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. 2013 Jan 14;8(1):e53878. doi: 10.1371/journal.pone.0053878

Table 1. Significance of impacts of year, stand types and their combined effect on CH4 emission and environmental factors in growing season.

Year Stand types The combined effect of year and stand
CH4 emission ** ** *
Surface temperature ** ns ns
5 cm temperature ** ns ns
10 cm soil temperature ** ns ns
The standing water depth * ** **
*

Significant impact P<0.05;

**

highly significant impact, P<0.01; ns, no significant impact.