人工低产林改造对生态恢复区土壤理化性质的影响

为了解人工低产林改造对土壤理化性质的影响,于2010年9月-2011年8月对甘肃定西华家岭生态恢复区4个人工低产林改造后的混交林和1个杨树纯林、1个荒草坡对照点的土壤主要理化性质进行了研究.结果表明,杨树纯林的土壤有机质、总N和总P含量均处于较低水平,分别低于荒草坡10.98、0.78、0.10 g/kg;低产林改造后,土壤含水量、有机质和总N含量均有所升高,且随着改造时间的延长呈现出明显的增加趋势.改造8、18、25、31 a的混交林土壤含水量分别高出杨树纯林2.01、7.79、11.38、12.07个百分点,有机质含量分别高出2.96、15.23、20.80、24.96g/kg,总N含量分别高出0.41、1.02、1.48、1.96 g/kg;总P含量在改造初期有所增加,后期维持稳定,改造8、18、25 a的混交林总P含量分别高出杨树纯林0.02、0.06、0.10 g/kg,改造31a和25 a的混交林总P含量相等;低产林改造后土壤pH值略有降低.结果显示,人工低产林改造大大改善了该区土壤环境质量,有利于该区生态环境的恢复重建.     

森林资源清查中植被调查与统计技术研究

文章提出了利用森林资源连续清查固定样地进行植被种类和生物量调查的技术方法。此方法通过选择适当时间，提高调查者相关知识，确定样地数量等措施，可满足植物区系调查的要求，对于植被类型确定，植物蕴藏量统计，经济植物开发利用保护的决策，植被演替规律的观测具有实用价值。     

滇中高原区主要森林类型枯枝落叶层对降雨的截留功能

枯枝落叶层是森林植被对降雨再分配的第２作用层，也是对土壤发育具有重要影响的层次。在实测本区主要森林类型枯枝落叶量及其持水能力的基础上，采用１００ｍ２最大截留能力、１００ｇ枯枝落叶最大持水能力及最大持水率等指标对不同森林类型枯枝落叶量、组成及其发育情况进行了综合评价。     

浅谈湖南林业分类经营

本文通过对湖南林业经营现状进行了广泛调查研究,并结合湖南的省情特点,对实施林业分类经营的建设设想和面临的问题进行了探讨。     

Soil CO2 evolution from Korean pine virgin forest at Changbai Mountain

The soil CO₂ evolution rate was measured in a virgin Korean pine forest. The results in June showed that the lowest value of evolution rate was 220 mg/(m²·h) and appeared at 6:00 a.m. The highest value was 460 mg/(m²·h) at 18:00. The rates of CO₂ evolution were related with soil temperature. On the basis of the constructed regression equation and the monthly average values of temperature, the magnitude of CO₂ evolution from Korean pine forest soil was 10.4 t/hm² during a growing season. This project was funded by the Opened Research Station of Changbai Mountain Forest Ecosystem, Chinese Academy of Sciences. Responsible editor: Zhu Hong     

在林权登记中利用Excel数据批量制作Word文档技巧

在集体林权制度改革中,为了提高《林权登记申请表》制作效率和质量,探索出利用Word＂邮件合并＂功能引用已有的Excel林权登记数据批量制作文档的方法,可以加快工作速度,提高工作质量。这种方法可广泛应用于利用Excel数据批量制作统一格式Word文档的工作。     

Why Is Non-Timber Forest Product Harvesting an “Issue”?

Summary

Despite an encouraging trend in North America of growing interest across a range of disciplines in non-timber forest products (e.g., this volume), NTFP harvesters' knowledge and practices continue to be poorly understood and undervalued, if not ignored, both by research scientists and forestland policy-makers and managers. This article explores why NTFP harvesting suddenly emerged in North America as an “issue” in the early 1990s. Drawing from a three-year study of chanterelle mushroom harvesters on the Olympic Peninsula Biosphere Reserve (Washington, USA), we discuss a variety of forces which intersected in this period to bring NTFP harvesting to wider attention. Unfortunately, harvesters continue to be excluded as knowledgeable actors in, if not legitimate co-managers of, temperate forest ecosystems, resulting in both passive and active harvester resistance to research and management, a devaluing of local harvesting traditions, and missed opportunities for collaboration. We reluctantly conclude that despite “New Forestry” co-management rhetoric, given existing institutional barriers and positivist scientific categories, NTFP workers will likely remain excluded from active roles in temperate forest research and management-contributing in turn to the ongoing legitimacy crisis of public and private forest management entities.     

Information and Training Needs of Non-Timber Forest Products' Operators in Southern Nigeria

Abstract

This study examined the training needs of non-timber forest products' (NTFP) operators in Southern Nigeria. One hundred-fifty forest operators in Ondo State, Nigeria were sampled using structured questionnaire. Data collected was analyzed using percentages, mean, Chi-square test, and Pearson Product Moment Correlation. The results revealed that majority of the forest operators in Southern Nigeria are middle-aged women with low level of education. The need for training is high and significant (P < 0.05), and there is a positive relationship between training/ information received and the operators's productivity.     

在林业计算机制图中运用FontCreator软件制作点状图符号的方法

以LY／T2009—2012（（县级林地保护利用规划制图规范》中所示的点状符号制作为例，从创建符号文件、添加编辑符号文件、保存安装符号文件、使用符号文件等方面阐述FontCreator软件在地图符号制作中的应用，认为FontCreator软件制作专题图符简便、快捷，图符清晰规范，符合要求。     

全国森林公安机关数字文献资源应用及共享需求调查分析

采用调查问卷方式,对全国森林公安数字文献资源应用现状及共享需求进行调查,对回收的数据做统计分析和归纳总结认为:在森林公安机关单位,虽然互联网数字资源的应用日趋明显,但传统纸质文献的运用还相当普遍;对数字资源的使用还有一定局限,获取渠道比较单一;在数字文献资源的建设和应用上还存在资金、人才、设施等诸多困难.为此,需进一步加大宣传普及力度,统一规划,多方努力,共同挖掘潜力,建立和完善共享机制.