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A characterisation of eucalyptus short rotation forestry plantations in Ireland

机译：爱尔兰桉树短旋转林林植物的特征

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摘要

This paper details the characterisation of the biomass for use as a wood fuel of fifteen eucalyptus plantations (including twelve Eucalyptus nitens stands, two with E. gunnii and one with E. delegatensis) being grown on a short rotation in Ireland. Two of the plantations were mature (22 and 23 years old), while 13 of the plantations were more recently established (5 to 7 years old). Mortality rates were high, ranging from 11% to 62%. Trees were sampled and analysed for moisture content, ash content, calorific value, chemical composition (C, H, N, Cl, S) and ash melting behaviour. A biomass expansion factor was developed from the sample tree data to estimate total aboveground biomass from merchantable biomass and total height. Productivity on the measured sites ranged between 0.4 - 12.6 odt (oven dry tonnes) ha~(-1) yr~(-1) of aboveground biomass. The chemical composition analysis indicated that the eucalyptus trees tested had higher than typical values for chlorine content for bark, branch, tops, and foliage partitions, as quoted in EN14961-1, which may be problematic for some biomass boilers. Tests carried out on ash melting behaviour indicated that the wood and branch partitions have a low ash melting point. The results are somewhat limited, as the eucalyptus plantations in Ireland currently are either less than 10 years of age, or over 20.
机译：本文详述了生物质用作15岁桉树种植园的木材燃料（包括12种桉树抗体，两个与E. Gunnii的两种燃料和有一个有E. Delegatensis）的人们在爱尔兰短暂的旋转中发展。两种种植园成熟（22和23岁），而13种种植园最近成立（5至7岁）。死亡率高，范围从11％到62％。对树脂进行取样并分析水分含量，灰分含量，热值，化学成分（C，H，N，Cl，S）和灰熔化行为。从样品树数据中开发了生物质膨胀因子，以估计来自商人的生物质和总高度的地上的总生物质。测量部位的生产率范围为0.4-12.6 ODT（烘箱干吨）HA〜（-1）YR〜（-1）的地上生物质。化学成分分析表明，如EN14961-1所引用的，所测试的桉树含有高于氯含量的典型值，这对于一些生物质锅炉可能是有问题的。在灰熔化行为上进行的测试表明，木材和分支分区具有低灰分熔点。结果有些有限，因为爱尔兰的桉树种植园目前少于10岁，或超过20岁。

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