森林资源发展和保护项目效益分析与评价

本文利用项目管理统计预测的原理和方法 ,根据河南省实施世界银行贷款森林资源发展与保护项目的有关资料数据 ,简要分析了项目的经济效益和社会效益 ,并提出了利用贷款实施营林项目较使用自有资金更能增加经济效益的根据。     

公路草坪养护管理技术初探

为保证草坪绿化质量 ,延长其寿命 ,结合近年来在公路草坪施工与养护管理中积累的实践经验 ,对公路草坪的种类、生长习性 ,以及草坪建植后的浇水、除杂草、修剪、施肥、病虫害防治等养护管理技术进行了探讨与总结 ,以期为各地公路草坪绿化建设提供借鉴与参考。     

江西林业产业化与可持续发展

在全省铺开的林业产权制度改革,是江西林业生产关系的一次重大调整,对解放和发展林业生产力、加速林业产业化进程、实现林业可持续发展将产生深远影响.阐述林业产业化与可持续发展的内涵、制约江西林业产业化的根本问题,以及推动林业产业与可持续发展的方向与措施.     

Application of real options theory to forestry investment analysis

This paper demonstrates the utility of the real options approach to forestry investment analysis. The main objectives are to discuss the real option theory and show how it can be adopted to model uncertainty and managerial flexibility in forest management and investment. Secondly, we show how to calculate the option values of selected options that may be available to managers of forest industry firms. The paper provides an empirical application, which compares a forestry investment using the static Faustmann model and the real options approach. Four management options are used for the real options approach: an option to delay reforestation, an option to expand the size of the wood processing plant, an option to abandon the processing plant if timber prices fall below a certain level or due to corporate take-over, and multiple options that evaluated all three options together. All options were evaluated using the binomial option-pricing model, where timber values are assumed to follow a multiplicative binomial process. The results show that the Faustmann analysis rejected the investments as unprofitable, while the option analysis showed that all three options were highly valuable if exercised. When real options are considered, the traditional Faustmann model for assessing the profitability of a forestry investment may fail to provide an adequate decision-making framework because it does not properly value management's ability to adjust to shocks in the economy, as well as risks and uncertainty.     

林业地理信息系统空间数据质量及误差初探

空间数据质量控制是建立林业地理信息系统的重要环节 ,文中着重对林业地理信息系统空间数据质量误差的来源与空间数据质量控制的方法、措施进行了初步探讨     

D型肉毒素水剂毒饵控制鼠害的药效试验

使用D型肉毒素水剂毒饵对克拉玛依农业开发区荒漠鼠害进行药效试验,结果表明:D型肉毒素剂量达到300万毒价时,对害鼠可起到很好的防治效果,投药6 d后,灭鼠效果达到91.8%。因此,通过合理投放此种鼠药,可使鼠害防治在以保护生态环境为前提的情况下,取得降低成本和有效防治的双重效果。     

A Study on the Effects of Insect Pests and Diseases on Intensively Managed Plantations

Basedon the results of monitoring the environment of China National Afforestation Project (NAP) and the investigation on insect pests and diseases in 1.2 million ha of plantations, the author elaborates the areas, species and causes of insect pests and diseases occurring in the project's areas and provides fundamental theory for guiding environmental protection and plantation establishment in a sound way. Since the project's activities strictly follovved the guideline of environmental protection in past five years, little losses were caused by some commonly insect pests and diseases.     

林业科技创新、推广与示范体系建设

论述了林业科技创新、推广与示范体系建设在林业开发中的重要性，总结了上饶市的实践经验与体会。     

吡虫啉杀虫剂注干对4种鞘翅目害虫毒杀效果研究

光肩星天牛(Anoplophora glabripennis(Motsch．))、青杨脊虎天牛(Xylotrechus rusticus L.)、白星花金龟(Liocola brevharsis(Lewis))和榆紫叶甲(Ambrostoma quadriimpressum Motschulsky)属鞘翅目(Coleoptera),危害多种林木和果树。1980年以来,光肩星天牛在三北防护林中严重发生^[1,2],