National land cover data 2018; base layer

National Land Cover Data (NMD) is a comprehensive mapping of Sweden. The aim is to get basic information about the landscape and how it changes. The mapping was carried out in 2017-February 2019 and thereafter the plans are for the data to be updated every 5 years. NMD consists of a basic mapping of 25 thematic classes in three hierarchical levels. The mapping is in raster format at 10 m resolution and with a minimum mapping unit down to 0.01 hectares. In addition to the basic mapping, the following additional layers are included: — object height and coverage — productivity (forest productivity) — land use — low mountain forest For these additional layers there are separate metadata descriptions and download services.国家土地覆盖数据集（National Land Cover Data，缩写NMD）是针对瑞典全境的综合性土地覆盖制图成果，其核心目标是获取瑞典景观格局及其动态变化的基础信息。该制图工作于2017年至2019年2月期间完成，后续计划每5年对该数据集进行一次更新。NMD包含三个层级体系下的25个专题类别的基础制图内容，采用空间分辨率为10米的栅格格式，最小制图单元低至0.01公顷。除基础制图内容外，该数据集还包含以下附加图层： — 物体高度与覆盖度 — 生产力（森林生产力） — 土地利用 — 低山森林 针对上述附加图层，数据集提供独立的元数据说明与下载服务。