Abstract:
:Forests are dynamic in both structure and species composition, and these dynamics are strongly influenced by climate. However, the net effects of future tree species composition on net primary production (NPP) are not well understood. The objective of this work was to model the potential range shifts of tree species (DISTRIB Model) and predict their impacts on NPP (PnET-II Model) that will be associated with alterations in species composition. We selected four 200 x 200 km areas in Wisconsin, Maine, Arkansas, and the Ohio-West Virginia area, representing focal areas of potential species range shifts. PnET-II model simulations were carried out assuming that all forests achieved steady state, of which the species compositions were predicted by DISTRIB model with no migration limitation. The total NPP under the current climate ranged from 552 to 908 g C/m(2) per year. The effects of potential species redistributions on NPP were moderate (-12% to +8%) compared with the influence of future climatic changes (-60% to +25%). The direction and magnitude of climate change effects on NPP were largely dependent on the degree of warming and water balance. Thus, the magnitude of future climate change can affect the feedback system between the atmosphere and biosphere.
journal_name
J Integr Plant Bioljournal_title
Journal of integrative plant biologyauthors
Chiang JM,Iverson LR,Prasad A,Brown KJdoi
10.1111/j.1744-7909.2008.00749.xsubject
Has Abstractpub_date
2008-11-01 00:00:00pages
1426-39issue
11eissn
1672-9072issn
1744-7909pii
JIPB749journal_volume
50pub_type
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