Figure Caption

Figure 1 Study area and experiment plots set

Figure 2 Plot-scale hydrological connectivity indices.

Figure 3 PCA and grouping analysis based on the plant traits

Figure 4 Regression analysis between plant traits and hydrological connectivity indices

Figure 5 PCA and grouping analysis based on the spatial structure. T-Number refers to the number of Delaney triangles in each plot, T-Area refers to the mean triangle area in each plot, T-Perimeter refers to mean triangle perimeter in each plot and SCI refers to the structure complex index of each plot.

Figure 6 Regression analysis between spatial structures and hydrological connectivity indices

Figure 7 RDA results of environment variables with plots distribution. Figure 7A gives the relation between plant traits and variables. Figure 7B gives the relation between spatial structures and variables.

Figure 8 Group regression between population density/spatial structure size and hydrological indices based on the biomass.