Impacts of Climate Change on the Tree Line
Open Access
- 1 October 2002
- journal article
- review article
- Published by Oxford University Press (OUP) in Annals of Botany
- Vol. 90 (4), 537-544
- https://doi.org/10.1093/aob/mcf222
Abstract
The possible effects of climate change on the advance of the tree line are considered. As temperature, elevated CO2 and nitrogen deposition co‐vary, it is impossible to disentangle their impacts without performing experiments. However, it does seem very unlikely that photosynthesis per se and, by implication, factors that directly influence photosynthesis, such as elevated CO2, will be as important as those factors which influence the capacity of the tree to use the products of photosynthesis, such as temperature. Moreover, temperature limits growth more severely than it limits photosynthesis over the temperature range 5–20 °C. If it is assumed that growth and reproduction are controlled by temperature, a rapid advance of the tree line would be predicted. Indeed, some authors have provided photographic evidence and remotely sensed data that suggest this is, in fact, occurring. In regions inhabited by grazing animals, the advance of the tree line will be curtailed, although growth of trees below the tree line will of course increase substantially.Keywords
This publication has 8 references indexed in Scilit:
- A large carbon sink in the woody biomass of Northern forestsProceedings of the National Academy of Sciences of the United States of America, 2001
- Increasing shrub abundance in the ArcticNature, 2001
- 20th Century Climate Warming and Tree-limit Rise in the Southern Scandes of SwedenAMBIO, 2001
- Offset of the potential carbon sink from boreal forestation by decreases in surface albedoNature, 2000
- [Utilization of a biogeochemical model in dendroecology. Application to the Cembro pine].2000
- Deposition of fixed atmospheric nitrogen and foliar nitrogen content of bryophytes and Calluna vulgaris (L.) HullEnvironmental Pollution, 1995
- Climate effects on mountain plantsNature, 1994
- Rapid Changes in the Range Limits of Scots Pine 4000 Years AgoScience, 1991