陆良县非公有制林业发展和探索

近几年来,陆良县非公有制林业发展较快,成为陆良县经济发展的新亮点.综合分析陆良县非公有制林业特点、发展历程及在县域经济的作用,同时找出存在的问题,通过陆良县非公有制林业发展的启示,并认真对问题进行探索,以求促进非公有制林业进一步发展.     

新平县林业产业现状及发展对策

新平县林产业处于低效益的产出状态.就如何提高新平林业产业效益和合理配置林业资源作浅论性分析.     

集体林权制度改革与林业产业发展的关系

对集体林权制度改革与林业产业发展的关系进行探讨,指出原来的林业体制和机制已不能适应现代林业产业快速发展的要求,只有深化集体林权制度改革,才能推动和促进林业产业的快速发展.     

现代林业发展阶段的初步划分

以林业发展历程,两次现代化理论及林业的定位等为客观依据,从动态的、发展的视角,将我国现代林业的发展划分为5个阶段:起步阶段、发展阶段、初步实现阶段、基本实现阶段和全面实现阶段,并具体分析了各发展阶段的特点。     

基于ISM结构模型的可持续林业分析与评价

林业的“四个地位”明确指出林业在我国的经济与发展中肩负的重大责任,可持续林业是国家可持续发展战略的一个重要组成部分.然而,对于可持续林业需要满足什么样的要求,如何实现可持续林业,社会各界还存在异议.本文通过构建可持续林业的指标体系,运用ISM解释结构模型对可持续林业各个指标进行建模,并进行了系统分析,给出了简化了的表层影响因素、中层影响因素和深层影响因素三大分类,并对可持续林业的各个指标进行分级评价,有利于推进可持续林业的定量研究与可持续林业发展的实现.     

林业学术组织应在服务现代林业建设中更加奋发有为

贯彻落实十七届中央书记处第7次办公会议精神,各级林学会组织要不继加强学会能力建设,在担负科技人员联系责任、推进科普服务林业建设、发展民间林业对外交流、提升林业科研创新水平、推广转化林业科技成果等方面要奋发有为,为现代林业建设提供全方位服务。     

实施天保工程对黔东南州国有森工企业的影响

本文对天保工程实施后黔东南州国有森工企业的企业职工、企业福利待遇、企业生产经营方式进行分析,阐述了实施天保工程对国有森工企业的影响,并对存在问题提出相应的建议。     

Forest fragmentation and regrowth in an institutional mosaic of community, government and private ownership in Nepal

This study analyzes forest change in an area of Nepal that signifies a delicate balance between sustaining the needs and livelihood of a sizable human population dependent on forest products, and an effort to protect important wildlife and other natural resources. The study area, a portion of the Chitwan valley district of Nepal, represents what may be becoming a common institutional mosaic in many countries of the world who have a population reliant on forest products for their livelihood: (1) a national park; (2) a designated park buffer involving participatory forest management programs; (3) scattered patches of designated community forest; and (4) large areas of adjacent landscape made up of mostly private landholdings under agricultural practices. Utilizing Landsat images from 1989 and 2000, we analyze land cover change in each of these management zones using landscape ecology metrics and quantifying proportional distributions of land cover categories. Our results show significant differences in terms of land cover dynamics and landscape spatial pattern between these land ownership classes. These findings indicate that community-based institutions (participatory management programs in the park buffer and the designated community forests) are capable of halting or even reversing trends in deforestation and forest fragmentation.     

A meta-analysis of the effects of wildfire,clearcutting, and partial harvest on the abundance of North American small mammals

Wildfires and timber harvest are two of the most prevalent disturbances in North American forests. To evaluate and compare their impact on small mammals, I conducted meta-analyses on (1) the effect of stand-replacement wildfires and several types of forest harvest (clearcutting followed by burning, clearcutting, and uniform partial harvest) on the abundance of deer mice (Peromyscus maniculatus) and red-backed voles (Myodes gapperi), (2) the impact of clearcutting and partial harvest on a broader array of small mammal species, and (3) the responses of small mammals to recent and older clearcuts (i.e. less than 10 years vs. 10–20 years after harvest). In coniferous and mixed forest, all disturbances except for partial harvest triggered significant increases in the abundance of deer mice and declines in red-backed voles. The increase in deer mice after wildfire was stronger than after clearcutting and marginally stronger than after clearcutting and burning. The abundance of red-backed voles was greatest in undisturbed or partially harvested stands, intermediate after clearcutting, and lowest after wildfire or clearcutting and burning. While the positive effect of clearcutting on deer mice did not persist beyond 10 years after disturbance, the negative effect on red-backed voles was similar between recent and older clearcuts. In deciduous forest, clearcutting did not result in a consistent change in abundance of deer mice and red-backed voles. For other small mammals, recent clearcutting tended to increase the abundance of yellow-pine chipmunks (Tamias amoenus), and meadow and long-tailed voles (Microtus pennsylvanicus and Microtus longicaudus). Woodland jumping mouse (Neozapus insignis), masked shrew (Sorex cinereus), and short-tailed shrew (Blarina brevicauda) did not show consistent response to timber harvest. Overall, the impact of different disturbances on the abundance of small mammals (i.e. positive or negative) appears to be species-specific, but disturbance type may influence the magnitude of this effect. Disturbance types can be ranked from severe to mild in terms of small mammal responses. The effects of forest harvest on small mammals are not equivalent to those of wildfire.     

加速云南省林木良种化的探讨

云南省林木良种化工作始于20世纪70年代.至目前,经云南省品种审定委员会审(认)定的的林木良种有37个,其遗传增益达10%～15%.目前面临的主要问题有林木良种意识不强;基地规模小;品种单一;审定工作滞后;科研、生产、推广体系不健全等.提出了今后的发展目标及加速良种化进程的对策.