刍议欧洲木本生物质能源发展现状

木本生物质能源是一种可以代替传统化石燃料的清洁能源。文章综述了欧洲生物质能源利用的形式、市场、对土地利用的影响及其发展潜力,并对木本生物质能源今后的发展提出了建议。     

富有开发潜力的木本生物质能源树种——黄连木

由于全球矿物燃油不可再生,污染环境并且储量有限,所以发展更具环保、有再生性能的生物质能源已得到世界各国的高度重视,我国也不例外,在目前开发的各类生物质能源资源中,木本生物质能源树种——黄连木,成为极富开发潜力的亮点。     

湖北积极探索现代林业之路发展木本生物质能源产业

木本生物质能源是生物质能源的重要组成部分,是我国能源发展战略的重要内容,其不与农民争地,不与人类争粮,不与工业争原料,又能美化山川、改善生态、促进农民增收的特点,促使国家有关部门将其列为优先发展、优先支持的产业。林业生物质能源作为可再生能源重要的组成部分,面临着巨大的发展机遇,     

生物质能源林碳汇计量研究进展

随着生物质能源林的逐步推广,对其森林碳汇的研究越来越受到人们的重视。由于具有直接碳汇功能与间接碳汇功能,对生物质能源林碳汇的计量成为科学、准确评价其碳汇功能的首要问题。本文介绍了生物质能源林碳汇功能,目前国内外普遍采用的碳汇计量方法,其中,其直接碳汇以生物量法为主,间接碳汇采用产品生命周期为主的计量方法,并提出了生物质能源林碳汇计量的其他注意事项,以期全面客观的计量生物质能源林碳汇。     

泰山非粮木本生物质燃料油(柴油)能源植物资源调查初报

低碳经济是人类社会发展的必由之路,加之地球矿质资源日益短缺,发展利用可再生能源是实现社会可持续发展的根本途径。我国植物资源丰富,其中包含了许多优良的生物质燃料油能源植物,有着可观的发展前景。通过调查,基本查清了泰山地区的木本生物质燃料油植物资源,为今后的开发利用打下了基础。     

安康市生物质能源林发展的思考

生物质原料,是指以提供生物质能的植物及有机废物的原料总称,包括生物质能源作物(草本植物、木本植物、水生植物)和各类有机垃圾两大类。木本油料植物是指能从其种子或果汁中提取油料的植物,是生物质能源作物中的一种,它包括黄连木、光皮树、山茶等多种木本植物。生物质能转换技术可以高效地利用生物质能源,生产各种生物质燃料替代矿物燃料,能够减轻对环境造成的破坏,生物质能源具有环保、节能、价廉的特点,     

辽宁省木本能源植物资源的开发利用

对辽宁省木本能源植物种质资源进行了调查,找出数量多、适应性强、含油率高的树种,并对木本燃料油植物的开发利用进行了论述,为辽宁省木本能源植物的开发利用提供依据。     

科学应对生物质能源的挑战

以温家宝总理为组长的国务院生物质能源领导小组2007年正式成立，从而正式揭开了我国研究发展生物质能源的序幕，也为现代林业的发展增加了新的含义。发展生物质能源是项新型的科技含量较高的系统工程。从生物质能源的资源到脂化，再到推向市场，都需决策者、管理者、生产者运用新理念、新知识、新方法、新经验去迎接新的挑战。     

生物质能源：能源发展新出路

生物质能源是通过绿色植物,藻类和光合细菌的光合作用,捕获太阳能,经新陈代谢,储存于生物质中的能量。生物质作为能转化为液体燃料的可再生资源正成为各国科学家研究的重点。     

发展碳汇林业 应对气候变化

2010年,我国极端天气频发,使我们切身感受到气候变化的伤害。据了解,在过去一个世纪,全球气温已经上升了0.7℃,并且预计在21世纪后90年将持续升高1.8-2.4℃,气候变暖作为全球性议     

林木体细胞胚胎发生的研究进展

本文概述了近年国内外林木体细胞胚胎发生研究的进展,针对存在的问题提出相应的对策,以期推动我国林木体细胞胚胎发生研究在理论上的深入和生产上的进一步应用。今后在林木体细胞胚胎发生研究方面应加强以下五方面工作:1)珍稀优异种质规模化体细胞胚胎发生植株再生体系的研究和应用;2)林木成年优树的复壮及体细胞胚胎发生植株再生系统建立;3)进一步加强体细胞胚胎发生机理和应用技术研究;4)进一步扩大林木体细胞胚胎发生再生植株体系建立的树种数量;5)加强体细胞胚胎发生植株再生系统在林木转基因方面的应用技术相关研究。     

江西省赣江源自然保护区木本野生观赏植物资源及评价

根据植物不同的园林功能,对赣江源自然保护区内的163科、648属、1584种野生种子植物中的木本观赏植物资源进行了分析评价,共筛选出83科202属325种野生观赏植物。保护区木本野生观赏植物具有种类繁多、类型多样、植物区系组成丰富、珍稀濒危野生观赏植物丰富等特点。根据野生观赏植物的园林应用特点,将木本野生观赏植物划分为庭荫树、行道树、园景树、花灌木、垂直绿化类、绿篱类、地被植物、盆栽及造型类、色叶树种类等9大类。根据保护区木本野生观赏植物的特色及资源的贮藏量,推荐了32种作为重点开发利用的观赏植物。最后,提出了对保护区野生观赏植物资源的开发利用和保护建议。     

江西农业大学校园木本植物区系分析

据多年调查统计,查明江西农业大学校园现有木本植物88科247属412种,分析其科属构成与区系特点。     

Climate Change Mitigation Through Forestry

Abstract

One of the tools for reducing the release of carbon dioxide (CO₂), the largest component of greenhouse gas emissions, is carbon sequestration—the accumulation of carbon in terrestrial forms. This paper explores options to mitigate global climate change through forestry, constraints to forestry's applicability, secondary environmental and social benefits, and techniques established to monitor and verify results. Twenty-five current carbon sequestration projects are listed totaling an estimated 193 million tons of carbon at an average price of approximately $2.18 per ton. However, modeling exercises demonstrate that even the theoretical upper limit of carbon sequestration through forestry is not enough to stabilize carbon emissions in the atmosphere. Non-forestry CO₂ reduction measures must be taken as well.     

成都市部分公园木本植物多样性调查

对成都市不同类别的5个公园绿地进行抽样调查,对其物种组成、优势度与多样性指数等进行了统计和分析。调查表明:成都市公园绿地保存有较丰富的古老、珍稀树种资源;各公园乔木层优势度指数偏低,神仙树公园(社区公园)最高;以新益州公园物种多样性最为丰富。总体而言,乔木的多样性指数大于灌木。根据对物种多样性及乔木层优势度的分析,对各公园的群落组成、结构特点提出了改造建议。     

浙江省林业应对气候变化成效及措施研究

在全球气候变化大背景下,森林碳汇能力成为国际社会公认的减缓气候变暖的重要措施之一.文章总结了近年来浙江省林业应对气候变化成效:森林蓄积量从2005年的1.72亿m3提高到2019年的3.61亿m3,全省森林植被总碳储量达到2.8亿t;2006-2019年全省共完成造林更新41.2万hm2,共实施中幼林抚育面积约181....     

Developing Carbon Sequestration Forestry for Mitigating Climate Change: Practice and Management of Carbon Sequestration Forestry in China

By elaborating the functions and effects of forestry in mitigating climate change, introducing the concepts and significance of forest carbon sink, forestry carbon sequestration, and carbon sequestration forestry, and summarizing the practices of carbon sequestration forestry in China, the paper came up with the outline for strengthening the management of carbon sequestration forestry, i.e. implementing the Climate Change Forestry Action Plan, reinforcing the accounting and monitoring of national forest car...     

The Spring Change in Hydraulic Architecture Characteristics in Some Woody Plants

Ten healthy tree species with regular management were selected on the campus of Beijing Forestry University, and they belong to tall tree, shrub and liana, respectively. Water potential and hydraulic architecture parameters of one-year-old twigs were measured in sunny day in the last ten days of March to the middle ten days of May in 2002. The results show that the daily change in water potential of tree species examined appears convex, i.e. the water potential is higher in the morning and evening, and lower in the midday. The change trend of water potential is consistent among different months. The seasonal change trend of water potential appears lower in March than that in April and May. There is a similar relationship between the daily change trend of water potential and special conductivity in spring, i.e. the higher the water potential, the higher the special conductivity, but this trend of change is not entirely synchronic. The seasonal change of special conductivity of conifer species is not obvi     

贵州野生攀援植物资源及开发利用

贵州有野生攀援植物782种(含种以下分类群),隶属59科177属。其中木本554种,占贵州攀援植物总数的70.8%,主要为落叶种类。按不同的攀援习性,主要分为缠绕型、卷须型、吸附型和棘刺型。资源分布遍及全省,以东、东南、南及西南部山区最为丰富。本文主要对其资源特点及其在石山绿化、水土保持、园林绿化、藤制品等方面的开发利用进行了探讨。     

Carbon sequestration in the growing stock of trees in Finland under different cutting and climate scenarios

In this work the aim was to determine how carbon sequestration in the growing stock of trees in Finland is dependent on the forest management and increased production potential due to climate change. This was analysed for the period 2003–2053 using forest inventory data and the forestry model MELA. Four combinations of two climate change and two management scenarios were studied: current (CU) and gradually warming (CC) climate and forest management strategies corresponding to different rates of utilisation of the cutting potential, namely maximum sustainable removal (Sust) or maximum net present value (NPV) of wood production (Max). In this analysis of Finland, the initial amount of carbon in the growing stock was 765 Mt (2,802 Tg CO₂). At the end of the simulation, the carbon in the growing stock of trees in Finland had increased to 894 Mt (3,275 Tg CO₂) under CUSust, 906 Mt (3,321 Tg CO₂) under CUMax, 1,060 Mt (3,885 Tg CO₂) under CCSust and 1,026 Mt (3,758 Tg CO₂) under CCMax. The results show that future development of carbon in the growing stock is not only dependent on climate change scenarios but also on forest management. For example, maximising the NPV of wood production without sustainability constraints results, over the short term, in a large amount of wood obtained in regeneration cuttings and a consequent decrease in the amount of carbon in growing stock. Over the longer term, this decrease in the carbon of growing stock in regenerated forests is compensated by the subsequent increase in fast-growing young forests. By comparison, no drastic short-term decrease in carbon stock was found in the Sust scenarios; only minor decreases were observed.