落叶松幼苗顶芽萌发过程中内源激素含量的变化

对落叶松幼苗项芽萌发过程中内源激素含量变化的研究结果表明：吲哚乙酸(IAA)、赤霉酸(GA3)、脱落酸(ABA)、玉米素核苷(ZR)在项芽或新梢中含量较高，而新梢形成期幼苗根中IAA、GA3及ZR含量均显著高于其它时期的幼苗，而其ABA含量则与其它时期幼苗无显著差别；项芽将萌发期幼苗叶片中的IAA、GA1及ZR含量高于其它幼苗。     

Extension for private forest owners: Insights from a representative opinion poll in Switzerland

This paper presents findings from a representative opinion poll among Swiss private forest owners regarding the actual and future role of outside professional advice, training and extension services. First, the Swiss private forest owners are a highly heterogeneous group insofar as they are difficult addressees for any form of public support and extension services. Second, the majority of Swiss private forest owners appreciate the presently offered training facilities as well as the advisory activities of the cantonal and communal public forest services. Third, Swiss private forest owners are open to new forms of extension provided that such services will be custom-tailored and initiated by the advisers. Custom-tailored in this context means that the individual demands of private forest owners need to be addressed in a differentiated manner and advice will not be limited to the economic aspects of timber production. Local advisers from cantonal and communal forest services are presently in a pole position for offering new forms of extension, however, there are also more opportunities for services offered by private firms and non-governmental organisations. The broader scope for advisory and supporting activities as well as an increasing variety of potential actors providing such services implies a change in formulating and implementing forest policy programs at federal and cantonal levels.     

雾灵山自然保护区森林生态系统服务功能价值评估

对雾灵山自然保护区的森林生态系统服务功能价值进行了评估，得出雾灵山自然保护区森林生态系统服务总价值30272．76万元／a，其中，间接经济价值28144．82万元／a，占总价值的92．97％。其直接经济价值2127．94万元／a，占总价值的7．03％。直接经济价值与间接经济价值的比值是1：13．23，由此可见，雾灵山自然保护区森林生态系统服务功能间接价值的重要性。因此，保存森林的价值，决不仅仅是木材价值上的保护，更重要的是森林的生态系统服务功能间接价值的保护。     

应用官司河分布式水文模型模拟流域降雨-径流过程

由于地理要素（地形、气候、土壤、植被等）的空间异质性,森林的生态服务功能,尤其是涵养水源和保持水土的功能,也存在着空间分异。本文根据森林水文过程和森林水文生态功能的形成机理,建立了通用性较强的官司河分布式水文模型。官司河模型根据流域内部地理要素的空间异质性把流域分成一系列的单元和作用层,以单元和作用层为基本单位,连续计算每个单元和作用层的水文过程和水文要素变化,包括降雨输入、冠层截留、枯落物层吸水、入渗、蒸散、壤中流、地表径流等,进而得到流域水文的时空变化。用此模型模拟了四川绵阳官司河流域的降雨－径流过程,计算结果与观测结果基本吻合。     

Biodiversity and the lexicon zoo

Ecologists and natural resource managers struggle to define and relate biodiversity, biocomplexity, ecological integrity, ecosystem services, and related concepts; to describe effects of disturbance dynamics on biodiversity; and to understand how biodiversity relates to resilience, resistance, and stability of ecosystems and sustainability of resource conditions. Further diversifying this “lexicon zoo” are the ecological roles of rare species and refugia, and measures of surrogates and indicators of biodiversity parameters. To impart order on this lexicon zoo, a “concept map” framework is suggested for clearly defining biodiversity parameters and related terms, relating biodiversity to ecosystem services and sustainability, describing how disturbance affects biodiversity, and identifying biodiversity parameters for management and monitoring. Many relations among these concepts are poorly understood in managed forest environments and are presented here as testable tenets.     

农机社会服务工作模式构建方案探究

文章简述农机社会服务在我国的现状并提出对该模式的创新探索。     

Perceptions of veterinarians regarding privatization of veterinary services delivery in Ghana and Jamaica

There are on-going reforms in the delivery of veterinary services in many developing countries, with privatization of certain veterinary activities as one of the approaches. In Jamaica, with the support of veterinarians, clinical aspects of veterinary services were privatized in 1992. In contrast, Ghanaian veterinarians are generally wary of the government's on-going privatization process. The objective of this study was to find out if perceptions of the veterinarians from these two countries on certain issues of privatization were sufficiently different to explain the willingness or reluctance to go into private practice.

The response proportions for predominantly self-administered questionnaires were 83% (121/145) and 92% (35/38) for Ghana and Jamaica, respectively. There was a very good (92%) agreement in the perceptions of veterinarians in Ghana and Jamaica on a battery of 24 responses pertaining to privatization of veterinary services. Generally, the perceptions of the veterinarians in Ghana and Jamaica were similar even though the predominant delivery systems for animal health services were different. Therefore, reasons other than those examined in this study may explain the differences in willingness to go into private practice. The need to account for these other reasons is discussed.     

北京农职院图书馆为京郊新农村建设服务的可行性

农职院图书馆在服务本院教学与科研的同时,应利用自身的优势,主动参与到学院的“三农”服务工作中去,利用图书馆大量的文献信息资源与技术,为京郊地区新农村建设提供服务。     

中国饭店业的员工培训理念

随着酒店竞争日趋激烈,酒店对员工素质的要求也日益提高.如何提高员工队伍的素质、培养高素质的员工队伍成为困扰酒店的一大难题.而我国酒店员工的培训现状并不令人满意,存在许多问题.因此,要使酒店服务质量提高的同时提高经济效益,必须从根本上采取适当的方式方法改变我国酒店员工培训的现状.     

网上录取系统安全性能分析与解决方案

结合高校招生工作实际,本文系统分析了当前网上录取系统的性能与安全性现状及其存在的问题,给出了一种新型网上录取系统安全网络架构模型,并提出了横向安全服务模式的应用级安全解决方案.新的安全解决方案与当前的网上录取系统安全方案相比,不但高效、安全,还易于集中管理和分散部署,为网上录取系统的改进找到了一条可行的途径.