中文摘要：

农耕区与畜牧区是依人类经济生活方式而划分的基本区域，介于两者之间的则为农牧交错地带。中国北方农牧交错地带的范围很广，大致走向从大兴安岭东麓经辽河中、上游，循阴山山脉、鄂尔多斯高原东缘至祁连山，直抵青藏高原东缘，延绵于辽宁、内蒙古、河北、山西、陕西、宁夏、甘肃数省区，东西长达数千公里。这一地带在历史上虽然也一度出现过以农业或畜牧业为主要生产方式的时期，但农、牧业混杂应是最具代表性的地域特征，因此一般称其为农牧交错带。

英文摘要：

The interlocking belt of agriculture and husbandry in north China is a sensitive area ecologically. Its formation was propelled by climatic change in ancient times. The process from the emergence of inceptive husbandry spots to the final formation of this belt that shows an orderly way in both time and space well coincide with the whole tendency of climatic change at that time. This evolutionary process went chronologically from 2000BC through 1500BC to 1000BC and spatially from the west towards the east. At the beginning stage, there was no such interlocking pattern but simultaneous engaging in the two kinds of economy based on the family or tribe. Later, it advanced to the spatial distribution of scattering among each other, and finally there formed the division of agricultural and pastoral areas.