坡地农林复合系统的结构类型与效益分析──以长江三峡库区坡地农业为例

AN ANALYSIS ON STRUCTURE TYPES AND BENEFITS OF SLOPELAND AGROFORESTRY SYSTEM ──TAKING THE “THREE GORGE”RESERVOIR AREA AS AN EXAMPLE

本义认为现代术语的农林复合系统来源于生产实践，体现了农业与林业的有机结合、品种生态和经济的有机结合、产品多样化以及管理科学化４个方面相统一的特点。文章在分析三峡库区农林复合系统的类型结构基础上，提出了农林复合系统可以进行层次结构划分的观点。最后，以典型案例研究方法入手，对１种农林结构类型进行效益分析，结果表明，采用植物篱农林复合坡地系统，是现阶段生产力水平下实现坡地生态经济协调发展的有效途径，值得广泛推广。

The modern term “agro forestry system”derives from agricultural practice. It is an or-ganic combination of agriculture and forestry；ecology and economy； product variation andscientific management． On the basis of analyzing the types and structure of agroforestry sys-tem in the “Three Gorge” Reservoir area，the paper points out that agroforestry system can-be divided into different structure levels. Taking some typical cases as research examples，thepaper compares the benefits of four kinds of structures. The result illustrates that the hedgerow agroforestry system on slopeland is an effective way to realize the coordinate develop-ment of ecology and economy.