可持续农业的区域观念和等级结构

可持续农业是地域性较强的问题，若离开区域讨论可持续农业，并不符合持续农业发展人地系统结构优势的基本要求。文章对可持续农业的地域性和地域体系的等级结构进行了初步研究，认为可持续农业须立足一定的地域，构建良性的人口、资源、环境、和家业协调系统。将可持续农业地域体系划分为四类：自然地域类（Ｎ类型），行政地域类（Ｐ类型），经济区域类（Ｅ类型）及全球和区域组织类（Ｇ类型）。

The Notion of Region and the Structure of Hierarchy in the Development of Sustainable Agriculture

The sustainable agriculture has a strong regional property, the fundamental demand of the structure optimization of the man land system in the development of sustainable agriculture can not be met without the reference to this property. In this paper, the author studied the regional property of sustainable agriculture development and the hierarchical structure of the regional system first, then suggested that the coordinating system with the contents of population, resources, environment and agriculture in the development of sustainable agriculture should be confined to certain region. In the final part of this paper, the regional system of sustainable agriculture development is further divided into four types: natural type; administrative type; economic type and the global and regional organization type.