东北平原区地块尺度土地质量地球化学评价合理采样密度研究
彭敏, 李括, 刘飞, 唐世琪, 马宏宏, 杨柯, 杨峥, 郭飞, 成杭新

Reasonable sampling density for land parcel scale geochemical assessment on land quality in Northeast China Plain
Min PENG, Kuo LI, Fei LIU, Shi-Qi TANG, Hong-Hong MA, Ke YANG, Zheng YANG, Fei GUO, Hang-Xin CHENG
图2 公主岭市大岭地区土壤元素变异系数柱状图
Fig.2 Coefficient of variation of elements in soils from the study area