从系统论观点认识和思考现代林业

森林、湿地和荒漠生态系统组成了陆地生命支撑体系的主体，构成现代林业的根基。三大生态系统构成了一个开放、整体、动态和远离平衡态等的生态巨系统，物质、能量循环和信息在三大系统与环境之间持续交换，各子系统之间彼此联系，相互影响。随着人类活动加深，经济社会与生态系统构成了一个关系更为紧密的人类一经济一社会复合生态系统。系统论、耗散结构理论和协同论为协调复合生态系统发展，建设生态文明和发展现代林业提供了建设思路。

Thoughts of mordern forestry from viewpoints of system theory

Forests, wetlands and desert ecosystems compose a main body of the land life support system and are consisted of the foundation of modern forestry. The three ecosystems constitutes an open , overall, far from equilibrium dynamics eco--giant system, where material, energy and information circulation systems exchange with the environment, and the subsystems exchange with each other, influence each oth- er. With the deepening of human activities, economic and social and ecological systems form a closer relationship between human beings -- e- conomy -- society complex ecosystems. System theory, dissipative structure theory and coordination provide some suggestions to the complex ecosystem development, the construction of ecological civilization and the development of modern forestry.