21世纪是绿色世纪。要持续、快速、跨越式发展国民经济,资源与环境是两大基础保证。十六大把保护资源和环境建设列为基本国策。森林是一种特殊的可再生资源,在其发展过程中,不仅具有不断提供木材及其林产品的经济功能(经济价值),同时又具有维护和美化环境的生态功能(生态和社会 The 21st century is a green century. To continue, rapid and leapfrog development of the national economy, resources and the environment are two basic guarantees. The 16th National Congress of the Communist Party of China has listed the protection of resources and environment as the basic national policy. Forests are a kind of special renewable resources. In the course of their development, forests not only have the economic functions (economic value) of continuously providing wood and their forest products, but also have the ecological functions of maintaining and beautifying the environment (ecology and society