This study based on woody biomass was conducted under an experimental design of randomized complete blocks with two species, Eucalyptus saligna and Eucalyptus tereticornis, in three planting densities, 5000 trees ha⁻¹, 10 000 trees ha⁻¹, and 20 000 trees ha⁻¹. Data were collected at 3, 12, and 24 months and growing relationships were analyzed. Adobe ground biomass, soil carbon reserve, plant issue nutrients, and woody biomass were determined. Results showed statistically significant differences between species in biomass production, obtaining values from 36.80 to 117.42 Mg ha⁻¹ in E. tereticornis and 36.10 to 107.67 Mg ha⁻¹ in E. saligna. Optimum planting density for both species proved to be 10 000 trees ha⁻¹, which showed better biomass accumulation and growth performance in addition to lower mortality, and less impact on productivity. Regarding soil nutrition, it was determined that as crop density increased, the loss of nutrients (N, P, K, Ca) increased, with a loss of up to 33% in 24 months in the density of 20 000 trees ha⁻¹. For both species, the treatment of 10 000 trees ha⁻¹ provided the highest concentration of organic matter in the top 20 cm of soil. Finally, wood chemical aspects did not show differences in the properties with any treatment. © 2020 Society of Chemical Industry and John Wiley & Sons, Ltd.

中文翻译：

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种植密度和树种选择对森林生物能源系统的影响：树木生长，养分储存和木材化学性质

基于木质生物质这项研究有两个品种，完全随机块实验设计下进行柳叶桉和细叶桉，三个种植密度，5000棵公顷^-1，10种万株树木公顷^-1，以及20万棵树木哈^{- 1}。在第3、12和24个月收集数据，并分析增长的关系。确定了Adobe地面生物量，土壤碳储量，植物释放的养分和木质生物量。结果表明，生物量生产的物种之间具有统计学显着性差异，E。tereticornis中的值介于36.80至117.42 Mg ha ^-1之间，而E. tereticornis中的值介于36.10至107.67 Mg ha ^-1之间。E.saligna。两种植物的最佳种植密度均被证明为1万棵ha ^-1，这显示出更好的生物量积累和生长性能，此外死亡率更低，对生产力的影响更小。关于土壤营养，已确定随着作物密度的增加，养分（N，P，K，Ca）的损失增加，在2万棵ha ^-1的密度下，在24个月内损失高达33％。对于这两个物种，处理10 000公顷ha ^-1的土壤在土壤表层20 cm处的有机物浓度最高。最后，木材化学方面在任何处理下均未显示出性能差异。©2020年化学工业协会和John Wiley＆Sons，Ltd.