Figure A6.

The importance of the four processes in different soil pH scales in governing spatial turnover of bacterial community composition in the maize field of Northeast China. (a) The dots that represent the importance of the four processes are connected with smoothed curve. The significant mathematical models that could be fitted to the importance of variable selection (b), homogeneous selection (c), homogeneous dispersal (d) and dispersal limitation (e). We did not include the scenario “undominated” because of its low importance and ambiguous role in shaping bacterial community structure. When there were more than three models that were significantly fitted to the data, we plotted only three models with relatively higher correlation values. The numbers on the X axis indicates soil pH difference. For abbreviation, see Figure A4.