基于水环境化学及稳定同位素联合示踪的土地利用类型对地下水体氮素归趋影响
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路路,戴尔阜,程千钉,邬真真
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The sources and fate of nitrogen in groundwater under different land use types: Stable isotope combined with a hydrochemical approach
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LU Lu,DAI Erfu,CHENG Qianding,WU Zhenzhen
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表4 主成分分析成分矩阵以及旋转成分矩阵结果
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Tab. 4 The component matrix and rotated component matrix of PCA analysis for groundwater chemicals
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变量 | 成分矩阵 | 旋转成分矩阵a | 主成分1 | 主成分2 | 主成分1 | 主成分2 | SO42- | 0.907 | 0.200 | 0.931 | -0.099 | Mg2+ | 0.873 | 0.338 | 0.898 | -0.237 | NO3- | 0.861 | -0.062 | 0.861 | -0.189 | Cl- | 0.853 | -0.126 | 0.844 | 0.031 | Na+ | 0.852 | 0.226 | 0.770 | -0.076 | K+ | 0.737 | 0.414 | 0.738 | -0.449 | Ca2+ | 0.719 | 0.285 | 0.701 | -0.502 | HCO3- | 0.102 | 0.782 | -0.257 | 0.861 | NH4+ | -0.578 | 0.664 | -0.211 | 0.855 | Fe2+ | -0.622 | 0.648 | -0.212 | 0.760 | Mn2+ | -0.536 | 0.579 | 0.449 | 0.649 | 累积贡献率(%) | 53.275 | 74.056 | 46.481 | 74.056 |
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