3 documents found, page 1 of 1
Soybean Expansion in Brazil’s New Agricultural Frontier: Barter, Production Cos...
Brito, T.; Fragoso, Rui; Santos, L.; Silva, A. A. F.; Justino, G.; Lima, J. R. D. S.; Aranha, J.Despite the global relevance of soybean production and Brazil’s leadership in this sector, most studies have focused on established producing regions such as south-central Brazil, while little attention has been given to new frontiers. In particular, the role of barter, costs, price volatility, and local socio-economic aspects remain underexplored. Therefore, this study analyses production costs, market volatil...
A simplified methodology for the correction of Leaf Area Index (LAI) measuremen...
Lopes, D.; Nunes, L; Walford, N; Aranha, J.; Sette, CJ; Viana, H.; Hernandez, CForest leaf area index (LAI) is an important structural parameter controlling many biological and physiological processes associated with vegetation. A wide array of methods for its estimation has been proposed, including those based on the sunfleck ceptometer, a ground-based easy-to-use device taking non-deForest leaf area index (LAI) is an important structural parameter controlling many biological and physiol...
Assessment of forest biomass for use as energy. GIS-based analysis of geographi...
Viana, H.; Cohen, Warren B.; Lopes, D.; Aranha, J.Following the European Union strategy concerning renewable energy (RE), Portugal established in their national policy programmes that the production of electrical energy from RE should reach 45% of the total supply by 2010. Since Portugal has large forest biomass resources, a significant part of this energy will be obtained from this source. In addition to the two existing electric power plants, with 22 MW of p...