Kohlenstoffökologische Effekte der Überführung von Primärwald in Wirtschaftswald : Eine Fallstudie für Nothofagus pumilio-Primärwälder Feuerlands

Weihenstephan

2003

57 Lit. Ang.

Artikel aus einer Zeitschrift

200107050

The paper presents the impact of the conversion of a primeval forest on Nothofagus pumilio (Lenga) in the Argentinean part of Tierra del Fuego into a managed forest on the carbon budget. For the evaluation of the carbon stocks data on stand and soil were collected by inventory of sample plots. The above- and below-ground biomass was estimated by regression functions derived from the biomass analyses of trees. A model approach was used for the simulation of the effects of the conversion on the different compartments. The total carbon stock in the primeval forest was 304 t C/ha. The highest proportion (203 t C/ha) was found in living dendromass. Coarse woody debris contributed 34 t C/ha (11 %) to the total budget, whereas the share of ground vegetation (0,4 t C/ha) was negligible. Soil carbon was low with 66 t C/ha caused by the shallow sites in the research area. The simulatin over a period of 190 years showed that the conversion into managed forests would lead to a significant emission of carbon which would last for several decades. This is even true when the accumulating positive effects of avoided emissions from fossil energy, through the use of wood, are considered.