Ecological parameters sought (fwd)

• To: forest@nic.funet.fi
• Subject: Ecological parameters sought (fwd)
• From: "Jarmo Saarikko (METLA)" <saarikko@metla.fi>
• Date: Mon, 12 Dec 1994 13:20:21 +0200 (EET)
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---------- Forwarded message ----------
Date: Fri, 09 Dec 1994 15:28:10 +0100
From: J.Kaduk <kaduk@DKRZ.D400.DE>
To: Multiple recipients of list ECOSYS-L <ECOSYS-L%DEARN@FINHUTC.hut.fi>
Subject: Ecological parameters sought

Dear listmember!

I'm looking for sources of vegetation related ecological data for
parametrization of the global biosphere carbon cycle model I'm working on.
Any hint is appreciated. I know that the wishlist is long but it would be
nice to get some directions. 'hope I don't offend anybody by my layman
terminology, which might be somewhat unconsistent with scientific language in
forestry.
I use a rather coarse classification of the terrestrial vegetation in 17
Biomes, appended below, which emerges from the BIOME 1 model of Prentice et al.
(1992).
More specifically I looking for following parameters for potential mature
vegetation:
- mean stand age, by which I understand the mean age of all (dominant) plants
    in a mature stand
- wood turnover time, as a measure of how much woody litter is produced per
    year as fraction of woody standing crop
- light extinction coefficients -if I describe the light extinction in the
    canopy by Beer's law ( exp(-k*L(z)), L(z) being cumulative leaf area index)
    what extinction coefficients k should I assume and how much is really
    absorbed by the leaves and how much by other plant parts?
- parameters for allometric relations: biomass-> DBH, DBH->stand height,
    preferably again such that I end up with the mean stand height...

For testing the model I'm mainly interested in GPP, maintenance and growth
respirarion, NPP, living biomass, litter and soil carbon data -annual and
also daily data.
Finally is there a source for the Woodlands data set of the IBP or the data
by MGR Cannell in some digital form?

Vegetation classification/biomes:
>  1 Tropical Dry forest/Savana
>  2 Tropical Seasonal forest
>  3 Tropical Rain forest
>  4 Xerophytic Woods/Shrub
>  5 Hot Desert
>  6 Warm Gras/Shrub
>  7 Broad-leaved Evergreen/Mixed forest
>  8 Temperate Deciduous forest
>  9 Cool Mixed forest
> 10 Cold Mixed forest
> 11 Cool Coniferous forest
> 12 Cool Gras/Shrub
> 13 Cold Deciduous forest
> 14 Boreal Forest
> 15 Tundra
> 16 Semidesert
> 17 Ice/Polar Desert

Thanks very much for your time!

Sincerely
  Joerg Kaduk                                                             *
                                                                         ***
         MPI for Meteorology                      kaduk@dkrz.d400.de    *****
         Bundesstr. 55                            Phone + 40 41173 282   ***
 D-20146 Hamburg                                  Fax   + 40 41173 298    #
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