成都市城市森林规划(纲要)

以建设国家森林城市为契机,坚持城乡一体化发展,建立布局合理、绿量充足、生物多样、景观优美、特色鲜明、功能完善的城市森林生态系统,把成都建设成为"创业环境最优、人居环境最佳,综合竞争力最强"的中国中西部特大中心城市和森林生态城市。并将城市森林建设纳入修编的《成都历史文化名城保护规划》和《成都市城市总体规划》。       

Needle blight caused by Dothistroma pini in Slovakia: distribution,host range and mating types

Dothistroma needle blight (DNB) has been observed in Slovakia during the last two decades. Up until 2017, Dothistroma septosporum has only been detected and molecularly confirmed to cause DNB in Slovakia. Here, we report the detection of Dothistroma pini at six localities around Slovakia, representing different plantation types. Four pine species (Pinus sylvestris, P. nigra, P. mugo and P. jeffreyi) were confirmed as hosts of D. pini in Slovakia, of which only P. mugo has been previously reported as host in Slovakia. Three gene regions (ITS, EF1 –α, and ß-tubulin) of each of the 13 isolates were sequenced and assigned as D. pini. Based on ITS sequences, the studied isolates represent the haplotypes Dp_HAP.1, Dp_HAP.2. Both mating types were detected but at different localities. Our results suggest that in addition to D. septosporum, D. pini may contribute to DNB also in Slovakia.     

Decolorization of kraft pulp bleaching effluent by a newly isolated fungus, Geotrichum candidum Dec 1

Kraft pulp bleaching effluent supplemented with glucose was decolorized by a newly isolated fungusGeotrichum candidum Dec 1 (Dec 1) that showed a wide decolorizing spectrum to synthetic dyes. When the glucose concentration in the effluent was 30 g/l, the color removal and the reduction of absorbable organic halogens were 78% and 43% after 7 days culture, respectively. The average molecular weight of colored substances measured by gel filtration chromatography was lowered to less than 3000 from 5600 after 7 days culture. As the contribution of extracellular enzymes such as peroxidase (DyP), manganese peroxidase, and laccase to the decolorization of the kraft pulp bleaching effluent was small, Dec 1 appears to have a different mechanism of decolorizing kraft pulp bleaching effluent when compared with enzymes used to decolorize synthetic dyes.     

茴香脑衍生物的合成工艺研究

以茴香脑为原料经H2O:氧化合成茴香脑环氧化物2-(4-甲氧基苯基)-3-甲基环氧乙烷,产率91%,并研究了溶剂配比、物料配比、催化剂用量、反应温度、反应时间等因素对产物产率的影响.实验结果表明:乙腈与甲醇体积比为1:5、茴香脑与H2O2的物质的量之比为1:2.5、原料与无水碳酸钠的物质的量之比为1:0.8、反应时间为...     

Kaurane-type diterpenoids from Chromoleana odorata, their X-ray diffraction studies and potent α-glucosidase inhibition of 16-kauren-19-oic acid

A new diterpenoid, 15-angeloyloxy-16,17-epoxy-19-kauronic acid (1), along with five known metabolites, 16-kauren-19-oic acid (2), 6′-hydroxy-2′,3′,4,4′-tetramethoxychalcone (3), isosakuranetin (4), acacetin (5), and kaempferide (6) was isolated from the organic extracts of the roots of Chromoleana odorata. Their structures were determined by spectroscopic evidences. The structures of 1 and 2 were further confirmed by single-crystal X-ray diffraction studies. Compound 2 exhibited significant α-glucosidase inhibitory and antibacterial activities against Escherichia coli and Bacillus subtilis.     

基于鸡西市第一中学新校区规划建设的思考

在鸡西市第一中学建设新校区的规划设计中,通过对总体布局、交通组织、场区竖向、运动场地及校园绿化等方面做详细的设计思考后再进行规划设计,使其设计效果和使用功能都达到了国家级示范高中的标准,推动了教育改革向更深层次发展。     

建设绿色城市 打造生态合肥

论坛会上有20多位市长参加经验交流,其中贵阳、邯郸、吉林、兰州、大连、合肥、乐山等7市长作了专题报告。贵阳市的经验已经在《中国城市林业》2004(5)期上全文刊登。今年本刊特设"市长论坛"。本期发表了合肥、吉林、大连三市市长文章,其余市长报告将陆续发表。       

沿海防护林体系建设

大连海岸线长达1906km,占辽宁省海岸线总长度的73%,约占全国海岸线总长度的10%。其中陆地海岸线1288km,海岛岸线618km。       

海湾新绿——大连造林绿化掠影

天净沙落,碧海晴空,绿树芳草,雪浪白鸥。今天的大连以其独特的风格和骄人的业绩,荣获了"国家环保城市"、"国家级园林城市"、"亚太地区环境整治模范城市"、"全球生态环境500佳城市"等殊荣,并被联合国授予"人居奖"。