基于地质大数据技术对云南土壤重金属地质高背景区的划定

肖高强, 赵娟, 陈子万, 宋旭锋, 朱能刚

Delineation of areas with high geological background values of heavy metals in soils in Yunnan Province, China based on geological big data technology

XIAO Gao-Qiang, ZHAO Juan, CHEN Zi-Wan, SONG Xu-Feng, ZHU Neng-Gang

表5 云南省土壤重金属地质高背景区耕地面积统计

Table 5 Statistical results of cultivated land areas in high geological background areas of soil heavy metals in Yunnan Province

岩性组合 总面积/ 万公顷 耕地面积/ 万公顷 比例/ % 碳酸盐岩 267.18 87.44 32.73 碳酸盐岩与(含煤)碎屑岩并层 259.43 102.55 39.53 碳酸盐岩与基性火山岩并层 31.95 8.95 28.00 含煤碎屑岩 35.37 12.48 35.30 含基性组分碎屑岩 35.71 12.90 36.14 基性—超基性火山岩 190.73 56.48 29.61 中基性侵入岩 10.40 3.61 34.70 合计 830.77 284.41 34.23