F. Lagergren, Lars Eklundh, Achim Grelle, Mattias Lundblad, Meelis Mölder, Harry Lankreijer, Anders Lindroth,
ABSTRACT Simple light use efficiency ( ɛ ) models of net primary production (NPP) have recently been given great attention (NPP = ɛ × absorbed photosynthetically active radiation). The underlying relationships have, however, not been much studied on a time step less than a month. In this study daily NPP was estimated as the sum of net ecosystem exchange (NEE) and heterotrophic respiration ( R h ) of a mixed pine and spruce forest in Sweden. NEE was measured by eddy correlation technique and R h was estimated from ...
Tópico(s): Remote Sensing in Agriculture
2004 - Wiley | Plant Cell & Environment