浅谈林区公路建设与生态环境保护     

薄韬  卢丙发  范旭辉 《林业科技情报》2008,40(2):112-113

概述了林区公路建设对生态环境的影响,并就在林区公路建设中实施生态环境保护,提出了若干建议。  相似文献   

Integrating landscape connectivity in broad-scale forest planning through a new graph-based habitat availability methodology: application to capercaillie (Tetrao urogallus) in Catalonia (NE Spain)   总被引：1，自引：0，他引：1  

Lucía Pascual-Hortal  Santiago Saura 《European Journal of Forest Research》2008,127(1):23-31

The loss of connectivity of forest landscapes is seriously hindering dispersal of many forest-dwelling species, which may be critical for their viability and conservation. In this context, explicitly incorporating connectivity considerations is an important challenge in current forest planning and management, but as yet there is a lack of operative methods for appropriate decision making in this respect. We describe a new methodology based on graph structures and a habitat availability index (integral index of connectivity) that integrates forest attributes (like habitat quality) and network connectivity in a single measure. We apply this methodology to examine the connectivity of the highly fragmented habitat of capercaillie (Tetrao urogallus) in Catalonia (NE Spain), where the threatened status of this forest bird species calls for landscape-level forest planning solutions. We analyse data on the distribution of capercaillie forest habitat at 1 km spatial resolution obtained from the recent Catalan Breeding Bird Atlas. We determine the functionally connected regions existing within its habitat distribution and identify the forest habitat areas that are more important for the maintenance of overall landscape connectivity for this species. Based on these results, we provide recommendations on certain critical public forests where management oriented to the conservation of capercaillie habitat is more necessary. These results highlight the potential and practical interest of the proposed methodology for successfully integrating landscape connectivity in broad scale forest planning.  相似文献   

浅议生态林业城镇建设   总被引：2，自引：0，他引：2  

王天禹  尹鸿玉 《林业科技情报》2008,40(4):66-67

林业城镇是我国小城镇中一类特殊群体,属于资源型城镇。在林业资源转型的背景下,林业城镇建设也面临着许多新的选择和问题,生态林业城镇建设成为现代林业城镇可持续发展的必然选择．本文结合林业城镇的自身特性,探讨了生态林业城镇和现代林业城镇的关系、生态林业城镇的内涵和建设生态林业城镇的途径。  相似文献   

谈如何抓好公路路面工程管理与质量管理     

王树林  倪松立  杨艳丰 《林业科技情报》2008,40(4):78-79

认真执行操作规程,实施规范化、制度化的质量管理。建立完善的质量保证体系,并且强化质量检测手段,要把施工管理重点放到第一线,特别是抓好工序管理,坚持质量检查制度,增强职工的质量意识。  相似文献   

三明市林业产业建设探讨   总被引：1，自引：0，他引：1  

庄丽 《林业调查规划》2008,33(5)

三明市是我国林业产业相对比较发达的地区之一.文章在分析三明市林业产业发展的优势、潜力及制约因素的基础上,提出了三明市发展林产工业、生物医药产业和林业特色产业的建议以及破解制约林业产业发展因素的相关措施.  相似文献   

林业科技成果转化的瓶颈与对策   总被引：2，自引：0，他引：2  

夏辛畅 《林业调查规划》2008,33(5)

林业科技成果转化为现实生产力是一个十分复杂的社会过程,政府的政策导向、资金扶持、成果质量、林农的文化素质和林业整体环境对其均有着重要影响.文章通过分析制约林业科技成果转化的瓶颈,提出了加强政策宣传,加大政府资金投入,面向生产和市场,提高成果质量,建立健全推广机构与网络等促进成果转化的有效措施与对策.  相似文献   

Investigations concerning the role of Chalara fraxinea in declining Fraxinus excelsior     

R. Bakys  R. Vasaitis  P. Barklund  K. Ihrmark  J. Stenlid 《Plant pathology》2009,58(2):284-292

A study was carried out to clarify the role of the fungus Chalara fraxinea in decline of Fraxinus excelsior , which is observed on a large scale in central and northern Europe with high incidence of tree mortality. The aims of this work were: (i) to check for the presence of C. fraxinea in various tissues of declining F. excelsior by agar culture isolations and by direct analysis of plant tissues using molecular techniques (DNA extraction, ITS-PCR, cloning, ITS sequencing and T-RFLP); (ii) to study fungal communities inhabiting tissues with symptoms; and (iii) to test the pathogenicity of C. fraxinea to F. excelsior . Chalara fraxinea was isolated from 93% of stem cankers, 91% of necrotic leaf stalks, 27–28% of bark wounds and 30% of visually healthy leaf stalks. Molecular analyses of necrotic leaves, leaf stalks and bark revealed the presence of 25 different fungal taxa, 14 of which were detected in all three types of tissue sample. Chalara fraxinea was the second most common species (61% of samples), and only Cryptococcus foliicola occurred more often (70%). All eight of the tested C. fraxinea isolates induced necroses in bark and cambium on each of 86 inoculated trees, and all controls remained healthy. Average length of necroses caused by different C. fraxinea strains varied from 4·2 to 8·9 cm, but the differences were statistically insignificant. Instead, differences in resistance of individual trees to C. fraxinea were observed.  相似文献   

开发利用互联网农林类开放存取文献资源   总被引：1，自引：0，他引：1  

刘彦 《农业网络信息》2009,(7):50-52

从开放存取解读和农林类开放存取文献资源两方面,对开发利用互联网上的农林类开放存取图书资源、期刊资源、报纸资源、论文资源、会议文献资源、标准文献资源、专利文献资源、文档文献资源、视频文献资源和数据库文献资源10种文献资源进行了探讨.  相似文献   

The Embeddedness of Collective Action in Nepalese Community Forestry     

Krishna K. Shrestha  Phil McManus 《Small-Scale Forestry》2007,6(3):273-290

Collective action by local communities has been recognised as crucial for effective management of natural resources, particularly the management of forests in rural settings in developing countries. However, the processes and outcomes of collective action in forest management are often analysed through a narrow rational choice model, ignoring the impacts of wider social, political and economic processes in conditioning peoples’ decisions to act (or not to act) collectively. Optimistic assumptions are made for collective action being instrumental to enhance both social and ecological outcomes, but there is a paucity of empirical evidence on how and why the condition of forests has improved (or deteriorated) under collective action, and what impacts the change in forest condition has on various groups within local communities. This study critically examines the emergence, evolution and outcomes of collective action in a case of community forestry in Nepal. A mix of qualitative and quantitative methods has been used to collect primary data from the forest, households, key informants and focus groups. The emergence and outcomes of collective action is found to be embedded in social, economic and political relationships, where powerful actors control the use of forests in order to ensure conservation, thereby resulting in the underutilisation of forest products. Poor users, who depend heavily on forests, are found to be worse off economically under community forestry, but still engage in collective action for a variety of socio-political reasons. This contradicts the conventional wisdom which assumes that people only cooperate when they benefit from cooperation. It is concluded that a deeper understanding of the embeddedness of community forestry is needed in order to achieve the potential of collective action.

Krishna K. ShresthaEmail:

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陕西林业执法存在的问题及对策   总被引：1，自引：0，他引：1  

崔彩贤  孙楠  张丽 《西北林学院学报》2007,22(4):206-208

林业执法是林业建设的组成部分,也是生态可持续发展的保障.文章在分析陕西林业执法存在问题的基础上,对陕西林业执法的对策建议提出了自己的观点和看法.  相似文献