored on land, in the form of both biomass and soil organic matter. Increasing atmospheric [CO2], increasing temperature, elevated nitrogen deposition and intensified management will change this C store. Well documented single-factor responses of net primary production are: higher photosynthetic rate (the main [CO2] response); increasing length of growing season (the main temperature response); and higher leaf-area index (the main N deposition and partly [CO2] response). Soil organic matter will increase with increasing litter input, although priming may decrease the soil C stock initially, but litter quality effects should be minimal (response to [CO2], N deposition, and temperature); will decrease because of increasing temperature; and will increase because of retardation of decomposition with N deposition, although the rate of decomposition of high-quality litter can be increased and that of low-quality litter decreased. Single-factor responses can be misleading because of interactions between factors, in particular those between N and other factors, and indirect effects such as increased N availability from temperature-induced decomposition. In the long term the strength of feedbacks, for example the increasing demand for N from increased growth, will dominate over short-term responses to single factors. However, management has considerable potential for controlling the C store.

Keywords: forest ecosystems, carbon sequestration, CO2


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Title: RMRS Other Publications: The likely impact of elevated [CO2], nitrogen deposition, increased temperature and management on carbon sequestration in temperate and boreal forest ecosystems: a literature review
Electronic Publish Date: March 30, 2007
Last Update:
March 30, 2007

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