Land Use Intensity Index for Stream Ecosystems (LUIS) datasets for Germany, 2017

This dataset provides harmonized, spatially explicit data linking agricultural land use intensity to ecological status in German rivers and streams. Each record represents the functional elementary catchment identifier (ZHYD); Strahler stream order; Water Framework Directive (WFD) ecological status (coded as integers 1–5, mapping to "High", "Good", "Moderate", "Poor", "Bad"); morphological type (natural, artificial, or heavily modified; naturalAWBHMWB); Biological Quality Element (BQE) code (qeCode); conventional agricultural land fraction (ALF); and the hydrologically weighted Land Use Intensity Indices (LUIS N for nitrogen, LUIS P for phosphorus, LUIS Pest for pesticides) as well as the composite LUIS index. LUIS variables are calculated using crop- and region-specific input data, surface connectivity, and precipitation factors as described in the accompanying manuscript. All indices are normalized using min-max scaling across the German national domain for 2017. This curated minimum dataset enables direct reproduction of the main statistical analyses and figures from the study “A hydrologically informed agricultural land use intensity index to assess the ecological impacts on streams and rivers.” It provides a valuable resource for researchers and policymakers investigating the links between agricultural practices, hydrological connectivity, and stream ecosystem health across scales.本数据集提供经统一协调的空间显式数据，关联德国河流与溪流的农用地利用强度与生态状态。每条记录包含功能集水区基本标识符（ZHYD）、斯特拉勒河流分级（Strahler stream order）、《水框架指令》（Water Framework Directive, WFD）生态状态（以整数1-5编码，分别对应“优”“良”“中”“差”“极差”）、形态类型（天然、人工或重度改造；naturalAWBHMWB）、生物质量要素（Biological Quality Element, BQE）编码（qeCode）、常规农用地占比（conventional agricultural land fraction, ALF），以及水文加权的土地利用强度指数（Land Use Intensity Indices, LUIS）：LUIS N（对应氮负荷）、LUIS P（对应磷负荷）、LUIS Pest（对应农药负荷）与综合LUIS指数。LUIS变量通过结合作物与区域特异性输入数据、地表连通性及降水因子计算得出，详见配套研究手稿。所有指数均基于2017年德国全国研究域采用最小-最大归一化处理。本精选最小数据集可直接复现研究《水文约束型农用地利用强度指数用于评估溪流与河流生态影响》中的主要统计分析与图表。本数据集为探究农业实践、水文连通性与溪流生态系统健康跨尺度关联的研究者与政策制定者提供了宝贵资源。