Minneapolis-St. Paul Urban Tree Inventory

This dataset is a compilation of spatially explicit, species-specific urban tree inventories from across the seven-county Minneapolis-St. Paul (MSP) metropolitan area in Minnesota, U.S.A. The dataset was compiled to examine fine-scale patterns of tree biodiversity across MSP. Existing tree inventories were solicited from all municipalities, counties, park systems, and relevant non-profit organizations in the region for which we were able to find contact information, resulting in inventories from 35 municipalities, one county, one park system, three non-profit organizations and and two prior academic research efforts. The spatial and temporal scope of the inventories varies; for example, the inventories from some municipalities include data from a subset of only street trees at one timepoint, while other municipal inventories were continuously updated datasets with spatially comprehensive data for street trees in addition to some trees in parks and private lands. No inventory was fully comprehensive of all trees in an area. Data are assumed to have been collected between 2012-2022, although the timestamp on each data point is not explicit. Individual inventories were combined into one uniform database.

本数据集整合汇编了美国明尼苏达州七县范围的明尼阿波利斯-圣保罗（Minneapolis-St. Paul, MSP）都会区全域的空间显式（spatially explicit）、物种特异性（species-specific）城市树木清查数据。本数据集的构建旨在探究MSP都会区范围内树木生物多样性的精细尺度分布格局。研究团队通过公开联络渠道，向该区域内所有可获取联系方式的市域、县、公园管理机构及相关非营利组织征集现有树木清查数据，最终共获取到35个市域、1个县、1个公园系统、3家非营利组织以及2项既往学术研究项目的清查数据。各清查数据的时空覆盖范围存在差异：例如部分市域仅提供单个时间节点下的行道树子集数据，而其他市域的清查数据则为持续更新的数据集，除公园与私有土地内的部分树木外，还包含空间全覆盖的行道树数据。所有清查数据均未实现对区域内所有树木的全覆盖统计。尽管各数据点未明确标注采集时间戳，但默认所有数据的采集时段介于2012年至2022年之间。最终将所有独立清查数据整合为统一的标准化数据库。