云南臭参的研究现状和开发构想

介绍了有关臭参挥发性臭味的化学成分 ,臭参的化学成分、药效学和急性毒性动物实验、临床实验、营养成分测定、药理学研究等研究现状 .提出了科研及产品开发构想 .     

帽儿山森林生态系统蚯蚓区系组成研究

帽儿山林区蚯蚓种类较丰富，有2科6属8种，正蚓科的赤子爱胜蚓、粉正蚓及微小双胸蚓为优势种，从年龄结构上看，该地区蚯蚓种群属增长型，成蚓少于幼蚓，对林型系列研究表明白桦林的蚯蚓数量最少，对生态系列蚯蚓研究表明，蚯蚓生物量和个体密度随着地形坡位的升高而增大，热量因子对森林生态系统蚯蚓种群分布起着重要作用。     

祁连山森林健康保护与恢复策略

应用森林健康理论，分析得出威胁祁连山森林健康的主要自然灾害为病虫鼠害、雪折、风倒滑坡、气候干旱及森林组成和林分结构不合理；主要人为破坏活动为过度放牧、毁林开荒、乱砍滥樵、乱采道挖、乱捕滥猎等．提出了保护和恢复祁连山森林健康的策略：全程计划、加强预防、严格封锁、严密监测、科学防治、合理利用、大力建设、广泛合作．针对祁连山北坡森林类型，提出了相应的健康维护的技术措施．     

Historical review and redescription of three poorly known species of the catfish genus Trichomycterus from south-eastern Brazil (Siluriformes: Trichomycteridae)

ABSTRACT

This study is primarily directed to the most poorly known species of the genus Trichomycterus, comprising five nominal species (T. florensis, T. immaculatus, T. nigricans, T. paquequerensis and T. santaeritae) endemic to south-eastern Brazil. One of them, T. nigricans, is the type species of the genus, involved in taxonomic problems for over 150 years. A detailed historical review, accompanied by examination of type specimens and recent collections, revealed that the correct type locality of T. nigricans is in the vicinity of Rio de Janeiro, not Santa Catarina as commonly appears in the literature; specimens previously misidentified as T. nigricans from Santa Catarina belong to a possibly undescribed species of the genus Cambeva; T. paquequerensis is a synonym of T. immaculatus, and T. florensis is a synonym of T. santaeritae; and the hypothesis that T. santaeritae is closely related to the Amazon Sarcoglanidinae is refuted. The three valid species are redescribed. These species are members of a clade also including T. caipora that is highly supported by molecular data, diagnosed by a pronounced posterior maxillary process and caudal fin emarginate at least in larger specimens. A subclade comprising T. caipora, T. nigricans and T. santaeritae is diagnosed by a long maxilla and a bifid anterior extremity of hypobranchial 3.     

蜜环菌根朽病的化学防治

采用正交试验设计方法,将50%退菌特、80%杜邦万生、72%杜邦克露3种药剂用于20 a生红松人工林内蜜环菌根朽病防治试验.发病状况分为5个等级,对防治效果进行方差分析和统计假设差异性检验.结果表明:3种药剂之间无显著性差异,而与对照组比较差异显著.防治的经济效益十分显著,投入产出比达到1∶167.     

昆明西山林场5种可燃物的火行为研究

[目的]通过估测西山林场内主要可燃物特征,预测潜在的火行为大小,为西山林场的防火管理提供科学参考.[方法]通过外业调查,对柏木(Cupressus funebris)、旱冬瓜(Alnus nepalensis)、云南松(Pinus yunnanensis)、华山松(P.armandii)和麻栎(Quercus acut...     

贵阳二环林带种子植物区系研究

贵阳二环林带现有种子植物489种,隶属于107科334属.科级区系成分中,热带性质的占总科数(除世界分布科外)的64.79%,温带性质的科占32.39%,中国特有科占2.82%;属级区系成分中,有15种分布区类型和12种变型,其中热带分布133属,占总属数(除世界分布属外)的44.33%,温带分布共157属,占52.33%,中国特有7属,占2.33%.该区植物区系介于热带与温带之间,属亚热带区系性质.     

贵阳二环林带可持续经营措施

通过对二环林带建设目的、现状的分析,提出了二环林带接近自然林业的理论,进行可持续经营的思路,根据立地条件、区位及森林主体功能的发挥,将二环林带公益林细分为防护林、经果林、景观林和旅游开发林等四种森林类型,从森林保护、培育和发展角度对不同的森林类型采取不同的经营措施.