미국
Cottonwood Lake Study Area-Wetland Vegetation Zones-1978
Spatial polygons of vegetation zones in 1978 for wetlands; P2, P3, P4, T4, T6, and T8 within the Cottonwood Lake Study Area, Stutsman County, North Dakota. Created from a collection of digital orthorectified images from aerial photographs of the study area acquired during 1978 using Stewart and Kantrud classification system.