OC Presettlement Vegetation

The RegionalPresettlementVegetation is land use circa 1800. It is a statewide database for Michigan based on original surveyors tree data and descriptions of the vegetation and land between 1816 and 1856. This polygon feature class was adjusted from a shapefile downloaded in 2000, from the State of Michigan's Online Geographic Data Library (http://www.mcgi.state.mi.us/mgdl/). The Michigan Department of Environmental Quality is the publisher of the data. The feature class was reprojected and then clipped to Oakland County's extent. Some attributes were removed from the data. The original data was published in 1978 by the State of Michigan. The scale of the data collection is unknown. The key attributes include: COVERTYPE, LEGCODE and VEGCODE.区域定居前植被（RegionalPresettlementVegetation）数据集为约1800年的土地利用数据。该数据集为密歇根州全域级数据库，基于1816至1856年间的原始勘测树木数据以及植被与土地状况描述构建。本多边形要素类源自2000年从密歇根州在线地理数据图书馆（http://www.mcgi.state.mi.us/mgdl/）下载的形状文件，并经过调整处理。该数据的出版方为密歇根州环境质量部。本要素类经重投影后，被裁剪至奥克兰县的空间范围。部分属性字段已从数据中移除。原始数据由密歇根州于1978年发布。数据采集的比例尺未知。核心属性字段包括：COVERTYPE、LEGCODE以及VEGCODE。