水土流失区土壤硒、锌地球化学特征及其生物有效性——以福建省长汀县为例

唐志敏, 张晓东, 梅丽辉, 湛龙, 陈国光, 刘红樱, 周墨, 张明, 张洁

Geochemical characteristics and bioavailability of selenium and zinc in soils in an area subjected to water and soil erosion : A case study of Changting County, Fujian Province

TANG Zhi-Min, ZHANG Xiao-Dong, MEI Li-Hui, ZHAN Long, CHEN Guo-Guang, LIU Hong-Ying, ZHOU Mo, ZHANG Ming, ZHANG Jie

表2 主成分分析结果

Table 2 Results of principal component analysis

指标 PC1 PC2 PC3 PC4 pH值 -0.201 0.154 0.794 -0.352 S 0.644 -0.449 0.331 0.182 Se 0.779 -0.313 -0.132 0.122 Zn 0.663 0.361 0.255 -0.199 SiO2 -0.886 -0.331 0.162 0.163 Al2O3 0.479 0.626 -0.289 -0.353 TFe2O3 0.853 -0.155 -0.045 -0.258 MgO 0.654 -0.150 0.168 -0.083 CaO -0.010 0.092 0.864 -0.014 Na2O 0.050 0.633 0.176 0.594 K2O 0.164 0.815 -0.008 0.304 有机质 0.687 -0.296 0.133 0.521 方差的百分比/% 34.8 18.0 14.7 9.6 累积百分比/% 34.8 52.8 67.5 77.1