非表示:
キーワード:
forest management, forest inventory, carbon stocks, uncertainty
要旨:
For carbon (C) trading or any other verifiable C reports, it would be reasonable to identify
and quantify continuous changes in carbon stocks at regional scales without high investments
into additional C-specific, time- and labor-intensive inventories. Our study demonstrates the
potential of using routine stand taxation data from large scale forestry inventories for verifiable
quantification of tree biomass C stocks, C stock change rates, and associated uncertainties.
Empirical models, parameters, and equations of uncertainty propagation have been assembled
and applied to data from a forest management unit in Central Germany (550 000 ha), using
stand taxation inventories collected between 1993 and 2006. The study showed: 1) The use
of stand taxation data resulted in a verifiable and sufficiently precise (cv = 7%) quantification
of tree biomass carbon stocks and their changes at the level of growth-regions (1700 to
140 000 ha). 2) The forest of the test region accumulated carbon in tree biomass at a mean
annual rate of 1.8 (–0.9 to 4.5) tC/ha/yr over the studied period. 3) The taxation inventory data
can reveal spatial patterns of rates of C stock changes, specifically low rates of 0.4 tC/ha/yr
in the northwest and high rates of 3.0 tC/ha/yr in the south of the study region.
