寻觅红木十大路线图

广东：东莞大岭山、顺德龙江、中山大涌、广州鱼珠木材市场、深圳观澜；广西：防城港东兴、凭祥；云南：德宏州瑞丽、西双版纳景洪；福建：仙游、莆田；浙江：义乌、东阳；江苏：南通、苏州：山东：潍坊、临沂；湖南：株洲：甘肃：天水；湖北：红安；河产：大城、香河；北京：潘家园、小武基、十里河；天津：沈阳道：山西：运城；东北：大连、长春、新滨；陕西：咸阳；木材进口口岸：广州、张家港、塘沽、湛江。     

刊中报

科学家试解月球形状之谜；千奇百怪的火山；世界十大河流面临严重危险；国家投1516亿建西部十大工程；李士生说字；联中桃花占春光；宋代诗词说赏花；热浆驮着西藏漂；成语中的物理知识。     

杨树间伐与修枝技术三字经

栽杨树．效益高；生长快．材质好；适应广．易营造；其用材．受益早；防护林．快且牢；平原区．尤重要。现有林．多粗糙；中幼林．尚未老；可间伐．以增效；需修枝．出材高。新技术．宜学牢；编以歌．供参考。     

松材线虫病防治三字经

松线虫．危害重；不防治．松林空；其为害．号松癌；致病强．枯死快；树感病．人悲哀；无法治．实无奈。从感染．至枯死；四十天．已算迟；一片林．被侵掠；次第死．不间歇；自发生．到毁灭；三五年．即解决；对林农．收入绝；对生态．是浩劫。     

常见树木野外识别歌诀

山中一老者，衣衫常不完；躬耕以自乐，不问世长短；辛勤无此比，却有好容颜；我欲观其人，披露入山峦；槐横荒径沿，云宿槐庵端；知我故来意，取果让我啖；所见均不识，自谓山中产；只怪风味别，风卷云已残；我意犹未了，抱愧问其源；老者朗声笑，侃侃与我谈；世间多奇物，遍地是资源；可惜人不识，俗物迷其眼；不解真滋味，盲然而求远；善鼠非好猫，无钱我心闲；蓦然回首时，千年一挥间；今授君一法，山中识珍馔。     

短波

怀化市大力营造工业原料林；开展承建地林业发展调研工作；北京市西城区人民法院新增专项职能；唐山造林绿化成效显著；对“林参间作”用地进行“GPS”定位；远安首批森林管护技师上岗护林；永修县启动“飞鹰行动”；信阳市最大花卉市场开业。     

短波

巢湖市林业系统开展“争先创优”活动；三门峡市加快矿区生态修复；壶关县实施生物防火成效显著；丰台年内建成生态休闲旅游区；东海投10亿元打造生态公路；罕见“水中大熊猫”显形；可克达拉农场生态建设渐入佳境；普及太阳能，建设生态文明新村     

云南省集体林权制度改革调研报告

云南省林权改革取得了阶段性成效，其主要经验是：领导重视，高位推动；健全机构、充实人员；积极稳妥，分步实措；抓好试点，积累经验；部门配合，加强宣传；依法操作，民主决策；配套改革等。改革中有待进一步研究探讨的问题：山林纠纷与历史遗留问题；天保工程中的问题；公益林区划与补偿；自然保护区问题；移民问题等。针对问题提出了6点建议。     

新技术 新产品

QFJ纤维超细剪磨机；环保防锈油；天然气压缩机；氧化铝新产品超活性α-Al2O3；再生环保可循环纱线；酚醛树脂KSF-1.     

林业大事记（2009年3月）

国家林业局来湘调研林业信息化工作；省林业厅召开深入学习实践科学发展观活动总结大会；省政府新闻办召开林业建设成果新闻发布会；徐明华副省长考察衡阳林业；省绿化委员会召开第22次全会；邓三龙厅长接受新闻媒体采访；“树立信心春绿两型”大型公益植树活动启动；     

Measurement of the dynamic modulus of elasticity of wood panels

This study investigated the dynamic modulus of elasticity (DMOE) of wood panels of Fraxinus mandshurica, Pinus koraiensis, and Juglans mandshurica using the natural frequency measurement system of fast Fourier transform (FFT). The results were compared with the static modulus of elasticity (E _S) tested by a mechanical test machine. The results show a significant correlation between E _S, transverse vibration DMOE (E _F), and longitudinal vibration DMOE (E _L). For all of these species, the correlation between E _S, E _F and E _L is more significant than the individual species, which indicated that the FFT method is universal. The correlations between E _S and sample’s density (ρ) are significant, but the correlation coefficient of E _S and ρ is lower than those between E _F, E _L and E _S. The E _S of wood is more accurately tested by the analysis based on FFT measurement than by the estimation based on density. __________ Translated from Scientia Silvae Sinicae, 2005, 41(6): 126–131 [译自: 林业科学, 2005, 41(6): 126–131]     

Effects of flooding on growth of seedlings of woody riparian species

The effects of flooding on growth of seedlings were compared over a 7-month period (April–November) among six different woody species: Aesculus turbinata, Cercidiphyllum japonicum, Fraxinus platypoda, Pterocarya rhoifolia, Pterostyrax hispida, and Quercus mongolica var. grosseserrata. Flooding reduced the shoot length of F. platypoda, P. rhoifolia, C. japonicum, P. hispida, and Q. mongolica var. grosseserrata seedlings but did not affect that of A. turbinata seedlings. Among control seedlings, shoot elongation occurred once in A. turbinata and twice in F. platypoda and Q. mongolica var. grosseserrata; the other species continued to grow from April to August. Among the flooded plants of all species, shoot elongation occurred only once at the beginning of the growing season. On August 25, flooding significantly reduced the number of developed leaves as compared with control plants except for A. turbinata. In the flooded plants except for F. platypoda, leaf fall began on June 30; in controls, by contrast, the number of developed leaves increased until August 25. Flooding reduced the total dry weight increment in all species. The survival ratio of flooded plants after the experiment differed with species. All of the F. platypoda and A. turbinata seedlings survived the flooding treatment, while only 20% of P. hispida and 30% of Q. mongolica var. grosseserrata survived. Flooding seriously affected the growth of riparian pioneer species including P. rhoifolia, C. japonicum, P. hispida, and Q. mongolica var. grosseserrata. The effects of flooding on growth of the seedlings differed with the tree species because of differences in leaf-emergence pattern and physiological flood tolerance. The responses of tree seedlings to flooding reflected species habitats and growth patterns.     

黄河小浪底库区山地栓皮栎人工林土壤呼吸的季节动态

[目的]分离并量化土壤自养呼吸和异养呼吸,探讨各自贡献率及其随季节变化的动态特征。[方法]采用壕沟法和气体红外分析法,研究黄河小浪底库区山地栓皮栎人工林土壤总呼吸、自养呼吸和异养呼吸速率的季节动态变化、贡献率和环境影响因子。[结果]表明:栓皮栎人工林总土壤呼吸、自养呼吸和异养呼吸均呈夏季速率高、冬季速率低。栓皮栎土壤总呼吸、自养呼吸及异养呼吸速率与5 cm土壤温度均呈极显著指数相关,温度敏感性系数Q_(10)值大小为自养呼吸(3.40)异养呼吸(2.90)土壤总呼吸(2.45);栓皮栎土壤总呼吸、自养呼吸、异养呼吸速率与0 10 cm土壤体积含水量均显著线性相关;土壤总呼吸、自养呼吸速率与0 10 cm土壤电导率显著相关。土壤总呼吸和异养呼吸的温度敏感系数Q_(10)值均在冬季最大,夏秋季最小;而自养呼吸的Q_(10)值则呈相反的变化趋势。栓皮栎人工林自养呼吸和异养呼吸对土壤总呼吸的月贡献率为13.23%37.33%和62.67%86.76%,且自养呼吸的贡献率与土壤温度的季节变化规律相似。土壤总呼吸、异养呼吸与自养呼吸的CO2年通量分别为1 616.41、1 199.39、417.02 g·m~(-2)·a~(-1)。[结论]经过区分与定量化土壤总呼吸及其组分,确定异养呼吸为本研究区栓皮栎人工林土壤总呼吸的主要组分,作用于异养呼吸的生物与非生物因子均能显著影响整个森林生态系统表层CO_2总排放通量的大小,进一步为该研究区森林生态系统碳循环与能量流动的进一步量化研究提供参考。     

CONTROL TECHNIQUE OF BACTERIAL CANKER OF POPLAR

The poplar bacterial canker caused by Erwinia sp is a serious disease spreading inmost parts of Northeast China,where poplars are cultivalted.The disease seriously infects thosepoplars belonging to section Aigeiros or the intersection hybrids of section Tacamahaca and section Aigeiros and their clones.Five fine poplar cultivars resistant to the bacterial canker have been ob-tained by screening tests.They are Lz_2(Populus simonii×nigra var.italica),A_(15)(P.×sp.)613(P.×sp.),A_(102)and A_(98)(P.simonii×sp.)T following chemicals are obviously effective,such as:50％DT germicide ,40％ XF-136 and 10％ C.C.M.A.or 12.5％ ramphencol and 50,000 ppm/mlvalidamycin,with which the stems or roots can be watered.     

Technologies of liquefaction of bamboo and preparation of adhesive

The technology of liquefying processed-waste bamboo with phenol is investigated by single factor trials and an orthogonal design. We studied the preparation technology and properties of adhesives from this phenol-liquefied bamboo with formaldehyde (BPF). The results show that temperature has a significant effect on liquefaction. The effect of the mass ratio of phenol to bamboo comes second and the catalyst dosage within the range of 2%–4% is the least effective. The optimum conditions of liquefaction are as follows: a mass ratio of phenol to bamboo 3.5, a catalyst dosage of 4%, liquefying temperature 145°C and liquefying time 60 min. The liquefaction rate of bamboo reached 99.1%. For the preparation of the adhesive, a mass ratio of liquefied bamboo products to formaldehyde (37%) is 100 to 164.8–199.5, while the ratio 100 to 108.2 is the best. This adhesive has a lower curing temperature than that of normal PF resin. At a hot-press temperature of 130 or 140°C, this new adhesive provides excellent bonding strength of plywood. The most favorable temperature for hot-pressing is 140°C. __________ Translated from Chemistry and Industry of Forest Products, 2007, 27(6): 65–70 [译自: 林产化学与工业]     

大花葵花色苷抑菌功能研究

本项研究通过采用固体培养和液体培养的试验方法,进行大花葵花(Malvasylvestris)色苷对金黄色葡萄球菌、大肠杆菌和黑曲霉的抑菌试验。结果表明:大花葵花色苷对金黄色葡萄球菌有很强的抑制作用,而对大肠杆菌和黑曲霉没有抑制现象发生。在固体培养试验中大花葵花色苷随着浓度的增加,对金黄色葡萄球菌的抑制程度越大,当大花葵花色苷浓度为10g/L时抑菌圈平均直径为6mm,当浓度增加至30g/L时,抑菌圈平均直径为16mm。而且,高浓度的大花葵花色苷溶液对金黄色葡萄球菌有长时间的抑制作用。     

落叶松水浸液对胡桃楸幼苗生长的影响

A study was conducted to detect the effect of water extracts from different parts such as root, bark, branch and leaf, of adult larch, Larix gmelini, trees on growth of Manchurian walnut, Juglans mandshudca, seedlings and the allelopathy between the two tree species. Four concentrations （100 g. kg i, 50 g. kg^-1, 25 g. kg^-1 and 12.5 g. kg^-1） were prepared for each kind of extracts. Result showed that the water extracts with low and moderate concentrations accelerated the growth of collar diameter and increased biomass and root/shoot ratio of walnut seedlings. The water extracts from branches and barks with low and moderate concentrations accelerated the height growth of the seedlings, while those from leaves and roots slightly decreased the height growth of seedlings. The fact that application of water extracts of larch improved the growth of Manchurian walnut attributes possibly to the allelopathy between the two tree species.     

Intestinal absorption of forsythoside A in different compositions of Shuang-Huang-Lian

Shuang-Huang-Lian (SHL), a traditional Chinese formula containing Lonicerae japonicae flos (LJF), Scutellariae radix (SR) and Forsythiae fructus (FF), is commonly used to treat acute upper respiratory tract infection, acute bronchitis and light pneumonia. Forsythoside A is one of the main active ingredients in Forsythiae fructus, a key herb in SHL. In the present study, effects of different compositions in SHL on the intestinal absorption of forsythoside A were investigated. The observations from in situ intestinal circulation model showed that A/%(h^− 1) of forsythoside A in FF + LSF, FF + SR and SHL were all reduced greatly compared with that in FF. However, in pharmacokinetics study, C_max and AUC_0 → 1440 of forsythoside A all increased and T_1/2 prolonged in SHL, FF + LJF and FF + SR compared with FF. The results indicated that the different compositions of SHL decreased absorption but increased bioavailability of forsythoside A, which may be related to its metabolism inhibited in intestine or liver.     

杨树PtRRI基因的组织特异性表达模式分析

[目的]模式植物在木本植物中鉴定的许多重要调控因子家族在木本植物中出现了基因家族成员扩张,但ARRs家族作为细胞分裂素响应调节因子在杨树基因组中成员数量反而减少,其在木本植物中如何行使功能需要进一步研究。[方法]本研究通过生物信息学构建PtRRI启动子与GUS融合表达载体,检测植物激素处理后PtRRI表达量和检测PPtRRI::GUS转基因植株在生根过程中GUS信号等方法,对杨树PtRRI基因的组织特异性表达模式进行分析。[结果]表明:PtRRI在杨树根部、形成层、木质部表达量相对较高,PtRRI转录受6-BA激素诱导,与其在不定根发育过程中激素调控下的表达相一致。[结论]PtRRI基因可能参与杨树的次级生长。     

Effects of quenching on relaxation properties of wet wood

A new relaxation property is discussed on the basis of creep behavior of wet wood specimens pretreated with heating at various temperatures followed by quenching. The treated samples showed more marked relaxation than that of an untreated sample. The relationship between relaxation time and heating history was represented by an equation ln() = –( _f – k ₁)T + [ln( _g) + k ₂], where ln() is the logarithmic relaxation time of wet samples after quenching, T is the difference between the heating temperature and the glass transition temperature (T _g), ln( _g) is the logarithmic relaxation time at T _g, is a constant, _f is the coefficient of thermal bulk expansion, and k ₁ and k ₂ are constants. It was concluded from the analysis of experimental results that the change in the relaxation property caused by heating and the following quenching is due to the temporary free volume created by freezing of molecular chain motion of wood components, most probably lignin, during quenching.This work was presented at the 52nd Annual Meeting of Japan Wood Research Society, Gifu, April 2002