Sustainability, Free Full-Text

Por um escritor misterioso

Descrição

Eucalyptus is the main fast-growing tree for biomass production in the tropics, providing resources for pulp and paper industries and bioenergy. The potential productivity of forest sites over an eight-year rotation in Brazil was evaluated by the Physiological Principles in Predicting Growth (3-PG) model for two soils, Acrisols and Arenosols, with high and low water storage, respectively, and distinct productive potential capacity. The model was parameterized by data-sets obtained in bimonthly forest inventories performed in stands with 33, 58 and 89 months-old trees, and edaphic surveys. The average volumetric productivity of wood and biomass of the main stem determined at the 89 months-old stand was 374 m3 ha−1 (177 Mg ha−1) for Acrisols and 272.3 m3 ha−1 (130.0 Mg ha−1) for Arenosols. The estimated volumetric production in the Arenosols had a high mean annual increment up to the age of 58 months, with a significant reduction in growth rates after this time. In Acrisols, high incremental rates in wood volume up to age of 89 months (MAIVW > 50 m3 ha−1 year−1) indicate that, under ideal soil conditions, the cutting cycle may exceed 8 years with no productivity impairment. The parameterized model matched well for forest yield (r2 > 0.9) and dendrometric variables (r2 > 0.78). The expected results of lower productivity in Arenosols occurred only after 58 months, while for Acrisols productivity remained high up to 89 months. The results showed the eucalyptus cycle should be shorter in Arenosols, since the lower cutting cycle can provide higher final productivity, when using the mean annual increment to evaluate productivity.
Sustainability, Free Full-Text
Environment and Behavior: Sage Journals
Sustainability, Free Full-Text
Sustainability, Free Full-Text
Sustainability, Free Full-Text
Free Tiruppur District Map - Colaboratory
Sustainability, Free Full-Text
Education - United Nations Sustainable Development
Sustainability, Free Full-Text
Editable Sustainability Poster Templates Online
Sustainability, Free Full-Text
Sustainability, Free Full-Text
Sustainability, Free Full-Text
Climate Resilience and Sustainability - Wiley Online Library
Sustainability, Free Full-Text
Sustainability Plan Template in PDF - FREE Download
Sustainability, Free Full-Text
Administrative Sciences Free Full-Text Redefining The Use, 49% OFF
de por adulto (o preço varia de acordo com o tamanho do grupo)