Humus content classes (KA5) in the upper soil of Brandenburg

This map is based on the legend units of the soil overview map with corresponding assignment of parameterised surface soil shapes. These represent a soil form society for each legend unit. The individual (area) soil shapes were used with parameters, including the corresponding humus content determined by ground and laboratory tests. The same horizontal-substrate combinations were summarised and the corresponding parameters (such as humus contents) were statistically derived (usually the median value). The humus content of the horizontal-substrate combinations of surface soil forms was classified according to the Soil Clinical Carting Instructions, 5th edition, Hannover 2005, Tab. 15. Due to the dominance of agricultural land in Brandenburg, the Humsk classification for agricultural use was applied nationwide. The map represents the classified values for the upper floor. These are usually the values of the top mineral or bog floor horizon. At different values for the surface soil shapes of the respective legend unit, humus content classes were averaged weighted.本地图以土壤概图的图例单元为基础，对各单元赋予参数化表层土壤形态的对应属性，此类赋值为每个图例单元匹配了一套土壤形态组合。各单个（区域）土壤形态均结合参数使用，其中包括通过野外实地与实验室测试确定的相应腐殖质含量。将相同的水平基质组合进行汇总，其对应参数（如腐殖质含量）通过统计学方法推导得出（通常取中位数）。表层土壤形态的水平基质组合的腐殖质含量，依据《土壤制图指南》（第5版，汉诺威，2005年）表15进行分级。鉴于勃兰登堡州农用地占绝对主导地位，全国范围内均采用针对农业用途的Humsk分级标准。本地图展示的是上层土层的分级值，通常指表层矿质土层或泥炭土层的腐殖质含量数值。针对各图例单元的不同表层土壤形态数值，腐殖质含量分级采用加权平均法计算。