The land side should ideally have a couple of holes drilled in the bottom of the tank to ensure good drainage. Put coarse sand or washed aquarium gravel in the bottom to a depth of about two inches. Top this with a piece of turf or clumps of moss. Some small potted terrestrial plants may be planted on this side. You will need a fitted lid for the tank.
Salamanders can climb, using body secretions for suction.
The lid is also a useful place on which the required lighting can be placed. Set up the tank as for the land area above, but use the entire tank. Terrestrial sallies do require high humidity, so plants and moss will help achieve this, as will a dish of water. The evaporation will help maintain humidity levels. As with the vivaria, the terraria also requires a lid.