DISTRIBUTION CHARACTERISTICS AND INFLUENCING FACTORS OF GERMANIUM-RICH SOIL IN TYPICAL AGRICULTURAL AREA OF CHONGQING MUNICIPALITY
YU Fei1,2, ZHANG Yong-wen1,2, WANG Yu1,2, LUO Kai1,2, CHEN Da-bing1,2, XIE Jian1,2
1. Chongqing Key Laboratory of Land Quality Geological Survey, Chongqing 400038, China; 2. Southeast Sichuan Geological Brigade, Chongqing Bureau of Geology and Mineral Exploration, Chongqing 400038, China
Abstract:By collecting 8 496 topsoil samples from Nanchuan district, a typical agricultural area in Chongqing Municipality, the study tests the contents of germanium (Ge) and other elements in soil and discusses their characteristics and influencing factors. The results show that the soil Ge content is 0.13×10-6-13.59×10-6, averagely 1.54×10-6, higher than the average Ge content in the "one-hour economic circle" and purple soil in Chongqing. The Ge-rich (>1.4×10-6) soil area is up to 1 559.8 km2, mainly distributed in the south of the study area. The high-Ge soil in Nanchuan district is mainly distributed in the Upper Permian Wujiaping Formation and Changxing Formation, as well as the Lower Triassic Daye and Jialingjiang formations. The soil Ge content is mainly controlled by parent materials, which is positively correlated with soil organic matter and associated with 8 heavy metals. The high-value area in the middle is greatly affected by concentrated coal mines and human activities.
余飞, 张永文, 王宇, 罗凯, 陈达兵, 谢建. 重庆典型农业区富锗土壤分布特征及影响因素[J]. 地质与资源, 2021, 30(5): 609-616.
YU Fei, ZHANG Yong-wen, WANG Yu, LUO Kai, CHEN Da-bing, XIE Jian. DISTRIBUTION CHARACTERISTICS AND INFLUENCING FACTORS OF GERMANIUM-RICH SOIL IN TYPICAL AGRICULTURAL AREA OF CHONGQING MUNICIPALITY. GEOLOGY AND RESOURCES, 2021, 30(5): 609-616.
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