植物活动痕迹与作为生态系统痕迹化石的古土壤（Ｐａｌｅｏｓｏｌ）关系密切［１］，两者都是现代痕迹学研究的重要内容．根据东濮凹陷油气区钻井岩芯中获得的资料，对植物根迹和古土壤作了环境分析，指出其在辨别海相、非海相、层序界面［２］、古地理、古气候方面的显著作用，为油气储层沉积环境和层序地层学研究增添了新的分析手段 The traces of plant activity are closely related to Paleosol, a fossil of ecosystem traces [1], both of which are important aspects of modern trace research. According to the data obtained from the drilling cores in the oil and gas area of ​​Dongpu Depression, the environmental analysis was made on the plant roots and the paleosol. It is pointed out that it is useful in distinguishing marine, non-marine, sequence boundaries [2], palaeogeography and palaeoclimate , Adding new analytical tools for the study of sedimentary environment and sequence stratigraphy in oil and gas reservoirs