ausblenden:
Schlagwörter:
-
Zusammenfassung:
DIFFERENT METHODS, DIFFERENT RESULTS.
The net ecosystem exchange (NEE) quantifies the net CO2 flux from the ecosystem to the
atmosphere
(Chapin et al. 2006); that is, a negative
NEE corresponds to a positive (net) sink of CO2 or
a positive (net) uptake of CO2 by the biosphere. Unfortunately,
it is not possible to directly measure how
much CO2 is taken up on continental scales. For this
reason, various different indirect approaches have
been developed which are sketched in Fig. 1 and outlined in the following.