Historic grassland survey data with contemporary spatial habitat data for semi-natural grasslands across England version 2

This dataset compares historic grassland survey data with contemporary spatial data of habitats in England. The National Vegetation Classification (NVC) community and grassland type were determined for 848 quadrats surveyed at grassland sites in England between 1960 and 1981. A 100m buffer was generated around each individual quadrat which matched the spatial accuracy (±100m) of the quadrat location, to represent a grassland site. These sites were intersected with Natural England's Priority Habitats Inventory in ArcGIS, to indicate the percentage cover of priority habitats found at the grassland sites in 2013. This dataset supersedes the previous version.

本数据集对比了英国境内的历史草地调查数据与当代生境空间数据。1960年至1981年间，研究人员对英国境内草地样地的848个样方（quadrat）开展调查，并确定了其对应的国家植被分类系统（National Vegetation Classification, NVC）群落与草地类型。为每个样方生成100米缓冲区，该缓冲区匹配样方位置的空间精度（±100米），以此表征对应草地样地。通过ArcGIS软件将上述样地与英国自然署（Natural England）的优先生境清单进行空间相交分析，以获取2013年该草地样地内优先生境的覆盖百分比。本数据集已取代此前版本。