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 |
摘要点击 1621 全文点击 959 |
查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
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) |
|
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. |