an increasing trendp < 0.01
The THg and MeHg concentrations in the topsoil show an increasing trend with altitude ( r 2 = 0.68–0.71, p < 0.01 for both) ( Fig. 1 ).
The THg and MeHg concentrations in the topsoil show an increasing trend with altitude ( r 2 = 0.68–0.71, p < 0.01 for both) ( Fig. 1 ).