In this study,we selected rock slopes near Suiyu railway station in central Sichuan Basin as research object,and selected neighboring natural slope as control,to study the differences in distribution characteristics of carbon,nitrogen and phosphorus of soil aggregates in railway rock slope of different years and natural slope.The results showed that organic carbon content of soil aggregates in 4kinds of slopes listed in the following order:natural slope>slope built in 2003>slope built in 1996>slope built in...