新疆若羌县农用地表层土壤硒氟碘地球化学特征

马常莲, 周金龙, 曾妍妍, 任贵兵, 王松涛

Geochemical characteristics of selenium, fluorine, iodine in surface soil of the agricultural land in Ruoqiang County, Xinjiang

MA Chang-Lian, ZHOU Jin-Long, ZENG Yan-Yan, REN Gui-Bing, WANG Song-Tao

表6 研究区表层土壤地球化学指标的主成分分析

Table 6 Pearson principal component analysis of element contents of surface soils in the study area

指标 主成分1 主成分2 主成分3 主成分4 Se 0.027 0.245 0.836 -0.031 F 0.059 0.794 -0.003 -0.285 I 0.172 0.804 0.110 0.147 OrgC 0.984 0.066 0.112 -0.024 N -0.085 0.650 0.384 0.348 SiO2 0.019 0.006 -0.916 -0.027 Al2O3 0.981 0.101 -0.118 -0.063 pH -0.056 0.016 -0.015 0.938 特征值 1.975 1.775 1.724 1.111 方差贡献率/% 24.690 22.184 21.550 13.887 累积方差贡献率/% 24.690 46.874 68.424 82.311