The
paper presents new estimates of live biomass (phytomass) and net primary production
(NPP) of Russian forests for 1993 and 2003. These indicators are estimated
based on forest inventory data and a specially developed semi-empirical modeling
system. The latter contains regional
models of growth by major forest forming species, multi-dimensional models of
phytomass and models of biological production. It is shown that the fractional
structure of forest phytomass substantially differs from previous estimates
that indicated significant temporal trends of the share of aboveground wood
(AGW), green part (GP) and belowground (BG) phytomass. The total forest NPP (of
307 g C m-2yr-1 for 2003) is substantially higher than
previously reported. These changes may
be attributed to climatic change which was dramatic over the last four decades,
particularly in Asian Russia.
Author: A. Shvidenko, D. Shepashenko, S. Nilsson, and A. Lapenis (shvidenk at iiasa dot ac dot at)
Filesize: 41.29 Kb