北京市耕地表层土壤有机碳分布及其影响因素
孔祥斌, 胡莹洁, 李月, 段增强

Distribution and influencing factors of soil organic carbon of cultivated land topsoil in Beijing
KONG Xiangbin, HU Yingjie, LI Yue, DUAN Zengqiang
图3 北京市耕地土壤碳密度空间分布
Figure 3 Spatial distribution of carbon density of cultivated land in Beijing