Age and tree spacing and their effects on energy properties of Ateleia glazioviana

作者：Eloy Elder^*; da Silva Dimas Agostinho; Caron Braulio Otomar; Elli Elvis Felipe; Schwerz Felipe

来源：Ciencia Rural, 2017, 47(9): e20160378.

DOI：10.1590/0103-8478cr20160378

• Timbo
• biomass
• gross calorific power
• energy productivity

The use of wood for energy purposes is common in Brazil, motivated mainly by the diversity of species that present a potential for energy production. The objective of this study was to determine the effects of tree age and spacing on the energy properties of different components of the biomass: wood, bark, and branch of the species Ateleia glazioviana Baill, distributed at different spacings: 2.0 x 1.0m, 2.0 x 1.5m, 3.0 x 1.0m, and 3.0 x 1.5m in the 1st, 3rd, and 5th year after the planting. The experiment was carried out in a randomized complete block design with three replications. The following variables were determined: biomass (BIO), gross calorific power (GCV), basic density (BD), energy productivity (EP), energy density (ED), fixed carbon content (FCC), volatile material content (VMC), and ash content (AC). Different tree ages significantly affected all analyzed variables, increasing the distribution of BIO, EP, AC, BD, and ED with no tendency to stabilize over time. The four tree spacings induced different levels of BIO and EP, with a trend toward lower values with increasing tree spacing for all assessed periods. The four components of the trees had a significant effect on the variables BIO, EP, GCV, FCC, VMC, and AC.

• 出版日期2017