Land Cover Map 1990 (1km percentage aggregate class, GB)

This dataset consists of the 1km raster, percentage aggregate class version of the Land Cover Map 1990 (LCM1990) for Great Britain. The 1km percentage product provides the percentage cover for each of 10 aggregated land cover classes for 1km x 1km pixels. This product contains one band per aggregated habitat class (producing a 10 band image). The 10 aggregate classes are groupings of the 21 target classes, which are based on the Joint Nature Conservation Committee (JNCC) Broad Habitats, which encompass the entire range of UK habitats. The aggregate classes group some of the more specialised classes into more general categories. For example, the five coastal classes in the target class are grouped into a single aggregate coastal class. This dataset is derived from the vector version of the Land Cover Map, which contains individual parcels of land cover and is the highest available spatial resolution. LCM1990 is a land cover map of the UK which was produced at the UK Centre for Ecology & Hydrology by classifying satellite images (mainly from 1989 and 1990) into 21 Broad Habitat-based classes. It is the first in a series of land cover maps for the UK, which also includes maps for 2000, 2007, 2015, 2017, 2018 and 2019. LCM1990 consists of a range of raster and vector products and users should familiarise themselves with the full range (see related records, the UK CEH web site and the LCM1990 Dataset documentation) to select the product most suited to their needs. This work was supported by the Natural Environment Research Council award number NE/R016429/1 as part of the UK-SCAPE programme delivering National Capability. Full details about this dataset can be found at https://doi.org/10.5285/c7195a20-7943-4d5d-9f6e-c9fead472dde本数据集为英国1990年土地覆盖图（Land Cover Map 1990, LCM1990）的1km分辨率栅格百分比聚合分类版本。 该1km百分比产品针对1km×1km的像素，提供10个聚合土地覆盖分类各自的覆盖百分比。 本产品每个聚合生境分类对应一个波段，最终生成10波段影像。 10个聚合分类是对21个目标分类的归组，这些目标分类基于联合自然保护委员会（Joint Nature Conservation Committee, JNCC）的宽泛生境分类体系，涵盖了英国所有生境类型。 聚合分类将部分更细分的专业分类归为更通用的类别，例如目标分类中的5个海岸类被归为单个聚合海岸类。 本数据集源自土地覆盖图的矢量版本，该版本包含独立的土地覆盖地块，是当前可获取的最高空间分辨率数据。 LCM1990是英国的土地覆盖图，由英国生态与水文研究中心通过将卫星影像（主要采集于1989年和1990年）分类为21个基于宽泛生境的分类而生成。 它是英国系列土地覆盖图的首幅产品，该系列还包含2000年、2007年、2015年、2017年、2018年及2019年的土地覆盖图。 LCM1990包含多种栅格与矢量产品，用户应熟悉全系列产品（可查阅相关记录、英国生态与水文研究中心官网及LCM1990数据集文档），以选择最贴合自身需求的产品。 本研究得到自然环境研究理事会编号为NE/R016429/1的项目资助，该项目作为英国SCAPE（UK-SCAPE）计划的一部分，旨在提供国家能力支撑。 本数据集的完整详情可访问：https://doi.org/10.5285/c7195a20-7943-4d5d-9f6e-c9fead472dde