Figure 6 Water pollution level (WPL) for nitrogen (N, top) and phosphorus (P, bottom) of major river basins in SA for the year 2000 (own elaborationbased on Liu et al., 2012)
Figure 6Water pollution level (WPL) for nitrogen (N, top) and phosphorus (P, bottom) of major river basins in SA for the year 2000 (own elaborationbased on Liu et al., 2012)