Land Cover Map 1990 (1km dominant aggregate class, N. Ireland)

This dataset consists of the 1km raster, dominant aggregate class version of the Land Cover Map 1990 (LCM1990) for Northern Ireland. The 1km dominant coverage product is based on the 1km percentage product and reports the aggregated habitat class with the highest percentage cover for each 1km pixel. 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/10.5285/380f49e5-9448-4d26-b832-fe176d3a1978

本数据集由北爱尔兰1990年土地覆盖图（LCM1990）的1公里分辨率栅格、主要聚集体类别版本构成。该1公里主要覆盖产品基于1公里百分比产品，报告了每个1公里像素中覆盖比例最高的聚集体类别。10个聚集体类别是对基于联合自然保护委员会（JNCC）广义栖息地的21个目标类别的分组，涵盖了英国所有栖息地范围。聚集体类别将一些较为专业的类别归入更广泛的类别之中。例如，目标类别中的五个海岸类别被归入一个单一的聚集体海岸类别。该数据集源自土地覆盖图的矢量版本，包含单个土地覆盖地块，并具有最高可用空间分辨率。LCM1990是英国土地覆盖图，由英国生态与水文中心生产，通过对卫星图像（主要来自1989年和1990年）进行分类，将其分为基于21个广义栖息地的类别。它是英国系列土地覆盖图中的第一份，还包括2000年、2007年、2015年、2017年、2018年和2019年的地图。LCM1990包含一系列栅格和矢量产品，用户应熟悉其全部范围（参见相关记录、英国生态与水文中心网站以及LCM1990数据集文档），以选择最适合其需求的产品。本项工作得到了自然环境研究委员会（Natural Environment Research Council）资助项目编号NE/R016429/1的支持，作为英国-SCAPE项目的一部分，旨在提供国家能力。有关本数据集的详细信息，请查阅https://doi.org/10.5285/380f49e5-9448-4d26-b832-fe176d3a1978。