Ecopia Land Cover Percentage Statistics (2021-2022)

The summaries are derived from the Ecopia vector land cover dataset (a non-public resource) and not from the Ecopia raster land cover dataset available on this open data site. Percentages for each land cover type were calculated as compared to Ecopia’s total delineated area per summary polygon: sum_area_land_cover_type / sum_area_all_Ecopia_delineated_polygons_<within each summary polygon> Some land cover types (forest canopy overlap and bridges) overlap other land cover types. If one were to sum the percentages presented in the tables for any particular summary polygon, it likely will not equal 100 percent. Some summary polygons boundaries overlap Puget Sound or other open water. Since these areas are not delineated by Ecopia they are left out of the percentage calculations. These layers may not have polygons that are an exact match to their original sources (like WRIAs or census tracts, etc). Percentages are presented as decimals. This layer is best viewed in ArcGIS Pro for table access and percentages shown as decimals.本数据集的各类摘要信息源自Ecopia矢量土地覆盖数据集（vector land cover dataset，非公开资源），而非本开放数据平台上可获取的Ecopia栅格土地覆盖数据集（raster land cover dataset）。每类土地覆盖类型的占比以单个摘要多边形内Ecopia划定的总面积为基准计算，计算公式为：某类土地覆盖类型的总面积 ÷ 单个摘要多边形内Ecopia划定的全部多边形总面积。部分土地覆盖类型（如林冠重叠区域与桥梁）与其他土地覆盖类型存在空间重叠，若对任意单个摘要多边形对应表格中的占比进行求和，结果大概率不会等于100%。部分摘要多边形的边界与普吉特湾（Puget Sound）或其他开阔水域重叠，由于Ecopia未对上述区域进行划定，因此未将其纳入占比计算。本数据集图层可能无法与原始来源（如WRIAs或人口普查区等）的多边形实现完全匹配。占比以小数形式呈现。该图层需在ArcGIS Pro中打开，方可访问属性表格并查看以小数形式展示的占比。