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ÂÛÎÄÉó¸åÒâ¼ûÓÐÕâô¼¸Ìõ£º 1. The Pearson correlations presented in Table 5 do not show significant correlations between OM and the four metals in soils/sediments (lines 258-260). In Figure 3, the sequential extraction results show that a major fraction of copper (Cu) resides within the organic matter fraction of the soils/sediments. The Pearson correlation between OM and Cu therefore is misleading. 2. Only Pearson Correlations are reported. There are others such as the goodness of fit (F-test) of the multivariate model and significance of the coefficients (including interaction terms between independent variables). The conclusions based on the analysis provided are not strong: for example, the data show that a major fraction of the copper resides in the organic matter matrix of the soils/sediments, but the Pearson correlation between OM and Cu is not significant. The authors have a choice to exclude their statistical analysis. Õâ¸ÃÈçºÎ»Ø¸´£¿ÂÛÎÄÖÐÓÐЩÍÁÈÀ/µ×ÄàÎïÀí»¯Ñ§²ÎÊý£¬ÒÔ¼°ÆäÖØ½ðÊôº¬Á¿£¬ÈçºÎ¶ÔËûÃǽøÐÐF-test»òÕ߯äËûÏÔÖøÐÔ¼ìÑéÄØ£¬Ð»Ð»£¡ £¨×¢£ºµÚ¶þÌõÖÐ˵µÄÊÇOMÐÎ̬ÔÚͺ¬Á¿ÖÐÊÇÖ÷ÒªµÄÐÎ̬£¬µ«ÊÇOMºÍÍ×ܺ¬Á¿µÄÏà¹ØÐÔ²¢²»ÊǺÜÃ÷ÏÔ£¬ËùÒÔÉó¸åÈË˵ÎÒÕâÑùµÄ½á¹ûÊÇÓÐÎóµ¼ÐԵģ© |
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5Â¥2013-05-06 15:26:14
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