Potential Access to Recreation (Midwest Conservation Blueprint 2026 Indicator)

Definition This indicator identifies accessibility gaps to green space and outdoor recreation in populated areas within the Midwest Landscape. It prioritizes areas currently lacking access to parks within a 10-minute walk based on population density, community health, pollution burden, and more. Pixels can take the following values: 1 – Lower priority, not a natural asset 2 – Lower priority, natural assets 3 – Medium priority, not a natural asset 4 – Medium priority, natural assets 5 – High priority, not a natural asset 6 – High priority, natural assets Selection This indicator was chosen as a targetable, important feature of the MLI goals that will be used to track conditions over time and prioritize areas for conservation. Indicators were defined through elicitation and prioritization exercises with federal and state participants. Criteria for the indicators includes 1) actionable, 2) measurable, 3) relevant to multiple groups across the region, and/or 4) representative of other social and/or environmental values. Input Data & Mapping Steps This indicator originates from the Trust for Public Land's ParkServe dataset. To create this layer, MLI partners, members, and staff completed the following mapping steps: projected all input data to NAD83 (2011) UTM Zone 15N, erased existing parks and 10-minute walk service areas from the Park Priorities data, converted the resulting Park Priorities polygons to a 30m raster, and emphasized natural assets within Park Priority areas. The final raster had the following values: 1 – Lower priority, not a natural asset, 2 – Lower priority, natural assets, 3 – Medium priority, not a natural asset, 4 – Medium priority, natural assets, 5 – High priority, not a natural asset, and 6 – High priority, natural assets. Finally, we removed highly altered areas using our Highly Altered Areas Mask. For full mapping details, please refer to the Midwest Conservation Blueprint Development Process. For a complete download of all Blueprint input and output data, visit the Midwest Conservation Blueprint 2026 Data Download.定义 本指标用于识别中西部景观（Midwest Landscape）内人口聚居区域中，绿地与户外休闲场所的可达性缺口。其基于人口密度、社区健康状况、污染负荷等多类因素，优先筛选当前无法在步行10分钟范围内抵达公园的区域。像元取值如下： 1 – 低优先级，非自然资产 2 – 低优先级，自然资产 3 – 中优先级，非自然资产 4 – 中优先级，自然资产 5 – 高优先级，非自然资产 6 – 高优先级，自然资产 指标选取 本指标被选为MLI（Midwest Landscape）目标明确且可针对性开展工作的关键特征，将用于长期追踪区域环境状况，并优先划定保护修复区域。该指标通过与联邦及州级参与者开展的征询与优先级排序工作制定。指标遴选标准包括：1）可落地性；2）可量化性；3）对区域内多利益相关群体具有相关性；以及/或4）可代表其他社会与/或环境价值。 输入数据与制图流程 本指标源自公共土地信托基金（Trust for Public Land）的ParkServe数据集。为生成该图层，MLI合作方、成员及工作人员完成了如下制图流程：将所有输入数据投影至NAD83（2011）UTM 15N带坐标系；从公园优先级数据中擦除现有公园及步行10分钟服务范围；将所得的公园优先级多边形转换为30米分辨率栅格；并强化公园优先级区域内的自然资产属性。最终栅格的取值如下：1 – 低优先级，非自然资产；2 – 低优先级，自然资产；3 – 中优先级，非自然资产；4 – 中优先级，自然资产；5 – 高优先级，非自然资产；6 – 高优先级，自然资产。最后，我们通过高改造区域掩膜（Highly Altered Areas Mask）移除了改造程度极高的区域。如需完整制图细节，请参阅《中西部保护蓝图开发流程》（Midwest Conservation Blueprint Development Process）。如需下载所有蓝图输入与输出数据，请访问《中西部保护蓝图2026数据下载》（Midwest Conservation Blueprint 2026 Data Download）页面。