Variations in productivity and wood properties of Amazonian tachi-branco trees planted at diff erent spacings for bioenergy purposes  

作　　者：Marilene Olga dos Santos Silva Marcela Gomes da Silva Lina Bufalino Maíra Reis de Assis Delman de Almeida Goncalves Paulo Fernando Trugilho Thiago de Paula Protásio 

机构地区：[1]Rural Federal University of Amazonia/UFRA,Perimetral Ave.,Terra Firme,Belém,PA 66077-830,Brazil [2]Federal University of Lavras/UFLA,Francisco Sales St.,Centro,Lavras,MG 37200-000,Brazil [3]Brazilian Agricultural Research Corporation/Eastern Amazonia Embrapa,Dr.Enéas Pinheiro BySt.,Marco,Belém,PA 66095-903,Brazil [4]Rural Federal University of Amazonia/UFRA,PA-275 Rd.,Zona Rural,Parauapebas,PA 68515-000,Brazil

出　　处：《Journal of Forestry Research》2021年第1期211-224,共14页林业研究（英文版）

基　　金：Agricultural Research Corporation of Amapá(EMBRAPA-Eastern Amazonia Unit),Amazonia Bank(BASA),Coordination for the Improvement of Higher Level Personnel(CAPES);the National Council for Scientifi c and Technological Development(CNPq),and Jari Celulose S.A.Company.

摘　　要：Marilene Olga dos Santos Silva 1·Marcela Gomes da Silva 1·LTachi-branco(Tachigali vulgaris,L.F.Gomes da Silva&H.C.Lima)is a leguminous tree species native to the Amazon rainforest that has drawn attention for its remarkably fast growth,a required trait for biomass/bioenergy plantations.In evaluations of biomass production and wood properties of T.vulgaris planted in homogeneous plantations at diff erent spacings in the Amazonian state of Pará,Brazil,biomass of 7-year-old trees was quantifi ed for individual trees and the entire population.Wood was also sampled to assess properties relevant to bioenergy applications.The choice for spacing dimension for planting nonclonal T.vulgaris should consider whether the priority is greater productivity per tree,achieved with greater spacings(9.0 m 2 and 12.0 m 2),or productivity per area,achieved with closerina Bufalino 1·Maíra Reis de Assis 2·Delman de Almeida Goncalves 3·Paulo Fernando Trugilho 2·Thiago de Paula Protásio 4 spacings(6.0 m 2 and 7.5 m 2).Genetic variability of the T.vulgaris seed stand and/or high heritability of wood traits overcame the eff ect of diff erent spacing on all morphological,physical,chemical and energetic properties of T.vulgaris wood.This species has moderate basic density when cultivated at spacings larger than 6 m 2 and net heating value above 7.95 MJ/kg,which is suitable for bioenergy purposes.The high variation in wood properties within tree spacing is strongly indicative of great potential for genetic breeding.The fast growth and the suitable moderate wood basic density confi rm the outstanding potential of homogeneous plantations of T.vulgaris for providing wood for bioenergy.

关 键 词：Basic density Heating value Planting density Tachigali vulgaris 

分 类 号：S781[农业科学—木材科学与技术]