Density modifiers

Density modifiers are global multiplicative factors that can be applied on top of a terrain's resulting density. They're accessed from that section of the terrain view:

The density results as other parameters of the application of the atlas layer, first soil and secondary soils. The resulting combination may be sometimes too strong or too weak in terms of density and the multiplicative factors in that box can help modifying the overall result of the terrain. There's one multiplicative factor for each category of plants & rocks:

Densities in a terrain are visualized using the display modes combo:

This density multiplier is the last factor applied to the terrain output. Besides it only global scene density settings can override these density outputs.