Soil attributes and biomass yield from Pinus caribaea var. Hondurensis

Abstract

Biomass yield from Pinus caribaea var. hondurensis is conditional on soil attributes. With the silvicultural practice currently being used in Brazil, Pinus stands might produce lower yields due to nutrient shift from harvest and due to changes in the edaphic environment from mechanization. Therefore, this study aims to evaluate chemical and physical soil attributes and determine which are correlated with higher biomass yields. Four commercial stands were selected, with differing growth patterns, each having four trees selected from the dominant layer, in addition to soil samples for chemical and physical analyses. Soil attributes and biomass yield data were submitted to analysis of variance (ANOVA), means were compared by the Tukey test, and the Pearson correlation coeffi cient was determined. Chemical attributes directly or indirectly associated with the sum of bases and physical attributes associated with water availability were found to be related to biomass yield.Key words: Nutrition, growth, silviculture, fertility, soil physics. AT RIBUTOS DO SOLO E PRODUÇÃO DE BIOMASSA DE

BIOMASS AND NUTRIENTS REMOVAL IN PURE AND MIXED POPULATIONS OF Pinus sp. IN SOUTHWEST BAHIA - BRAZIL

“…Moreover, the biomass distribution pattern in the different compartments of the trees (stem> bark> branches> needles) (Table 3) is similar to that observed by Lima et al (2016) and Corrêa and Bellote (2011) in stands of Pinus caribaea in the states of Bahia and São Paulo (Brazil), respectively. In contrast, Sixel et al (2015), for plantings of Pinus taeda with 16 years of age, and Schumacher et al (2013), for Pinus taeda with 27 years of age, verified biomass distribution in the sequence: stem> branches> bark> needles.…”

“…The biomass results in Mg ha -1 observed in both plantations are lower than those found by Sette Júnior et al (2006) for Pinus taeda with 12 years of age in Santa Catarina State -Brazil (148 Mg.ha -1 ), and Corrêa and Bellote (2011) for Pinus caribaea with 11 years of age in the state of São Paulo -Brazil (264 Mg.ha -1 ). The lower biomass observed in the present study may be related to the adaptation of the species to the studied region, which 576 FLORESTA, Curitiba, PR, v. 49, n. 3, p. 571 -578, jul/set 2019Gomes, V. S. et.al.…”

“…In spite of the fact that several studies have been carried out on biomass and nutrient exports in homogenous stands of Pinus (VIERA et al, 2011;SIXEL et al, 2015;CORRÊA;BELLOTE, 2011;SCHUMACHER et al, 2013;LIMA et al, 2016), no records have been found in up-to-date literature on studies of mixed plantings of species of the same genus. Therefore, the objective of this study was to quantify the biomass and nutrients of the aerial part of trees and to evaluate the effect of harvest residues management on the removal of nutrients from pure and mixed plantations of Pinus sp..…”

Biomass and carbon stock from Pinus caribaea var. hondurensis under homogenous stands in southwest Bahia, Brazil

“…Various biomass and carbon assessment studies were performed in species of the genus Pinus, and above-ground tree biomass (57-299Mg ha -1 ) and carbon stock (26-136Mg ha -1 ) estimates were shown in different regions of Brazil (WATZLAWICK et al, 2005;BALBINOT et al, 2008;CORRÊA & BELLOTE, 2011;GIONGO et al, 2011;WATZLAWICK et al, 2013). Although there is a growing expansion in the areas planted with this genus, information about its production potential is still incipient, and no study related to the subject was reported until now in the Northeast region of Brazil, especially in the State of Bahia.…”