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Biomass equations for Brazilian semiarid caatinga plants Acta Botanica
Sampaio,Everardo V.S.B.; Silva,Grécia C..
Allometric equations to estimate total aboveground alive biomass (B) or crown projection area (C) of ten caatinga species based on plant height (H) and/or stem diameter at ground level (DGL) or at breast height (DBH) were developed. Thirty plants of each species, covering the common range of stem diameters (3 to 50 cm), were measured (C, H, DGL, DBH), cut at the base, separated into parts, weighted and subsampled to determine dry biomass. Wood density (p) of the stem and the largest branches was determined. B, C, H and p ranged from 1 to 500 kg, 0.2 to 112 m², 1.3 to 11.8 m, and 0.45 to 1.03 g cm-3. Biomass of all 10 species, separately or together (excluding one cactus species), could be estimated with high coefficients of determination (R²) using the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Stem diameter; Height; Crown area; Wood density.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062005000400028
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Management strategies of Eremanthus erythropappus (DC.) MacLeish under different initial spacing Ciência e Agrotecnologia
Scolforo,José Roberto Soares; Altoe,Thiza Falqueto; Scolforo,Henrique Ferraco; Mello,Jose Marcio de; Silva,Charles Plinio Castro e; Ferraz Filho,Antonio Carlos.
ABSTRACT Eremanthus erythropappus, commonly known as candeia, is an income-generating tree native to Brazil. This is due to the high durability of its wood and its essential oil containing the active component alpha bisabolol. Despite this economic potential, until the early 2000's no studies existed to explore the sustainable management in areas in which the species naturally occurs or for establishing commercial plantations. This study proposes new management strategies based on an individual tree model, and evaluates the growth behavior of candeia trees planted in different spacing. The experiment was installed in March 2002, in Carrancas municipality, Minas Gerais state, Brazil. The experimental area was divided into 4 blocks with 4 different spacings...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Crown area; Stand density; Monomolecular model; Individual tree model.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000300298
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