Peatlands/Carbon-rich soils

The map of carbon-rich soils is an excerpt from KBK25 and nomenclatically follows the soil mapping guide, 5th edition (KA5). Carbon-rich soils here mean soils with corg content of at least 7.5% organic soil carbon or 15% organic soil substance in a horizontal or inclined soil layer of 10 cm thickness within the upper 40 cm of the profile:本富碳土壤（carbon-rich soils）图件摘取自KBK25数据集，其命名规范遵循第五版《土壤制图指南》（KA5）。 此处所指的富碳土壤，是指在土壤剖面0~40cm的上部区域内，厚度为10cm的水平或倾斜土层中，土壤有机碳（corg）含量不低于7.5%，或有机土壤物质含量不低于15%的土壤：