Tribal Conservation Sovereignty (Midwest Conservation Blueprint 2026 Indicator)

Definition This indicator identifies the ability of Tribal Nations to have access to, and control of, their natural and cultural resources. It prioritizes areas based on the locations of Tribal Nations trust and fee lands. Pixels can take the following values: 1 – Tribal trust or fee land, not a natural asset 2 – Tribal trust or fee land, natural asset 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 Bureau of Indian Affairs Land Area Representations. To create this layer, MLI partners, members, and staff completed the following mapping steps: projected all input data to NAD83 (2011) UTM Zone 15N, converted the land area representation polygons into a binary 30m raster, and emphasized natural assets within Tribal lands, resulting in the following values: 1 – Tribal trust or fee land, not a natural asset, 2 – Tribal trust or fee land, natural asset. 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 本指标用于评估部落族群 (Tribal Nations) 获取并掌控自身自然与文化资源的能力。该指标依据部落信托土地与自有土地 (Tribal trust and fee lands) 的位置划分保护优先级。栅格像元可包含以下取值： 1 – 部落信托土地或自有土地，非自然资产 2 – 部落信托土地或自有土地，包含自然资产 指标遴选 本指标被选为MLI目标 (MLI) 的一项可落地且关键特征，用于随时间追踪保护状况并划定保护优先级。该指标通过与联邦及州级相关方开展征询与优先级排序工作得以确定。指标遴选标准包括：1）具备可操作性；2）可量化；3）与区域内多利益相关方相关；及/或4）可代表其他社会及/或环境价值。 输入数据与制图流程 本指标源自印第安事务局土地面积表征数据集 (Bureau of Indian Affairs Land Area Representations)。为生成该图层，MLI合作方、成员及工作人员完成了以下制图步骤：将所有输入数据投影至NAD83 (2011) UTM 15北带坐标系，将土地面积表征多边形转换为30米分辨率的二值栅格，并强化部落土地内的自然资产属性，最终得到以下像元取值：1 – 部落信托土地或自有土地，非自然资产；2 – 部落信托土地或自有土地，包含自然资产。最后，我们通过高度干扰区域掩膜 (Highly Altered Areas mask) 移除了受严重干扰的区域。如需完整制图细节，请参考《中西部保护蓝图开发流程》 (Midwest Conservation Blueprint Development Process)。如需下载全部蓝图输入与输出数据，请访问"2026年中西部保护蓝图数据下载页面" (Midwest Conservation Blueprint 2026 Data Download).