Abstract: Now the development of highway is in large scale，specially the developments of the high-grade highway have met lots of problem that have been met never before tied up with the regional environment in special environment．However，the study of natural zoning for highway has obtained few achievements in this period．especially the theories system and the zoning schemes of the natural zoning for highway are 1agged，so the national natural zoning for highway nowadays is difficult to meet the demands of the developments of the highway engineering， combined the reality ofthe highway construction and the achievements have been obtained in our country in near 20 yeats，we should carry llew research to natural zoning for highway from the new theories system and methods．

Key words: natural zoning for highway, principles, methods, index system, factor analysis, geographical information system

摘要： 针对当前公路自然区划的研究现状，特别是公路自然区划的理论体系与区划方案的研究，结合我国近20年 来的公路建设的实际与取得的研究成果，从新的理论体系、方法层面上对公路自然区划进行新的研究，并结合地理 信息系统的最新理论和软件，提出更加合理更适合国土现状的公路自然区划的原则、方法及指标体系．

关键词: 公路自然区划, 原则, 方法, 指标体系, 因素分析, 地理信息系统