一、引言 农林措施(Agroforestry)具有生产与保护两种作用,其主要的产品通常是燃料、饲料和果实,但是最主要的作用无疑是土壤保持。这种农业生产与土壤保持相结合的能力,对生产发展必不可少的基本资源的保护作用,恰恰是农林措施在持续利用土地方面所做出的主要贡献。 I. INTRODUCTION Agroforestry has both production and protection roles. Its main products are usually fuels, fodder and fruit, but the most important function is undoubtedly soil conservation. The ability of such agricultural production in combination with soil conservation to protect the essential resources necessary for the development of production is precisely the main contribution made by agriculture and forestry measures in the sustainable use of land.