桉树人工林风险分析与可持续经营研究——以“永林公司”经营区为例

桉树是我国南方最重要的人工林树种之一,因具有广泛的适应性而得到大力发展,已成为我国林业史上引种最为成功的树种之一,也是永林公司主要造林树种。因此,本文以永林公司经营区桉树人工林为例,在深入进行桉树引种风险分析的基础上,建立了桉树人工林可持续经营技术措施体系,从而为永林公司桉树人工林可持续经营提供了有力的技术保障,也为我国桉树可持续发展提供了参考。     

桉木美学家具设计与工艺研究

为探索美学家具设计和桉木高值利用的可行途径,本文综合运用仿生学、设计学、木材美学和木材加工工艺学等多学科知识,从作品设计、制作工艺和作品分析三个方面系统讨论了两款以桉木为原料的美学家具.结果表明:通过合适的模具设计,采用单板层积材的生产工艺,可以用桉木单板生产出多拐点的复杂曲面板材.将这种多拐点的复杂曲面板材应用于家具设计与生产,可以获得兼具实用和审美功效的桉木美学家具.通过桉木美学家具的研发和生产,可望实现桉木资源的高值利用.     

金融危机对我国桉树人工林产业发展的影响及对策

本文通过分析世界不同地区在金融危机前后林产品产量、出口和需求等指标,根据联合国欧洲经济委员会和联合国粮食及农业组织2009年8月发布的《林产品市场年度评论》（2008—2009）中相关的公开共享数据,科学地分析金融危机对世界和中国林业产业及中国桉树种植业的影响,并提出克服影响的建议,以解决传统的森林经理学和桉树决策支持系统无法处理的突发事件对桉树生产的影响。     

Designing mimics from incomplete data sets: salmon gum woodland and heathland ecosystems in South West Australia

In this article we assess the potential for developing mimics in situations where detailed data on the ecophysiology and ecosystem function of the native ecosystem are not available. We examine two ecosystems in south western Australia, and draw together available information on these. We discuss woodlands dominated by Eucalyptus salmonophloia, which formerly covered much of the valley bottom land in the Western Australian wheatbelt, and kwongan or heath which occurs on sandplain soils at the top of the landscape. From both of these we derive possible mimics which utilise aspects of the native vegetation which we hypothesise contributed to ecosystem function and resilience, but which still allow the production of a harvestable agricultural product. We conclude that situations for which we have adequate ecological knowledge from which to develop sound mimics are likely to be rare. We hence have to be prepared to make best-bet estimates and use these to develop experimental mimic systems. This revised version was published online in June 2006 with corrections to the Cover Date.     

Decomposition rates of forest residues and soil fertility after clear‐cutting of Eucalyptus grandis stands in response to site management and fertilizer application

Forest residues (i.e. harvest residues and litter) are important nutrient sources for trees because soils of poor fertility are used for eucalypt plantations in Brazil. Understanding the dynamics of decomposition for these residues and their effects on soil fertility are relevant for the management of forest plantations. The objectives with this study were to assess the effects of forest residue management and fertilizer, both applied in the establishment of a Eucalyptus grandis Hill ex Maiden stand, on the decomposition rate (k), nutrient release and soil fertility after harvest of this stand. The treatments were applied to a plantation (R1). After 8 yr, R1 was clear‐cut and all of the treatments were reapplied to a new planting (R2). At the end of R1 (age of 8 yr), there was a reduction of 10% in the wood volume in the treatment with the forest residues removed and 36% reduction with no fertilizer application. At the end of 1 yr for plantation R2, these reductions were 30 and 57%, respectively. Residue decomposition under R2 was assessed by a new approach that involved collecting samples directly on the site without using litter bags. The k of forest residues was 3.6 for leaves, 1.2 for bark and 0.8 for branches. The application of small rates of N and P fertilizer did not influence the k of forest residues. In the first 300 days after clear‐cutting, approximately 50% of N, P, Ca, Mg and S and 80% of K in the forest residues were released. Even so, this did not result in significant changes in soil fertility levels. Only small reductions in soil N and P contents over time and changes in topsoil pH resulted from forest residue removal.     

桉树生态配方肥应用效果

目的：对桉树生态配方肥应用效果进行试验,为广西按树人工林大面积种植及桉树林土壤养分管理提供参考依据。方法：本次对705．9hm^2共22个标准地的林分中使用桉树生态配方肥,采取定性和定量分析相结合的方法,根据林龄的不同分别对各个林分进行评价。结果：达优良等级有19个林分,占调查总数的86．4％;中等等级3个,咕调查总数的13．6％;不同施肥处理试验中,施用该生态肥桉树平均胸径比巍用俄罗斯复合肥增加13．3％．产量增产达29．4％。结论：该按树生态配方肥具有广泛适应性和效果重现性,能很好地促进桉树林分的生长。增产效果明显。     

我国桉树研究人员计量分析

以1989-2004年《维普中文科技期刊数据库》、《中国期刊全文数据库》收录的桉树研究文献为依据。用文献计量学的方法．对我国桉树研究人员的地区分布、人员数量的年际变化、核心作者群和作者所在机构等方面进行了统计与分析。     

Identification,pathogenicity and control of powdery mildew caused by Erysiphe elevata on Eucalyptus pellita in Sumatra,Indonesia

Powdery mildews are biotrophic ascomycetes that do not typically kill their hosts, but instead interfere with normal plant growth. In Indonesia, white powdery spots were observed forming on the upper part of fully developed leaves of Eucalyptus pellita planted in sand beds of a clonal nursery. Thus, this study aimed to identify the causal agent of eucalypt powdery mildew in Indonesia as well as to develop control strategies to better manage the disease. Pathogen identification was based on morphology, molecular characterization of DNA sequencing the ITS region and pathogenicity test. In addition, considering that some powdery mildews are inhibited by free moisture on leaves, efficacy of foliar watering was tested for disease control. Phylogenetic analyses showed that isolates collected from infected eucalypt plants grouped together with other sequences of the Erysiphe elevata clade with bootstrap support of 99%; a similar result was also confirmed by morphological observations. Pathogenicity of powdery mildew on eucalypt plants was confirmed through artificial inoculation, thus fulfilling the Koch's postulates. For disease control, foliar watering reduced the incidence of powdery mildew on mother plants. The reduction of the disease incidence began to be more evident at 2 weeks after trial establishment, and in the fourth week, the incidence was below 10% in all three treatments, while the control was above 20%. Therefore, we concluded that E. elevata is the causal agent of powdery mildew in Indonesia and that one application of foliar watering per week was enough to minimize the disease impact in the nursery.     

广西桉树青枯病危害现状及防治方法和对策

描述桉树青枯病的发生症状及发生规律,评述广西桉树青枯病危害现状,分析广西桉树青枯病危害日益严重的原因并提出桉树青枯病的防治方法和对策。     

桉树人工林下鸡骨草种植技术及效益评价

鸡骨草（Abrus cantoniensis）是在桉树人工林下间种的多种药用植物中初步筛选出的对水土保持作用强、经济效益较好的品种之一。从鸡骨草种子处理、整地、播种、施肥、管护、采收等方面总结介绍了鸡骨草在桉树林下栽培经营技术,并对综合效益进行了初步评价。