Meadow and pasture inventory

The inventory of meadows and pastures began in 1987 and was made by county. The aim was to spread knowledge about the cultural and natural values of these lands and to create a basis for spatial planning. The objects were initially delimited by analogy on maps and only subsequently digitised by the counties. After careful studies of IR images, scale 1:60 000, interesting areas were plotted into topographic maps. After that, these areas of land were carefully inspected in the field. The area types identified by the Swedish Environmental Protection Agency as decisive in the assessment are: well-maintained areas with long traditional continuity, good examples of the above mentioned, restored, endangered nature, vegetation types, biotopes, species, very rich flora and/or fauna, peculiar or strange areas. The base is partly table digitised on a scale of 1:10 000/20 000 with the economic map as a background and partly cut out of the economic map. The inventory methodology is described in 'Inventory of Meadows and Hawlands. Handbook' (Naturvårdsverket 1987). In 1999, the Swedish Environmental Protection Agency initiated a project aimed at linking the information in the database to the GIS layers and obtaining a national comparable product.本草地与牧场普查工作始于1987年，以县级行政单元为单位组织实施。本次普查的核心目标为：普及此类土地的文化与自然价值相关知识，同时为空间规划工作提供坚实的科学依据。普查地块最初通过地图类比法划定边界，后续再由各县级单位完成数字化处理。经对1:60000比例尺红外影像开展细致研判后，重点关注区域被标注至地形图中；此后，相关区域均赴野外开展了全面细致的实地核查。瑞典环境保护局（Swedish Environmental Protection Agency）认定为评估核心依据的区域类型包括：具备长期传统存续性且维护状况良好的区域、前述类型的典型代表、修复后的区域、濒危自然区域、植被类型、生境（biotope）、物种、动植物资源极为丰富的区域，以及特色鲜明或较为罕见的区域。本数据集的底图来源分为两部分：一部分是以经济地图为底衬、经1:10000/20000比例尺数字化处理的图层，另一部分则直接从经济地图中裁切提取。本次普查的方法细节详见《草地与牧场普查手册》（瑞典环境保护局，1987）。1999年，瑞典环境保护局启动了一项专项项目，旨在将该数据库中的信息与地理信息系统（GIS）图层进行关联整合，并产出可在全国范围内对比使用的标准化成果产品。