Species structure of the herbs layer aboveground phytomass of the association Trollio asiaticae - Populetum tremulae Dymina ex. Ermakov et. al. 2000
N. N. Lashchinskiy1,2, E. B. Talovskaya1,2, A. A. Guseva1,2
1Central Siberian Botanical Garden of SB RAS, Novosibirsk, Russia
2Novosibirsk State University, Novosibirsk, Russia
Keywords: small-leaves forests, phytomass, species structure, productivityy
Abstract
Herbs layer aboveground phytomass of the association Trollio asiaticae - Populetum tremulae (absolutely dry weight) and its species structure was determined. It was found that from 37 collected species two dominant species made 80 % of total phytomass. Moreover, only five species have more than 1 % of total phytomass each and the rest of species cover only 6,7 %. Comparison with published data about phytomass of the different layers and fractions of plant communities showed that phytomass of the herbs layer is equal or even more than photosynthetically active phytomass of the tree layer. So, in this ecosystem there are two equal layers of photosynthetic activity - herbs layer and tree layer.
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