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Fig. 1.28 The diagram of the carbon
fl
fluxes in the system atmosphere-plant-soil with the grass and
forest ecosystems as an example
Fig. 1.29 The scheme of the
global carbon cycle by
Watson et al. (2000).
Designations: GPP gross
primary productivity, NPP net
primary productivity, NEP net
ecosystem productivity, NBP
net biome productivity
formations and accuracy of the parameterization of the biocenotic processes. In this
regard the world maps of vegetation and soils have been drawn, their areas esti-
mated, and data on the vital functions of soil microorganisms have been accumu-
lated, and technologies of an operational monitoring of landscapes have been
worked out. Unfortunately, there are no reliable enough estimates of the limits for
considering details of the soil-plant formations, which would provide the needed
accuracy of the carbon
fluxes estimation. To solve this problem, a global model of
carbon cycle is needed which would re
fl
ect a hierarchy of important, by their expert
estimates, constituents of the biosphere and the processes of carbon transformation.
An exemplary scheme of carbon
fl
flux in this model is characterized in Fig. 1.30 .
Numerical experiments with this model will make it possible to obtain comparative
assessments of the consequences of complicating its various constituents and
thereby to approach sequentially the level of an optimal spatial quantization.
fl
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