Title:
Nutrient Exportations in Very-Short Rotation Coppice of Poplar
Author(s):
Berthelot, A., Maine, P., Preudhomme, M., Gauvin, J., Ranger, J.
Document(s):
Paper
Abstract:
The production of above-ground biomass (leaves aside) was studied for six very-short rotation coppice stands (VSRC) of 1 or 2 year-old poplars planted on various sites. The number of stumps by hectare ranged from 5600 to 13330, the number of stems by stump from 1 (first rotation) to 16 (depending on rotations) and the -1 -1 production of biomass from 0,9 to 10 dt.ha.y . Wood chips coming from the harvested biomass were analysed to estimate the nutrient content of the major elements N, P, K, Ca and Mg. Data on amount of nutrient stocked by the biomass were compared to data from the literature obtained with short-rotation coppices with lower stand densities (2000 to 3000 stems ha-1) and higher rotation length (7 to 10 years old). The relationship between annual biomass -1 -1 production (dt.ha.y ) and annual nutrient uptake (N, P, K, Ca and Mg) stocked in the harvested biomass shows clearly that for an equivalent production, the age of the trees has a strong influence on the nutrients use efficiency. These results can be used to estimate the amount of fertilization required after each harvest according to the biomass production of the stand and the age of the stems.
Keywords:
biomass, environmental impact, fertilization, poplar, short rotation forestry (SRF)
Topic:
Policies and ensuring sustainability
Subtopic:
Agro-environmental assessment of biomass production
Event:
18th European Biomass Conference and Exhibition
Session:
VP5.3.4
Pages:
2265 - 2268
ISBN-13:
978-88-89407-56-1
ISBN-10:
88-89407-56-5
Paper DOI:
10.5071/18thEUBCE2010-VP5.3.4
Price:
FREE
