R-mode factor analysis has proved very useful in distinguishing geochemical data, clearly dominated by anthropogenic in comparison to geogenic sources. 型因子分析已被证明在鉴别地球化学资料方面是非常有用的，它主导着人为成因和地球成因来源的对照。
Effect of Geogenic Emission of Methane on the Atmosphere 地质成因的甲烷释放对大气的影响
Keywords geogenic methane;emission;flux;source and sink; 地质成因甲烷;释放;通量;源与汇;
