data_masterbook_impervious_cover

This dataset supports the manuscript “Impervious Cover Is Associated with Culture-Based Morphotype Diversity in Urban Stormwater Runoff,” submitted to Microbiology Spectrum. Runoff was sampled during 25 storm events at three catchments in Chapel Hill, North Carolina, representing green, residential, and commercial land-cover contexts. The dataset includes 75 site-storm observations. Variables include site information, land-cover percentages, storm/weather measurements, nutrient agar culture-derived morphotype area fractions, and alpha-diversity indices calculated from those morphotype area fractions, including Shannon diversity, Gini-Simpson diversity, and Pielou evenness. The data are intended to support reproducibility of the reported mixed-effects modeling and summary analyses.本数据集用于支撑投稿至《Microbiology Spectrum》的论文《不透水覆盖与城市雨水径流中基于培养的形态型多样性的关联》的相关研究。本研究于北卡罗来纳州教堂山市的三个汇水区内，针对绿地、居住区与商业区三种土地覆盖场景，在25次降雨事件中采集了雨水径流样本。本数据集共包含75条站点-降雨事件配对观测记录。数据变量涵盖站点信息、土地覆盖占比、降雨与气象监测数据、营养琼脂（nutrient agar）培养得到的形态型（morphotype）面积占比，以及基于上述形态型面积占比计算得到的α多样性指数（alpha-diversity indices），包括香农多样性指数（Shannon diversity）、基尼-辛普森多样性指数（Gini-Simpson diversity）与皮卢均匀度指数（Pielou evenness）。本数据集旨在支撑已报道的混合效应建模与汇总分析的可重复性验证。