我爱读《广西林业》

自2010年以来，《广西林业》杂志进行了多次改版，重点打造《卷首语》、《本刊特稿》、《生态文化》等精品栏目，先后开设了《林改风云》、《桉树天地》、《专家访谈》等热点专栏，开设了知识性强的《科普长廊》、《红木鉴赏》、《硬木世界》等以及趣味性强的《森林美学》、《森林崇拜》等栏目，杂志的权威性、知识性和趣味性明显增强。从读者调查问卷来看，杂志的改版赢得了广大读者的支持和肯定在此选登一些读者来信，以表对广大读者关注和支持的感谢!     

好书好产品

《城乡致富技术大全》20元／册，《新编农村新技术精华本》30元／册，《综合养生长寿法》30元／册，《五行蔬菜汤强健法》配光盘28元／册，（此书原著日本立石和，能治百病，服药健康长寿），《怎样经营小本生意》30元／册，《全国药材收购厂家汇编》30元／册，《一千种实用致富机械》30元／册，《养生秘典》110元/册，《御方名方名秘方验方精选》65元／本，（配养生保健光盘）。雅猫牌《电脑辐射消除仪》388元／个，     

《江苏林业科技》征稿简则

1《江苏林业科技》为向国内外公开发行的综合性的林业科学技术期刊。1974年创刊。为全国中文核心期刊、《中国学术期刊（光盘版）》人编期刊。本刊是CAB《ForestryAbstracts》、《PlantBreedingAbstracts》、《Hor-ticulturalAbstracts》，《中国林业文摘》，《中国农业文摘》，《全国报刊索引》，“中文科技期刊数据库”，     

四川省青神云华竹旅有限公司

四川省青神县云华竹旅有限公司成立于1993年，是眉山市竹编行业的龙头企业、四川省林产业二十强企业和省经委确认的国家重点企业。公司位于眉山市青神县南郊，面积6．4hm2,1993年兴建了“中国竹艺城”，展示和销售的“云华”竹编艺术品是当今世界精品，代表作有《隐形观音》、《中国百帝图》、《清明上河图》，《长城》、《幽远》、《鹊华秋色图》、《八仙图》、《中国百帝图》、《伟人颂》、《竹编舞动巨龙》、《老北京》、《中华情》等。     

中国林业专著之最

中国古代积累的丰富的林业科学技术知识，不仅散见于《诗经》、《周礼》、《尔雅》、《齐民要术》等各种古籍之中，而且还有专著。如《南方草木状》是中国现存最早的植物志，《竹谱》是中国最早的竹类专著，《植物实名图考》是中国最早的植物图谱。     

《江苏林业科技》征稿简则

1《江苏林业科技》为向国内外公开发行的综合性的林业科学技术期刊。1974年创刊。为全国中文核心期刊、《中国学术期刊（光盘版）》人编期刊。本刊是CAB《Forestry Abstracts》、《Plant Breeding Abstracts》、《Horticultural Abstracts》，《中国林业文摘》，《中国农业文摘》，《全国报刊索引》。     

郁钧剑 说出百姓心里话

他是第九至十二届连续四届的全国政协委员，他是中国文联演艺中心主任，他是著名歌唱家，曾凭借《小白杨》、《什么也不说》、《说句心里话》、《当兵干什么》、《家和万事兴》、《哨所喇叭花》、《凝聚每份爱》等一系列脍炙人口的歌曲红遍大江南北，他就是——郁钧剑。     

《江苏林业科技》征稿简则

1《江苏林业科技》为向国内外公开发行的综合性的林业科学技术期刊。1974年创刊。为全国中文核心期刊、《中国学术期刊（光盘版）》入编期刊。本刊是CAB《Forestry Abstracts》、《Plant Breeding Abstracts》、《Horticultural Abstracts》，《中国林业文摘》，《中国农业文摘》，《全国报刊索引》，“中文科技期刊数据库”，“中国林业科技文献库”等国内外文摘类刊物和著名数据库固定收录的来源期刊，并加入“中国期刊网”，“万方数据——数字化期刊群”。连续4届荣获“江苏省优秀期刊”，     

唐雪薇：内容为主 执行制胜

北京和颂世纪文化传播有限公司成立于2010年，总部设在北京，最初以承接影视作品宣传工作起家，成功将中小影片如《我愿意IDO》、《北京遇上西雅图》、《激战》等影片营销成票房黑马，刺激了当时的电影市场，而后又接到如《西游降魔篇》、《狼图腾》、《天将雄师》等大片的邀约，强强联合为电影保驾护航。     

《绿色湖南建设纲要》系列解读

《绿色湖南建设纲要》（以下简称《纲要》）已经颁布实施，在全省广大人民群众中产生了重大的影响。为更好地贯彻落实《纲要》精神，把握其内容，本刊特与《纲要》起草小组联合策划三期，对《纲要》进行全面和系统的解读，以期深刻领会，真抓实干，全面推进绿色湖南建设。     

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.