Yield and spatial supply of bioenergy poplar and willow short-rotation coppice in the UK
Yield and spatial supply of bioenergy poplar and willow short-rotation coppice in the UK
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DOI：
10.1111/j.1469-8137.2008.02396.x
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发表时间：
2008-01-01
期刊：
影响因子：
9.4
通讯作者：
Taylor, Gail
中科院分区：
文献类型：
--
作者：
Aylott, Matthew J.;Casella, E.;Taylor, Gail
英国关于生物能源作物可能的供应和空间产量的信息有限。在这里，生产力报告白杨（杨属）。和杨柳（Salix spp.）采用偏最小二乘回归技术对英格兰和威尔士的实际田间试验观测数据进行了分析。然后在不同的土地利用方案下评估空间生产力，模拟的平均产量在4.9和10.7烘干吨公顷（odt）/年之间。产量普遍较高，杨柳比白杨，反映了敏感性老白杨基因型锈病和单茎优势的趋势。取代了10%的耕地，在英格兰和威尔士，20%的改良草地和100%的保留草地，具有三种最具生产力的基因型，每年将产生13 Modt的生物量（供应英国7%的电力生产或48%的英国热电联产（CHP）生产）结果表明，现有的SRC基因型具有立即成为可再生能源混合组合的重要组成部分的潜力，并且在未来，随着新的和改进的基因型变得可用，更高的产量可以进一步扩大这一潜力。
Limited information on likely supply and spatial yield of bioenergy crops exists for the UK. Here, productivities are reported of poplar (Populus spp.) and willow (Salix spp.) grown as short-rotation coppice (SRC), using data from a large 49-site yield trial network.A partial least-squares regression technique was used to upscale actual field trial observations across England and Wales. Spatial productivity was then assessed under different land-use scenarios.Mean modelled yields ranged between 4.9 and 10.7 oven-dry tonnes (odt) ha(-1) yr(-1). Yields were generally higher in willow than in poplar, reflecting the susceptibility of older poplar genotypes to rust and their tendency for single stem dominance. Replacing 10% of arable land, 20% of improved grassland and 100% of set-aside grassland in England and Wales with the three most productive genotypes would yield 13 Modt of biomass annually (supplying 7% of UK electricity production or 48% of UK combined heat and power (CHP) production).Results show existing SRC genotypes have the immediate potential to be an important component of a mixed portfolio of renewables and that, in future, as new and improved genotypes become available, higher yields could extend this potential further.