四川盆地防护林体系结构研究

A STUDY ON THE NETWORK STRUCTURE OF PROTECTION FORESTS IN SICHUAN BASIN

以四川盆地低山丘陵区６８个县为研究对象，林业综合发展策略为基准，借助ＳＤ系统动力学仿真手段，对该区域农林结构、林种及树种配置进行了调控。研究结果提出了各亚区农林土地利用阈值，林种比例方案及树种配置技术指标。显著地增强了防护林体系产出的丰实度、生物多样性和系统与环境的协调性。为持续、高效地发挥防护林体系的目标功能提供了科学依据。

The 68 counties of low mountains and hills in Sichuan basin being taken asan example， an effort has been made in this study to adjust the structure of the region＇sprotection forests， its types and species by using eco-economic principles；The resultsmake the utilisation of land more practical，thus the protection-forest system is far morebeneficial to sustainable management.