摘要
This paper carried on the work of first and second level karst environment zoning for highway engineering from the demands of the construction of highway engineering in karst areas.In first-level zoning,five zones of tropical and subtropical monsoon humid-semi humid area of South China,temperate monsoon sub arid area of North China,mid-cold temperate monsoon sub arid-sub humid area of the Northeast,mid-temperate continental climate arid area of the Northwest and alpine mountain climate arid area of Qinghai-Tibetan Plateau are divided using the climate and tectonics as indexes.And 26 zones of mid-mountain area of Qinling-Daba Mountains and peak-forest plain area of Guangxi Basin etc. are divided using the landform,distribution of karst and karst environmental problems as indexes in second-level zoning based on the result of first-level zoning.