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@ARTICLE{Reich:156294,
author = {Reich, P. B. and Luo, Y. and Bradford, J. B. and Poorter,
H. and Perry, C. H. and Oleksyn, J.},
title = {{T}emperature drives global patterns in forest biomass
distribution in leaves, stems, and roots},
journal = {Proceedings of the National Academy of Sciences of the
United States of America},
volume = {111},
number = {38},
issn = {1091-6490},
address = {Washington, DC},
publisher = {Academy},
reportid = {FZJ-2014-05085},
pages = {13721 - 13726},
year = {2014},
abstract = {Whether the fraction of total forest biomass distributed in
roots, stems, or leaves varies systematically across
geographic gradients remains unknown despite its importance
for understanding forest ecology and modeling global carbon
cycles. It has been hypothesized that plants should maintain
proportionally more biomass in the organ that acquires the
most limiting resource. Accordingly, we hypothesize greater
biomass distribution in roots and less in stems and foliage
in increasingly arid climates and in colder environments at
high latitudes. Such a strategy would increase uptake of
soil water in dry conditions and of soil nutrients in cold
soils, where they are at low supply and are less mobile. We
use a large global biomass dataset (>6,200 forests from 61
countries, across a 40 °C gradient in mean annual
temperature) to address these questions. Climate metrics
involving temperature were better predictors of biomass
partitioning than those involving moisture availability,
because, surprisingly, fractional distribution of biomass to
roots or foliage was unrelated to aridity. In contrast, in
increasingly cold climates, the proportion of total forest
biomass in roots was greater and in foliage was smaller for
both angiosperm and gymnosperm forests. These findings
support hypotheses about adaptive strategies of forest trees
to temperature and provide biogeographically explicit
relationships to improve ecosystem and earth system models.
They also will allow, for the first time to our knowledge,
representations of root carbon pools that consider
biogeographic differences, which are useful for quantifying
whole-ecosystem carbon stocks and cycles and for assessing
the impact of climate change on forest carbon dynamics.},
cin = {IBG-2},
ddc = {000},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {89582 - Plant Science (POF2-89582)},
pid = {G:(DE-HGF)POF2-89582},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000341988200026},
pubmed = {pmid:25225412},
doi = {10.1073/pnas.1216053111},
url = {https://juser.fz-juelich.de/record/156294},
}