This data set includes soil temperature and ground temperature in 10 m boreholes, and active layer thickness, at 30 stations in both natural and disturbed conditions near gas pipelines, measured each September. The stations were also monitored yearly in July-August, and ecological parameters such as species composition, plant abundance, mean height of plants, and projection coverage were measured. A digital landscape map (scale 1 to 5000) was compiled for Nadym station. These data were collected at Circumpolar Active Layer Monitoring (CALM) Program Network Site ID R1.