National Forest Inventory Woodland

An extract of the National Forest Inventory (NFI). This covers all forest and woodland area over 0.5 hectare with a minimum of 20% canopy cover, or the potential to achieve it, and a minimum width of 20 metres in the West of England (including North Somerset).This includes areas of new planting, clearfell, windblow and restock. The woodland map excludes all 'tarmac' roads and active railways, and forest roads, rivers and powerlines where the gap in the woodland is greater than 20 meters wide.All woodland (both urban and rural), regardless of ownership, is 0.5 hectare or greater in extent, with the exception of Assumed woodland or Low density areas that can be 0.1 hectare or greater in extent. Also, in the case of woodland areas that cross the countries borders, the minimum size restriction does not apply if the overall area complies with the minimum size. Full metadata is available from the Forestry Commission.

国家森林资源清查（NFI）的摘录。本数据集涵盖了英格兰西部（包括北萨默塞特）超过0.5公顷的森林和林地面积，其中树冠覆盖率至少为20%，或具有达到此标准的能力，且最小宽度为20米。这包括新种植区、皆伐区、风害区和更新种植区。林地地图排除了所有‘沥青’道路和活跃铁路，以及森林道路、河流和电力线路，在这些地方，林地之间的空隙宽度超过20米。所有林地（无论是城市还是乡村），无论所有权如何，其面积均不少于0.5公顷，除非是假定林地或低密度区域，其面积可以不少于0.1公顷。此外，对于跨越国家边界的林地区域，如果总面积符合最小面积限制，则不适用最小面积限制。详细的元数据可从林业委员会获取。