Medium-scale agricultural site mapping Brandenburg

From today's perspective, the MMK is a concept ground map with some terrain checks. After the mapping in the years from 1974 to 1981, the digital data for the MMK with the technical possibilities at that time were collected. GIS systems did not yet exist. It was a technical procedure for driving down the area contours with relatively few support points with the aim of determining the area size of the respective mapping unit. The target of the MMK was 1 : 100 000. The contours have been digitized by the work cards (topographic maps 1 : 25 000, edition before 1945, with the border lines of the catting units). These formed the basis for the printed maps on a scale of 1: 100,000, but their topography was distorted for reasons of secrecy. Before 1990, these land provisions were used to impose conditions and plan cultivation for agricultural production cooperatives and state goods. After 1990, this data was made GIS-capable by the Federal Institute for Geosciences and Natural Resources. Only changes were made to the rough contouring of the individual surfaces if surfaces overlapped, gusseted surfaces were present or surfaces were mirrored due to the technical survey method. Recognized content errors have been fixed. After that, these data were divided between the then five new federal states. Until about 2001, this data was distributed in Brandenburg. After that, the land overview map of the country solved 1 : 300 000 (BÜK300) with comparable area resolution and comprehensive representation of this map set.从当下视角来看，MMK是一款带有地形校核要素的概念底图。该地图于1974年至1981年间完成测绘，彼时依托当时的技术手段采集了MMK的数字数据，地理信息系统（Geographic Information System，GIS）尚未问世。当时采用的技术流程为：通过相对较少的支撑点遍历区域等高线，核心目标是测算对应制图单元的面积规模。MMK的制图比例尺为1:100 000。 等高线数据源自工作底图——即1945年前出版的1:25 000比例尺地形图，附带制图单元的边界线。这些数据构成了1:100 000比例尺印刷地图的制作基础，但出于保密需求，其地形信息曾被做失真处理。1990年以前，这类土地数据曾用于为农业生产合作社与国营单位制定经营要求、规划耕作布局。 1990年后，联邦地球科学与自然资源研究所（Federal Institute for Geosciences and Natural Resources）将该数据适配为地理信息系统可用格式。仅在以下情形下会对单个地块的粗略等高线进行调整：地块出现重叠、存在拼接接缝，或是因技术测量手段导致地块镜像偏移。已识别的内容错误均已完成修正。此后，该数据被分配至当时的五个新联邦州。直至2001年前后，该数据仅在勃兰登堡州范围内分发使用。在此之后，该国1:300 000比例尺土地概览地图（BÜK300）凭借可比的区域分辨率与该图集的全面覆盖性取代了原有数据。