| 线性判别分析对舟山海洋站降水中常量阳离子含量的年度、季节特征分析 |
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| 中文关键词 舟山群岛 降水 常量阳离子 稳健统计分析 线性判别分析 |
| 英文关键词 Zhoushan Archipelago rainwater major cation robust statistic analysis linear discriminate analysis (LDA) |
| DOI 10.13227/j.hjkx.20061012 |
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| 中文摘要 |
| 通过对舟山站点2002/2003年度降水中的6种常量阳离子H+、NH4+、K+、Na+、Ca2+、Mg2+近2年的连续观测，采用稳健统计分析对浓度范围及变化趋势进行了描述。利用线性判别分析对实验数据进行降维处理，得到线性判别曲面，对样本点在新正规变量空间的时间性分布特征进行了描述，依据正规变量的线性组合，解释了决定该样本点时间性特征分布的主要阳离子影响因素，并对造成异常样品点的影响因素进行了分析。 |
| 英文摘要 |
| Rainwater samples were collected at rain-sampling Spot of Zhoushan in 2002-2003, 6 major cation concentrations (H+、NH4+、K+、Na+、Ca2+、Mg2+) of rainwater sample were determined. The concentration variation range and character were depicted by robust statistic analysis. Linear discriminate analysis (LDA) was used to acquire a further knowledge on the annual and seasonal characteristics of research major cations. Distribution character of samples from sample spot was clearly depicted in the new CA1-CA2 ordinates generated by linear discriminate analysis, and the reasons that caused the outliers in samples were discussed. |
