当前,全国正在开展农业自然资源调查和农业区划工作,各省区还普遍开展县级农业区划。作为自然地理基本研究内容之一的土地类型,在认识区域自然地理特点,搞好农业区划上具有自己的特点。本文拟从北京市昌平县土地类型调查制图入手,探索县级农业区划途径问题。

One basic approach of the integrated physical geography is to study land types of certain region.Present artical tries to study land types of Chang Ping county,Beijing,as related to agricultural regionalization.The tem“land”is treated as the integration of all physical factors,while landform,vegetation and soil are chief criteria for classifying the land types.10 land types of frist category and 42 land types of second category are identified in Chang Ping county.Areal structure of land types is the basic for agricultural regionalization.Chang Ping county may he thus divided into four agricultural area:1.Alluvial plain-farming area;2.Diluvial fan-grain and Fruit area;3.Frontalhill-pasture,fruit,and grain area;4.Mountain forest area.