Geospatial distance data for Central California Dryland ecology sites

Ecology Ecological plant-animal, habitat-climate interaction study sites within Central California Drylands. Metadata site_code is the key to join different data within the region distances are in listed in km distances are derived from the R package library(sf) and the single function st_distance on the geometry vector for the lat-long per site instance the minimum distances list the distance (in km) and site closest/adjacent to a given site Use these distance data can be used to infer independence ecological for research however, other attributes such as species turnover, physical barriers and breaks, and logical associations between sites are not replaced by using distances between sites for joins to climate and derived data at different spatial resolutions, independence estimated through distances is useful本数据集聚焦生态学研究，涵盖加州中部干旱区内开展的动植物交互、栖息地-气候交互作用相关研究样地。元数据中的样地代码（site_code）是关联该区域内不同数据集的关键字。样地间距离以千米（km）为单位，其计算源自R语言sf包，通过对每个样地的经纬度几何向量调用st_distance函数实现。例如，最小距离列表会记录给定样地的最近邻/相邻样地及其对应距离（单位：km）。尽管此类距离数据可用于推断生态学研究中的样地独立性，但样地间的物种更替、物理阻隔与断裂、以及样地间的逻辑关联等其他属性，无法通过样地间距离来替代。在将样地距离用于关联不同空间分辨率的气候及衍生数据时，通过距离估算得到的样地独立性依然具有应用价值。