Access to Open Space by Census Tract

This layer contains details about access to open space in King County. This digital document was originally developed for the Determinant of Equity - Parks and Natural Resources presentation. It includes information about Access to Open Green Space equity indicator. Fields describe the total population (Total Pop), number of people who live within 1/4 mile for urban areas 2 miles for rural areas of a green space (Quarter_and_2mi_WithinPop), and the percentage of people who live within 1/4 mile for urban areas 2 miles for rural areas of a green space (Percent_Quarter_or_2mile). The data was compiled by King County GIS Center. The current Urban Growth Area/Boundary from the Comprehensive Plan was used to determine whether a residence (address point used as a population point) was considered urban (with criteria within ¼ mile of an open space) or rural (with criteria within 2 miles of an open space). Open space was defined by the countywide PARK layer and any other areas within the PSRC Open Space layer that were not already included in the PARK layer. In this analysis, a vacant, brush covered lot with no way to tell it is owned by a parks department has the same value as a developed park with ball fields and play areas. Regional Trails are also included as open space, when the surrounding property is publicly owned. A traditional buffer is used for this open space analysis, because to do a network analysis would require the location of road access points for all 1400+ parks in King County. While a network analysis would be more accurate, this is less of a difference in urban areas with highly developed road networks that make road access to a park more direct. For more information about King County's equity efforts, please see: Equity, Racial & Social Justice Vision Ordinance 16948 describing the determinates of equity Determinants of Equity and Data Tool This layer is also used in the SEPA letter generator app and must remain shared with the Public.本图层包含金县（King County）开放空间可达性的详细信息。本数字文档最初为《公平性决定因素——公园与自然资源》演示文稿开发，涵盖开放绿地可达性公平性指标的相关信息。其字段包括：总常住人口（Total Pop）、居住在城市区域1/4英里、乡村区域2英里范围内绿地周边的人口数（Quarter_and_2mi_WithinPop），以及居住在上述绿地周边对应范围内的人口占比（Percent_Quarter_or_2mile）。本数据集由金县地理信息系统（GIS）中心编制。本次分析采用综合规划中的现行城市增长区/边界，以判定住宅（以地址点作为人口统计点）属于城市区域（判定标准为：距离开放空间1/4英里范围内）还是乡村区域（判定标准为：距离开放空间2英里范围内）。开放空间的界定依据为全县范围的PARK图层，以及PSRC开放空间图层中未被PARK图层涵盖的其余区域。在本次分析中，无法确认归属公园部门所有的空置灌丛地块，与配备球场及游乐区的成熟公园享有同等价值。当周边地块为公共所有时，区域步道亦纳入开放空间范畴。本次开放空间分析采用传统缓冲区法，原因在于若采用网络分析法，则需获取金县境内全部1400余处公园的道路出入口点位信息。尽管网络分析法的精度更高，但在道路网络高度发达、公园可达性更强的城市区域，两种方法的差异相对有限。如需了解金县公平性相关工作的更多信息，请参阅：阐述公平性决定因素的《种族与社会正义公平愿景条例第16948号》（Equity, Racial & Social Justice Vision Ordinance 16948），以及《公平性决定因素与数据工具》（Determinants of Equity and Data Tool）。本图层同时应用于SEPA信函生成器应用程序，且需始终向公众开放共享。