Vegetation monitoring network – Measurement locations (PQ numbers) from 1960

Periodic vegetation measurements over a time frame from 1960. The measurements were made per location on a grid of 1 km by 1 km, in which an estimate of the percentage of area per crop type is made. The data is used in a vegetation measurement viewer and dashboard. The data comes from ecological research and consultancy firm Van der Goes en Groot. The data is aggregated on the basis of measurement point (PQ number). The number of measurements over the years varies per measurement point. This is stored in the field “PQ number repetitions”. This dataset does not contain the measurement results, only the measurement locations. The measurement results are shielded internally within the province of Zuid-Holland because of information about protected plant species.本数据集涵盖1960年起开展的周期性植被测量工作。测量以1km×1km的网格点位为执行单元，针对每个点位估算各类作物的面积占比。 该数据集可应用于植被测量可视化查看器与仪表盘系统。 数据源自生态研究与咨询机构Van der Goes en Groot。 数据以测量点位（PQ编号）为基准进行聚合。不同测量点位的年度测量数量存在差异，该信息存储于"PQ编号重复次数"字段中。 本数据集仅收录测量点位信息，未包含具体测量结果。 由于涉及受保护植物物种的相关信息，测量结果在南荷兰省（Zuid-Holland）内部进行了屏蔽处理。