Soil 1:200 000 (soil species)

Soil 1:200 000 (soil species) contains material produced during 2002-2009 throughout Finland. The material can be used in regional planning, national defence, soil mapping (EU) and various regional cooperation surveys. The mapping scale has been 1:50-00-1:200 000. 1:20 000, 1:50 000 and 1:100 000 soil base maps and 1:200 000 scale new production based on interpretation and mapping have been used for the compilation of medium-scale data. The minimum size of the soil pattern is usually about 6 ha, with the exception of glacier river formations, edge morene formations and domemorens, which are described in the data for areas larger than 2 ha. The covering peat layer is described in the new production as rowing (0-0.3 m peat), thin peat (0.3-0.6 m peat) and thick peat (over 0.6 m peat). Rowings, rocks and open rocks have been added to new production by generalising the corresponding figures in the National Land Survey of Finland’s terrain database. In connection with the new production, field observations have been collected about the thickness of the soil cover and the order of layers at a depth of 1 meter, as well as rock reveals. Soil 1:200 000 (soil species) data was subjected to a coordinate system conversion in March 2013. A transformation from the uniform coordinate system of the mapping system to the ETRS-TM35FIN coordinate system has been made using a triangular affine conversion.1:200000土壤（soil species）数据集涵盖了2002年至2009年间在芬兰全境生成的相关资料。该资料可应用于区域规划、国防建设、欧盟土壤制图以及各类区域合作调查工作。本次制图的比例尺范围为1:50000至1:200000。本次中比例尺数据的编制，依托了1:20000、1:50000、1:100000比例尺的土壤基础图件，以及基于解译与制图生成的1:200000比例尺新成果。土壤图斑的最小面积通常约为6公顷，但冰川河流地貌、边缘冰碛地貌及穹状冰碛地貌除外——此类地貌在数据中的描述面积阈值为2公顷以上。本次新成果中，对覆盖泥炭层的分类为：极薄泥炭层（0~0.3米泥炭）、薄泥炭层（0.3~0.6米泥炭）及厚泥炭层（0.6米以上泥炭）。本次新成果通过对芬兰国家土地调查局（National Land Survey of Finland）地形数据库中的对应图斑进行综合概括，补充了极薄泥炭层、裸岩及裸露岩体要素。在本次新成果编制过程中，还收集了关于土壤覆盖层厚度、1米深度内土层序列以及岩石出露情况的野外观测数据。 1:200000土壤（soil species）数据集已于2013年3月完成坐标系转换。本次转换采用三角仿射变换方法，将原制图系统的统一坐标系转换为ETRS-TM35FIN坐标系。