| 黄土高原主要树(草)种热值试验 |
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| 引用本文： | 李立,周泽生,王晗生,董鸿运,董建国,杨光.黄土高原主要树(草)种热值试验[J].水土保持研究,1992,0(1):97-102. |
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| 作者姓名： | 李立 周泽生 王晗生 董鸿运 董建国 杨光 |
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| 作者单位： | 中国科学院水利部西北水土保持研究所, 陕西杨陵 712100 |
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| 摘 要： | 能源林主要是生产热能，树（草）种燃烧值的高低，是评选能源林树（草）种的重要指标。通过对黄土高原29种树（草）种燃烧值的测定表明，木本植物的燃烧值大于草本植物，这种能量差异主要是草本植物含有较多的灰分，结构物质纤维素含量较高，木本植物灰分含量较低，脂类物质相对较多。同时发现10种树种的热值随着年龄的变化多以5年生时的热值为最高，这对确定树种的平茬期，在生产上具有重要意义。
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| 关 键 词： | 热值 树种 平茬期 |
THE EXPERIMENT OF GALORIG VALUE ON THE MAIN TREE SPEGIES (GRASS INGLUDED) IN THE LOESS PLATEAU |
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| Li Li,Zhou Zesheng,Wang Hansheng,Dong Hongyun,Dong Jianguo,Yang Guang.THE EXPERIMENT OF GALORIG VALUE ON THE MAIN TREE SPEGIES (GRASS INGLUDED) IN THE LOESS PLATEAU[J].Research of Soil and Water Conservation,1992,0(1):97-102. |
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| Authors: | Li Li Zhou Zesheng Wang Hansheng Dong Hongyun Dong Jianguo Yang Guang |
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| Institution: | Northwestern Institute of Soil and Water Conservation, the Chinese Academy of Sciences and the Ministry of Water Conservancy Yangling, Shaanxi 712100 |
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| Abstract: | A energy forest is principally used as producing heat energy, and a tree species’s caloric value (grass included) is a significant index to choose energy-forest species (grass included) through appraisal. By the determination of caloric value for twenty-nine tree species (grass included) in the loess plateau, it showed that a woody plant’s caloric valne was higher than a grassland plant’s, the energy difference between woody and grassland plants was chiefly due to more ash content and higher cellulose content of a grassland plant, while lower ash content and more fatty substance of a woody plants. Meanwhile it was found that the caloric values of ten tree species varied with its age, with the highest caloric value of a tree species at the age of five, this finding is significant for determining mowing stage of a tree species in the production. |
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| Keywords: | caloric value tree species mowing stage |
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