Strategies on natural forest protection of collective forest area in minority nationality community in China

In the recent 20 years, it is a trend that forest will be distributed to villagers to manage in the world. Also in China, “forestry three determinations” has been carried out since 1980, and many new forestry devolutions have been put forward to and come into being. To face the fact of overusing up natural forest to result in the deterioration of ecology environment, the strategy of natural forest protection project (NFPP) is raised after the heavy flood in 1998. Now, it is paid close attention to systematically study to carry out the strategies of NFPP in collective forest area, especially in the community of minority nationalities. Based on the case of forest resource management in Datu Miao Village, the experience of its forest management in the past is analyzed and the strategies of NFPP in collective forest area are put forward. Foundation item: This project is a part of research project “forest devolution management of IFAD/CIFOR” Biography: L{upuo} Ming-can (1961-), maie, associate professor, vice director of post-graduate school of Southwest Forestry College, Kunming 650224, P.R. China. Responsible editor: Song Funan     

弋阳县森林资源可持续发展的探讨

林业是我国国民经济的重要组成部分,笔者对弋阳县森林资源现状进行多方面的分析和评价,提出森林资源可持续发展对策。     

营造速生丰产林机械化的研讨

从我国的国情出发，对目前营造生丰产林尚缺乏适用的机器品种的状况进行了分析，指责若要适应大面积营造速生产丰产林的发展，实现机械化是当务之急。根据速生丰产林营造工艺要求。研究并提出了林地清理，整地，植苗造林，除草松土，林地施肥，灌溉和抚育间伐等主要作业工序所需要的机器选型方案和新机器的研究方向。     

陕西森林火灾的发生趋势及预测方法探讨

探讨了Ｍａｒｋｏｖ转移矩阵和ＧＭ（１，１）灰色模型预测陕西森林火灾趋势的方法。并预测２０００年前，森林火灾基本处于Ｂ级稳定状态，最小级Ａ出现于１９９８年，最大级Ｃ可能出现于２０００年。     

汕头中山公园的保护与发展初探

中山公园是汕头市历史最悠久的综合性公园,公园古树名木苍翠,植物品种丰富;名胜古迹众多,文化底蕴深厚;四周环水,区位环境得天独厚.要保护和发展汕头中山公园,必须解决公园基础设施老化,配套不完善;植物景观比较单一,养护管理比较粗放;历史文化古迹保护力度不够;公园技术管理队伍老化和断层;公园保护资金入不敷出等问题.提出只有开拓创新,充分发掘公园的历史文化内涵,传承地域文化,保障维护资金才能实现公园的可持续发展.     

虫粪在森林昆虫识别中的应用初探

在较高大树木上危害的森林昆虫,当其种群的密度不是很高,或种群未处于大量取食的虫态(一般为末龄幼虫)时,往往不易被发现。大量取食后不久,种群突然消失,只留下一些危害过的痕迹。危害痕迹中寄主林木被害状能提供的信息极有限,害虫的头壳也很难找到,而虫粪却易于发现且能提供较多的信息,成为确定害虫种类的线索。国外已有不少文献肯定了虫粪对于识别虫种的辅助作用,还编制了若干种森林害虫的虫粪检索表。国内仅对马尾松毛虫虫粪在监测其幼虫种群数量方面作过较详细的研究,尚未见到用虫粪识别虫种方面的研究。     

互助北山林区物候探讨

青海互助北山林区和中国大部分北方林区类似,通过对这个地区物候现象的观测记载,发现本区最适宜的农林生产作业时间,更好指导本区农林业生产。     

Responses of Chilean forest birds to anthropogenic habitat fragmentation across spatial scales

Although it is recognized that anthropogenic forest fragmentation affects habitat use by organisms across multiple spatial scales, there is uncertainty about these effects. We used a hierarchical sampling design spanning three spatial scales of habitat variability (landscape > patch > within-patch) and generalized mixed-effect models to assess the scale-dependent responses of bird species to fragmentation in temperate forests of southern Chile. The abundances of nine of 20 bird species were affected by interactions across spatial scales. These interactions resulted in a limited effect of within-patch habitat structure on the abundance of birds in landscapes with low forest cover, suggesting that suitable local habitats, such as sites with dense understory cover or large trees, are underutilized or remain unused in highly fragmented landscapes. Habitat specialists and cavity-nesters, such as tree-trunk foragers and tapaculos, were most likely to exhibit interactions across spatial scales. Because providing additional sites with dense understory vegetation or large habitat trees does not compensate the negative effect of the loss of forest area on bird species, conservation strategies should ensure the retention of native forest patches in the mixed-use landscapes.     

植物景观设计与项目运作的新启示——以两河公园树花园为例

本文通过对2005年ASLA获奖作品两河公园树木园的解读,介绍了该项目独特的植物种植规划设计。通过一些数理关系,如细胞自动分布规律和斐波纳契数比例等模式组织植物种植,并将植物材料作为一种空间界定的手段。该项目的成功是行政部门、社会团体等多方面共同努力的结果,在项目开发及运作模式上具有较高的借鉴意义。     

云南林木真菌病害研究(Ⅰ)

 报道了云南林木真菌病害23种,其中:国内新记录4种,云南省内新记录11种,云南省内已知种新分布8种.前者有描述,其余以名录列后,拟供植保和植检工作参考.