Woody habitat corridor data in South West England

This dataset contains polylines depicting non-woodland linear tree and shrub features in Cornwall and much of Devon, derived from lidar data collected by the Tellus South West project. Data from a lidar (light detection and ranging) survey of South West England was used with existing open source GIS datasets to map non-woodland linear features consisting of woody vegetation. The output dataset is the product of several steps of filtering and masking the lidar data using GIS landscape feature datasets available from the Tellus South West project (digital terrain model (DTM) and digital surface model (DSM)), the Ordnance Survey (OS VectorMap District and OpenMap Local, to remove buildings) and the Forestry Commission (Forestry Commission National Forest Inventory Great Britain 2015, to remove woodland parcels). The dataset was tiled as 20 x 20 km shapefiles, coded by the bottom-left 10 km hectad name. Ground-truthing suggests an accuracy of 73.2% for hedgerow height classes. Full details about this dataset can be found at https://doi.org/10.5285/4b5680d9-fdbc-40c0-96a1-4c022185303f

本数据集包含描绘康沃尔和德文郡大部分地区非林地线性树木和灌木特征的折线图，这些数据源自于Tellus South West项目收集的激光雷达数据。通过将来自英国西南部激光雷达（光探测与测距）调查的数据与现有的开源GIS数据集相结合，我们绘制了由木质植被构成的非林地线性特征。输出数据集是通过对激光雷达数据进行多步骤筛选和掩膜处理的结果，该处理利用了来自Tellus South West项目的GIS景观特征数据集（数字地形模型（DTM）和数字表面模型（DSM）），英国测量局（OS VectorMap District和OpenMap Local，以去除建筑物）以及林业委员会（英国林业委员会国家森林资源清查2015，以去除林地地块）进行。该数据集以20 x 20 km的形状文件分块，并以左下角的10 km百等分名称进行编码。实地验证表明，树篱高度类别的准确率为73.2%。有关本数据集的详细信息，请参阅https://doi.org/10.5285/4b5680d9-fdbc-40c0-96a1-4c022185303f。