The AD&D DMGs advise organising the wilderness in a similar way to the dungeon with easier areas for low level PCs. However this advice isn't really consistent with the wilderness encounter tables and requires additional work by the DM.
The general idea is to develop a dungeon of multiple levels, and the deeper adventurers go, the more difficult the challenges become — fiercer monsters, more deadly traps, more confusing mazes, and so forth. This same concept applies to areas outdoors as well, with more and terrible monsters occurring more frequently the further one goes away from civilization.
Perhaps an area of the nearby forest is regularly patrolled by the King’s Wardens who drive off the greater threats to the safety of the population. Lone monsters often escape their notice and sometimes raid the outlying farms. Special encounter tables can be created to reflect the lower levels of monsters that do manage to lurk in these woods, providing low-level characters with a decent but not overpowering challenge.