建好"园中园"大力发展生态旅游

对江西省自然保护区、森林公园开展生态旅游情况进行了专题调研，考察了外省部分自然保护区。在此基础上阐述了自然保护区及森林公园建设的重大意义，分析了江西林业系统开展生态旅游的资源优势、比较优势、有利条件和机遇，指出了其建设现状及存在的问题，就新时期加快江西“后花园”中的“园中园”建设提出了几点建议。     

坚持集群提升发展倾力打造"木业之都"

江山地处浙江、福建、江西3省交界，是长三角、珠三角和海西经济区辐射内陆的重要门户，区位优势十分独特。近年来先后被评为中国优秀旅游城市、中国金融生态城市、全国绿化模范县（市）、全国绿色小康县等。2008年江山市实现生产总值130．7亿元，财政总收入10．3亿元，农民人均纯收入7737元。     

"十五"期间江西林业投资分析

“十五”期间江西林业投资规模和投资结构都有一定的变化,总投资较“九五”时期增长2.86倍,投资效果显著。文章分析“十五”期间江西林业投资中存在的主要问题,提出以下建议:拓展生态林业建设的投融资渠道,整合各类林业生态建设资金,完善商品林业发展的市场化运作机制,建立投融资风险约束机制,以提高林业投资效益。     

《江西省林业发展"十四五"规划》正式印发

7月5日,省林业局联合省发展和改革委员会印发《江西省林业发展"十四五"规划》(以下简称《规划》). 《规划》是江西林业进入新时代、向第二个百年奋斗目标进军的第一个五年规划,坚持以习近平生态文明思想为指导,深入践行绿水青山就是金山银山和山水林田湖草沙系统治理理念,紧紧围绕省委提出的纵深推进生态文明试验区建设、高标准打造美丽中国"江西样板"的目标要求,紧扣江西实际,坚持问题导向,树立系统观念,强化创新精神,从更高水平系统谋划建设好、保护好、利用好绿水青山三篇文章,为江西林业高质量发展、实现林业强省目标提供强有力规划保障.     

江西家具业现状及发展对策

江西竹木资源丰富，通过分析江西家具业的现状与存在的实际问题，提出了振兴江西家具业的措施，从而提升江西家具业的整体实力，繁荣江西经济，满足人们日益增长的物质需求。     

江西，群星闪烁的历史天空

江西，中国东南的一个内陆省份。论面积，属于中等偏小，论经济，也属于中等行列。但是大自然似乎格外眷顾江西，宜人的气候、多样的地貌、秀丽的山水，以及丰富珍奇的自然物种，无不展示出江西优秀的自然禀赋。江西专辑，试图用一期整本杂志，去解读这个“物华天宝”的江西。     

竹业与江西林业经济可持续发展

江西是中国重点产竹省区之一，竹林是江西的重要森林资源，竹业是江西林业的支柱产业。根据江西竹类资源及其特点，论述了竹业在江西林业经济可持续发展中的战略地位及发展现状，分析了江西竹业的发展潜力、发展优势和当前亟需解决的关键技术问题，最后就加强竹业可持续发展提出了几点建议。     

江西竹林经济的持续发展

江西是中国重点产竹省区之一，竹林是江西的重要森林资源，竹业是江西林业的支柱产业。本文根据江西竹类资源及其特点，综述了竹业在江西林业经济可持续发展中的战略地位及发展现状，分析了江西竹业的发展潜力、发展优势和当前急需解决的关键技术问题，最后就加强竹业可持续发展提出了几点建议。     

江西:省委书记、省长搭唱"林改"大戏

“孔雀东南飞”、“东部龙抬头”、“西部大开发”、“振兴大东北”,当这些都为人们耳熟能详的时候,在中国的版图上,林地面积占全省总面积的62.6%的“中部盆底”江西省,林木蓄积量才2.9亿立方米,仅仅是福建的69%,“林改”在全国滞后。如何振兴江西林业,使江西林业走出困局?于是,一台别开生面的“林改”大戏在这块红土地上拉开了帷幕……     

江西省湿地资源特点及其可持续利用模式

湿地资源的合理利用与保护已成为当今国际社会的研究热点，以江西湿地资源为研究对象，分析了江西湿地的主要特点，论述了江西湿地在合理利用与保护中存在的问题，提出了江西湿地资源可持续利用的三大模式。     

Browsing Damage on Pine (Pinus sylvestris and P. contorta) by a migrating moose (Alces alces) Population in Winter: Relation to Habitat Composition and Road Barriers

In Scandinavia, moose (Alces alces L.) sometimes cause severe browsing damage to economically-important pine. Moose-vehicle accidents have spurred construction of fences along roads, and these may interfere with moose migration between summer and winter ranges, or the road alone may be a barrier. If this happens and moose build up along roads, landowners may suffer economically. Therefore, this study investigated whether roads, fences or other factors influence the use of young pine stands by moose. Eighty stands along roads in northern Sweden were evaluated in which individually-browsed branches were counted on 9972 pines. Moose browsing was not significantly related to birch (Betula pendula Roth, B. pubescens Ehrh.) density, nor did it differ between pines (Pinus contorta Douglas or P. sylvestris L.). However, increased pine density, site productivity and proximity to a highway were associated with increased browsing. Further large-scale studies are needed to understand moose habitat selection and the effects of roads.     

Effects of Root Freezing on the Physiology and Growth of Picea glauca,Picea mariana and Pinus banksiana Seedlings Under Different Soil Moisture Regimes

The root systems of 2-yr-old Picea glauca, Picea mariana and Pinus banksiana seedlings were submitted to various frost temperatures during an artificial frost to induce different levels of root damage. Frost-damaged and control seedlings were placed in a greenhouse under high and low soil moisture regimes. Seedling growth and physiology were evaluated periodically. Seedling survival was reduced when root damage reached levels of 60-80%. Root systems of all three species showed partial to total recovery by the end of the experiment. In general, root freezing damage caused reductions in seedling growth, with these reductions becoming less significant over time. Root damage had little to no effect on black spruce and jack pine seedling physiology, while white spruce CO 2 uptake decreased with increasing root damage. Shoot nitrogen content of all three species decreased slightly with increasing root damage.     

Stand Structure in Pine,Spruce and Deciduous Forests: A Comparison Between Finnish and Russian Karelia

This study investigated the stand structure in pine, spruce and deciduous forests in the border district of Finland and Russia. A total of 46 mature forest stands was selected as pairs, the members of each pair being as similar as possible with respect to their forest site type, age, moisture and topography. The stands were then compared between the two countries by means of basal areas and number of stems. The proportions of dominating tree species were 2-12% lower, and correspondingly the proportions of secondary tree species higher, in Russian forests. The density of the forest stock was also higher in each forest type in Russia. The forests in the two countries differed most radically in terms of the abundance of dead trees. The amount was two to four times higher in Russian deciduous and spruce forests, and in pine forests the difference was 10-fold. The stand structures indicated that Russian coniferous stands, in particular, were more heterogeneous than intensively managed pine and spruce stands in Finland.     

Growth and Terminal Bud Formation in Picea abies Seedlings Grown with Alternating Diurnal Temperature and Different Light Qualities

The root collar diameter and the height:diameter ratio are of particular importance in container-grown seedlings where a high density in the containers may produce spindly seedlings. Temperature regimes and light quality are known to affect plant growth. The aim of this study was to identify responses in Picea abies (L.) Karst. seedlings grown with light providing different red:far-red ratios and under temperature regimes with alternating day (DT) and night temperature (NT) from negative (DT < NT) to positive (DT > NT) difference (DIF) between DT and NT. Experiments were conducted in controlled environment chambers and in a daylight phytotron. Only limited thermoperiodic responses appeared in P . abies seedlings with respect to seedling height and dry weight accumulation. The formation of terminal buds, however, was clearly delayed in seedlings grown at negative DIF. The results indicate a requirement for day extension light that is high in far-red, to prevent terminal bud formation under natural short-day conditions. An extended study should be conducted to clarify the minimum level of light intensity and the optimal light quality needed to prevent terminal bud formation under natural short-day conditions.     

CAD与建筑设计的关系

本文分析了CAD在设计中引起的正面和负面影响,并进行了系统的阐述,从而使设计者在应用中能够保持客观的态度。     

Natural Regeneration in Clear-cuts: Effects of Scarification,Slash Removal and Clear-cut Age

The effects of soil scarification (mounding), slash removal and clear-cut age on the natural regeneration in clear-cuts was evaluated using data from four sites in southern Sweden. The treatments were carried out during a good seed and establishment year for birch ( Betula pubescens Ehrh. and B. pendula Roth). Scarification had the strongest positive effect on the density of naturally regenerated seedlings, especially in birch, but also in pine ( Pinus sylvestris L.) and spruce [ Picea abies (L.) Karst]. Slash removal had a positive effect on birch density. No statistically significant effect of clear-cut age was found. In addition, no statistically significant interactions between clear-cut age and scarification or slash removal were found. The ingrowth of field vegetation was the fastest in areas that were not scarified, less rapid in areas scarified on old clear-cuts, and the slowest after scarification in fresh clear-cuts. In conclusion, it may be possible to control the density of birch during a good establishment year for birch. If birch is desired, the best combination of treatments is to remove the slash and scarify; otherwise, these treatments should be avoided.     

Risk Perception Among Non-industrial Private Forest Owners

Based on an enquiry, risk perception among non-industrial private forest owners is described in relation to climate change and forestry hazards. Of the respondents, 11% took action to remedy the effects of climate change. Out of a given set, hazards were ranked according to each respondent's experience of recent substantial financial loss to the estate and in relation to his or her willingness to make investments aimed at risk reduction. For each hazard, the respondent assessed the risk in four classes ranging from very high to negligible risk. Six hazards were considered most problematic in all three aspects: browsing damage, falling timber prices, damage by wind, spruce bark beetle, root rot and pine weevil. A majority of the respondents claimed to take action to reduce the risk associated with at least one hazard, while 35% did not know whether they did. Excluding climate change, the need for decision support was the largest in relation to damage by wind owing to a combination of perceived high risk and a high level of ignorance in relation to whether risk-reducing measures were taken.     

Interactions in decomposition and N mineralization between tropical legume residue components

In situ produced plant residues contain a mixture of different plant components of varying quality. To assess synergistic or antagonistic interactions occurring during the decomposition and mineralization of such mixtures, individual plant parts (stems, leaves, leaf litter and roots) or the mixture of stems, leaves and leaf litter of the agroforestry species pigeonpea (Cajanus cajan) or of crop residues of peanut (Arachis hypogaea) or of the weed hairy indigo (Indigofera hirsuta) were incubated in pots for 19 weeks. Periodically, remaining plant residues were sieved out (>2 mm), weighed and N content as well as soil mineral N determined. Above- and below-ground residues of peanut decomposed fastest and showed the largest N release in agreement with their high N concentration and low-acid detergent fibre (ADF) : N ratio. Hairy indigo was hypothesized to be of lower quality than pigeonpea because of its high-polyphenol content. However, it decomposed faster than pigeonpea, largely because of the higher N and lower lignin concentration of its components. Ranking of individual plant components for N mineralization resulted in the following pattern, leaves > leaf litter > roots > stems. In mixtures of the different plant components a similar species order in decomposition was obtained, e.g. peanut > hairy indigo > pigeonpea. The amount of N released from the mixture was dominated by stem material that comprised 46–61% of the mixture. The interactions in mixtures were relatively small for peanut (generally high-quality components) as well as for pigeonpea (low proportion of high-quality components, i.e. N rich leaf material). However, a positive interaction occurred during later stages of N mineralization in the mixture of hairy indigo as it had a significant proportion of N rich components and absence of highly reactive polyphenols. Thus, for plants with low to intermediate chemical quality attributes, manipulating plant composition (e.g. by varying harvest age, affecting stem and leaf proportions) will be important to obtain significant interactions during decomposition when its components are mixed.     

Pasture production and tree growth in a young pine plantation fertilized with inorganic fertilizers and milk sewage in northwestern Spain

The use of organic waste materials such as milk sewage as an organic fertilizer could have the dual advantages of organic-waste disposal and reduced dependence on inorganic fertilizers. The effects of fertilization with (1) conventional mineral fertilization, (2) milk sewage sludge at 40 kg N ha⁻¹ target rate and (3) no fertilization on pasture production and tree growth were examined in an experiment consisting of two pasture mixtures under a one-year-old Pinus radiata plantation with a density of 2500 trees ha⁻¹. The two pasture mixtures were: (1) Dactylis glomerata L. var. saborto (25 kg ha⁻¹) + Trifolium repens L. group Ladino (4 kg ha⁻¹) + Trifolium pratense L. var. Marino (1 kg ha⁻¹); (2) Lolium perenne L. var. Tove (25 kg ha⁻¹) + Trifolium repens L. group Ladino (4 kg ha⁻¹) + Trifolium pratense L. var. Marino (1 kg ha⁻¹). The experiment began in the spring of 1995 using a randomized block design with three replicates in Castro Riberas de Lea (Lugo, Galicia, north-western Spain). Plot size was 12 × 8 m², with a 1 m buffer strip between plots. Two-year data showed that fertilization with either material had a positive effect on pasture production, with no significant difference between the two fertilization treatments. Tree growth in the milk sewage sludge plot was significantly higher than in the control plots. Inorganic fertilization increased pasture production, but affected tree growth negatively. The results show that milk sewage sludge could be used as a fertilizer in silvo-pastoral systems. This revised version was published online in June 2006 with corrections to the Cover Date.