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木材碳学是近年来兴起的一门科学, 其主要研究内容包括木材碳素的储存量、木材储能、人工林木材固碳增汇与优质木材培育技术及木质产品固碳延伸等方面。文中简述了木材碳学研究中木材固碳量与含碳率、木材固碳量的影响因素、木材固碳量与木材热值的关系以及木质材料固碳量和固碳延伸等方面的研究现状, 并对今后的研究方向进行了展望。 相似文献
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在“双碳”目标背景下,木材因其固碳特性越来越受到关注,木质复合室外材也得到了大量应用。为解决木质材料在室外使用的一系列问题,研究者进行了大量研究和开发工作。对室外用木质复合材料的特点、生产工艺、技术要点进行了总结和分析,并提出了室外木质复合材料发展方向。 相似文献
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使用林木采伐审批数据,采用生物量扩展因子法估算了河南省2016-2019年年均采伐木材的固碳价值和木材价值。河南采伐木的年均固碳量为68.45万t,固碳价值为14130.74万元,对应木材价值为107 983.25万元。建议改进木材防腐技术和固碳技术,延缓木材分解时间,将碳封存在木质林产品中。改进林业碳汇交易方法学,提高方法学的便捷性和灵活性,加速森林碳汇广泛纳入碳市场交易。 相似文献
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木质复合材料──木材工业的发展方向 总被引:6,自引:0,他引:6
本文介绍了木材与塑料、合成纤维及其他非木质材料复合所形成的复合材料及其基本性质、加工工艺和应用前景。木质复合材料是一种很有发展前途的新型材料,此种材料的加工技术扩展了木材的应用领域,亦为木材工业提供了新的发展方向。 相似文献
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木材加工企业纵向一体化发展的成本分析 总被引:2,自引:0,他引:2
比较了加工企业与木材供应者经济联系形式的特征,用企业理论系统分析了木材加工企业纵向一体化发展过程中的契约成本与资产管理成本,试图诠释其纵向一体化发展过程中的行为。特别讨论了林工联合中不同经济联系方式的成本与风险,期望该分析能为企业选择联合方式提供指导。 相似文献
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《Forest Policy and Economics》2008,10(4):257-269
Climate change has become an important environmental policy issue. Numerous carbon sequestration policy initiatives, potential benefits of which in environmental, economic and social terms could be substantial, are directed toward both woodland expansion and using of wood as a substitute for fossil fuels. There is a great deal of uncertainty, however, on how to define sustainability of such policies in a broadly acceptable and efficient way; how to translate sustainability requirements into policy guidelines; how to overcome market limitations and where to place biomass production in the general context of land use where contemporary agricultural change will likely be influential. On the basis of several countries from Europe (the United Kingdom, the Netherlands, Slovakia, and Ukraine) this paper highlights social and economic problems of moderating carbon emissions through afforestation. It provides an indication of whether forestry can offer a socially acceptable and a low-cost opportunity for carbon uptake. The conclusion is that along with carbon sequestration potential, the level of land use integration and the stage of institutional development play important roles for effective implementation of climate policies. The necessity is then to link these policies with regional developments, and to back them up with adequate economic incentives, appropriate institutions and with public engagement in environmental decision-making. 相似文献
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香菇等食用菌在我国具有近千年的栽培历史,是山区经济发展的重要产业,食用菌原料林的培育对于以阔叶权赤原食用菌产业持续发展意义重大。本文重点对食用菌原料林树种的优选、人促更新定向培育、主要原料林树种的丰产栽培以及其采种基地建设等进行述评。根据食用菌原料林培育研究现状和存在问题,提出进一步发展的技术对策和今后的研究重点,包括主要原料树树的种的良种选育和扩繁技术、育苗技术、松杉林冠下造林技术和多种食用菌原料林树种混植技术、二代食用菌原料林的萌芽更新技术等。 相似文献
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This study investigates the combined impact of carbon and bioenergy markets on upland oak dominated mixed hardwood forests in the Central Hardwood Forest Region (CHFR) of the United States. A modification of the Hartman model was used for the economic analysis of carbon sequestration and using wood-based biomass for bioenergy. A life-cycle assessment was used to determine the amount of carbon sequestered due to stand growth and emitted during harvesting and decay of wood products. Two scenarios were taken, one where additionality of carbon is considered and the other where it is not. Sensitivity analysis was done with the range of carbon and bioenergy prices. The results show that net carbon payments have more impact on land expectation value (LEV) when additionality is not considered; in contrast, bioenergy payments have more impact on LEV when additionality is considered. Carbon and bioenergy prices also influenced the amount of stand level supply of forest products and carbon in both scenarios. In general, sawtimber, wood bioenergy, and carbon supply increased with an increase in carbon prices, whereas, pulpwood supply decreased. With few exceptions at higher carbon prices, bioenergy supply decreased with the increase in wood bioenergy prices, showing a backward bending supply curve in both scenarios. 相似文献
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Vincent Oeba Larwanou Mahamane Samuel CJ Otor James B Kung’u Muchiri N Mbae 《Southern Forests》2017,79(2):117-124
The introduction of carbon finance as an incentive in forestry farming has a potential of increasing the amount of carbon sequestered. However, this has created a daunting task among investors in forestry to optimise the joint production of wood and carbon sequestration. For instance, investors might find it profitable to give up some timber returns in exchange for carbon credits. This study evaluated expected income from growing Cupressus lusitanica Mill., Pinus patula Schiede ex Schltdl. & Cham., Eucalyptus saligna Sm. and Juniperus procera Hochst. ex Endl. for wood and/or the carbon market in central Kenya. The global average unit price of carbon and stumpage royalty were used to estimate expected returns from sale of carbon credits and wood, respectively. There were significant differences (p < 0.01) in the expected amount of income from sale of carbon and wood among the four species. Specifically, at economic rotation of 30 years with stand density of 532 trees ha?1 P. patula and C. lusitanica yielded US$28 050 and US$23 650, respectively, from sale of carbon compared with US$59 000 and US$51 000, respectively, from sale of wood. This was twice the value investors receive from clear-felling as compared with sales from carbon. Similarly, at economic rotation of 33 years with stand density of 150 trees ha?1, a forest investor in E. saligna would earn US$15 400 from sale of carbon compared with US$33 000 from sale of wood. Overall, the amount expected to be realised from sale of carbon was lower compared with that from sale of wood. This demonstrates that the price dynamics of carbon offsets in the voluntary and the compliance markets need to remain competitive and attractive for the forest owners to give up some timber returns in exchange for carbon income or to modify forest management regulation in order to increase carbon sequestration. 相似文献
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从产业格局、原料资源、生产水平和规模、产品市场、科技创新、人才培养等方面,分析我国西南地区木材工业的现状,提出国家政策扶持、培育循环经济发展模式、调整产品结构、形成科学技术支撑要点以及森林生态环境修建区域经济补偿制度等建议,诠释西南地区木材工业在西南地区乃至全国的社会、经济和生态环境地位. 相似文献