Estimation of chemical traits in poplar short-rotation coppice at stand level
Estimation of chemical traits in poplar short-rotation coppice at stand level
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DOI：
10.1016/j.biombioe.2009.09.004
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发表时间：
2009-12-01
影响因子：
6
通讯作者：
Bonari, Enrico
中科院分区：
文献类型：
--
作者：
Guidi, Werther;Tozzini, Cristiano;Bonari, Enrico
为了改善可收获生物质的质量特性，并加强其转化为第二代生物燃料（如生物乙醇），应高度重视对木材能源种植园的管理。这项工作是一种尝试，估计生物量的化学组成在林分水平的白杨人工林。根据树干截面化学性状与径级分布的关系，比较了3种不同采伐周期的生物产量和化学成分。2年生林分生物量年平均产量较低（11.7 tDM ha（-1）y（-1）），纤维素含量较低（42.5%），木质素含量较高（22%）。与此相反，在4年采伐周期下，不仅年产量较高（18.4 tDM ha（-1）y（-1）），而且生物量中纤维素含量最高（51.6%），木质素含量较低（19%）。这些结果表明，不同的管理措施，包括采伐周期，可能会影响不仅产量，但也收获生物量的质量性状的白杨短轮伐期矮林。(C)2009爱思唯尔有限公司保留所有权利。
in order to improve qualitative traits of harvestable biomass and enhance its conversion into second generation biofuels (e.g. bioethanol), much attention should be paid to manage woody-energy plantations. This work represents an attempt to estimate chemical composition of biomass at stand level in poplar plantations. Based on the relationship between chemical traits of stem cross-sections and the corresponding distribution of diameter classes within the whole plantations, three different harvesting cycles were compared in terms of biomass yield and chemical composition. Under 2-year rotation, the stand showed the lower biomass annual yield (11.7 tDM ha(-1) y(-1)) and the lower cellulose (42.5%) and the higher lignin (22%) proportion. On the contrary, under the 4-year cutting cycle, annual yield was not only higher (18.4 tDM ha(-1) y(-1)), but the biomass also presented the highest cellulose (51.6%) and the lower lignin (19%) share. These results suggest that different management practices, including the cutting cycle, may affect not only yields but also qualitative traits of harvestable biomass of poplar short-rotation coppice. (C) 2009 Elsevier Ltd. All rights reserved.