【摘要】 森林是陆地生态系统的主体,掌握好森林资源数量、质量及空间分布的动态变化,建立森林资源数据库,实现森林资源动态管理,是加强森林资源保护,指导区域林业生产,科学规划,合理经营,提高环境质量的依据。本文从土地利用结构、林种结构、龄组结构、树种结构角度分析了北京市森林资源的现状,并对北京市的森林资源进行了动态分析,以期了解森林资源的特点和动态变化规律,并提出适宜北京林业的可持续发展对策。更多还原

【Abstract】 Forest is a central part of land ecosystem.To know the dynamic changes of forest resources in quantity and quality,and build database,carry out dynamic management to forest are the basis to protect forest resources,to supervise area forest production,to scientificaly and logically manage forest,to improve the quality of environment.By applying forest resources survey data of "The seventh Five-Year Plan\,Eighth Five-Year Plan\,Ninth Five-Year Plan",actuality\,charactersand rule of dynamic changes of forest resources in Bejing were analyzed.Finally feasiblesustainable development measures to Beijing were brought forward.更多还原