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作者曾报道了河南省济源县胃癌高发和饮用地表水或浅层地下水的密切关系,及济源县胃癌分布与第三系地层出露及流往第三系地层出露区的水系分布相一致,从而提出了浅层水与胃癌高发有关的物质可能来源于出露地表的第三系地层及该地层风化,剥蚀后经水流搬运沉积后的土壤。为了从更大面积上验证上述假设,作者把河南省各县(市)胃癌死亡率和省境内第三系地层出露区及各水系流域的分布进行了对比分析,结果如下。
The authors have reported the close relationship between the high incidence of gastric cancer and drinking surface water or shallow groundwater in Jiyuan County, Henan Province, and the distribution of gastric cancer in Jiyuan County is consistent with the distribution of tertiary soil strata exposed to and exposed to the tertiary strata. Therefore, it is proposed that the shallow water and the high incidence of gastric cancer may be derived from the Tertiary strata that exposed the surface and the weathering of the stratum. After the erosion, the deposited soil is transported by the water flow. In order to verify the above hypothesis from a larger area, the author conducted a comparative analysis of the mortality rate of gastric cancer in all counties (cities) of Henan Province, and the distribution of the Tertiary strata exposed in the province and the basins of various river systems. The results are as follows.