作者: Gerhard Wieser
关键词: Herbaceous plant 、 Ecosystem respiration 、 Terrestrial biological carbon cycle 、 Woody plant 、 Primary production 、 Environmental science 、 Biomass (ecology) 、 Photosynthesis 、 Carbon cycle 、 Botany
摘要: Carbon compounds are the currency that plants accumulate, store, and use to build their structure maintain physiological processes (Waring Schlesinger 1985). Trees differ from other with respect carbon investments in productive tissues support structures. Most of biomass a tree is accumulated woody do not photosynthesize but foliage fine roots (Friend et al. 1994; Gower 1995). Costs for maintaining these supporting conducting high trees when compared dwarf shrubs herbaceous more favourable leaf mass ratio, i.e. dry matter leaves % total plant (Boysen-Jensen 1932; Ellenberg 1975; Stevens Fox 1991; Slatyer Noble 1992; Korner 1994, 2003a; Cairns 1998; Malanson 1998). Thus, beside gain, allocation might be equal importance determining upper limit (Bernoulli 1999). As both interact 1985), we briefly review cycle (Fig. 6.1). begins assimilates atmospheric CO2 through photosynthesis into reduced sugars. Canopy determined by net photosynthetic activity amount active surface area or integrated over selected daily seasonal time periods.