OC Natural Tree Row

The natural tree row polygon layer was developed in the summer of 2000 with on-screen digitizing in ArcView, using the 1997 Oakland County digital Orthophotography and the 1995 Land Use/Land Cover coverage provided by the Southeastern Michigan Council of Governments (SEMCOG) as reference themes. Note: The southeast portion of the county (9 geographic townships) was excluded from this coverage. The key attribute associated with this coverage is "Acres".本天然林带多边形图层（natural tree row polygon layer）于2000年夏季采用ArcView软件的屏幕数字化功能开发完成，所用参考主题包括1997年奥克兰县数字正射影像图（digital Orthophotography）以及由密歇根东南部政府委员会（Southeastern Michigan Council of Governments，SEMCOG）提供的1995年土地利用/土地覆被（Land Use/Land Cover）覆盖图层。注：该县东南部区域（共9个地理乡镇）未被纳入本覆盖图层范围。本覆盖图层的关键关联属性为"Acres（英亩数）"。