罗平万峰山自然保护区的景观旅游资源及开展生态旅游设想

介绍了罗平万峰山自然保护区的实验区及其周边丰富的景观资源，分析了保护区开展生态旅游的有利条件，并提出了开展生态旅游的设想。     

浅议大兴安岭国有企业改革与发展

内论述了要使大兴安岭国企走出困境，实现企业的发展，就要走一条企业改革之路：①实现政企分开；②积极推进企业生产组织方式调整及资产优化；③推进企业技术创新和产业升级；④加强管理；⑤做好转产分流和社会保障工作。     

浙江凤阳山－百山祖自然保护区综合考察报告

１９８０年以来，对浙江凤阳山－百山祖自然保护区先后３次考察，揭示了这一自然保护区生物资源一些特点，即生物群落地带的特殊性、生物区系成分的古老性、生物物种的多样性、珍稀动植物种类的丰富、森林植被垂直分布系列的完整，本区又是一些植物的分化和变异中心，是一处十分难得的森林生态和生物多样性自然保护区，同时又介绍了保护区建立前后所开展的一些科研活动。     

Cohabitation of tree holes by ants and breeding birds in a temperate deciduous forest

A previously unknown association of ants with birds breeding in tree holes is described. Ants Lasius brunneus Latreille (Hymenoptera: Formicidae) were found in c. 15% of nests of Parus major L. and Poecile palustris L. (Paridae) breeding in tree holes in the primeval deciduous forest located in the Bia?owie?a National Park (Poland). The ants preferably used holes located higher above the ground. As such holes are warmer than the unused holes or other nest sites, it is suggested that the ants cohabit holes utilized by the tits to gain thermal benefits.     

轿子山自然保护区植被类型及其保护价值评价

依据《云南植被》编目系统，将轿子山自然保护区的植被划分为7个植被型，9个植被亚型，16个群系，20个群落，并对各植被类型的保护价值进行了数量化评价，在此基础上对保护价值较高的急尖长苞冷杉林、野八角一乳状石栎林、杜鹃矮林、杜鹃灌丛和元江栲林、高山柏灌丛等6个主要植被类型进行了评价。     

Wolves, elk, willows, and trophic cascades in the upper Gallatin Range of Southwestern Montana, USA

We summarized the status of wolves (Canis lupus), elk (Cervis elaphus), and woody browse conditions during the 20th century for the upper Gallatin elk winter range in southwestern Montana, USA. During this period, wolves were present until about the mid-1920s, absent for seven decades, and then returned to the basin in 1996. A chronosequence of photographs, historical reports, and studies indicated willows (Salix spp.) along streams became heavily browsed and eventually suppressed following the removal of wolves, apparently due to unimpeded browsing by elk. However, after wolf establishment in 1996, browsing intensity on willows lessened in some areas and we hypothesized that, at both a landscape and fine scale, browsing pressure reflects terrain configurations influencing predation risk (nonlethal effects), in conjunction with lower elk densities (lethal effects). We measured browsing intensity and heights of Booth willow (S. boothii) along 3000 m reaches of the Gallatin River and a tributary to examine the potential influence of wolf/elk interactions upon willow growth. Where the Gallatin Valley is relatively narrow (high predation risk), willows began releasing in 1999 and by 2002 were relatively tall (150–250 cm). In contrast, willow heights along a wider portion of the Gallatin Valley, along the open landscape of the tributary, and an upland site (all low predation risk) generally remained low (<80 cm). We identified terrain and other features that may contribute to the perceived risk of wolf predation, by elk for a given site. Although alternative mechanisms are discussed, changes in willow communities over time following wolf removal and their subsequent reintroduction were consistent with a top-down trophic cascade model involving nonlethal and possibly lethal effects. If similar top-down effects upon vegetation hold true in other regions of North America and other parts of the world where wolves have been extirpated, wolf recovery may represent a management option for helping to restore riparian plant communities and conserve biodiversity.     

安徽敬亭山国家森林公园开发利用探讨

敬亭山国家森林公园具有森林景观丰富多彩 ;历史文化底蕴丰厚 ;双塔辉映、古朴典雅等旅游资源特色 ,是集森林公园、风景名胜区和城市公园于一身的综合型公园 ,具有极强的竞争力和美好的发展前景。提出将公园划分为游览区、游乐区及管理服务区等功能分区的开发建设构想 ,并提出开展特色旅游等开发利用建议。     

中国的竹景观资源

竹景观是一种特殊的景观资源，由竹的自然景观和竹的人文景观构成。竹的自然景观主要包括风景竹林景观、专类竹园景观、庭园竹景观和盆景竹景观；竹的人文景观主要由竹建筑景观、竹制器具、竹工艺品、竹食品、竹民俗和竹文化博览等组成。     

白水江自然保护区麦吊云杉群落类型与垂直格局初步分析

麦吊云杉(Picea brachytyla)为我国二级重点保护植物,也是甘肃白水江国家级自然保护区针阔混交林带(2 100~2 900 m)主要的建群种之一。以第3次大熊猫调查植被数据为基础,以树种重要值为指标,分析了白水江保护区麦吊云杉群落的结构特征。结果表明:该保护区麦吊云杉群落按乔木重要值的大小可划分为10个亚群系,其中与糙皮桦(Betula utilis)和红桦(Betula albo-sinensis)形成的混交林分布最广;麦吊云杉的主要伴生树种为糙皮桦和红桦,其次为铁杉(Tsuga chinensis)、岷江冷杉(Abies chensiensis)、五裂槭(A-cer oliverianum)、泡花树(Meliosma dilleniifolia)、华山松(Pinus armandi)等;麦吊云杉群落从低海拔向高海拔的递变规律是由与温性针阔叶树种华山松、铁杉、糙皮桦、红桦等组成的亚群系向与寒温性针叶树冷杉等形成亚群系递变。     

朱家山自然保护区生态评价

朱家山自然保护区位于贵州省黔南州瓮安县，1998年对保护区进行了综合考察。其生态评价为：丰富的生物多样性；珍稀动植物的荟萃地；罕见的固体水库；泥沙及坡积物的潜在产出区；动植物区系的过渡区域；各演替阶段并存的森林群落；科研教学的理想场所。并对今后开发提出了建议。