What factor does not affect wildland fires?

The altitude of the area does not significantly affect wildland fires compared to the other factors listed. While altitude can influence the climate and vegetation types in a region, it does not directly impact the fire behavior in the same way that fuel availability, wind direction, and moisture levels do.

Fuel availability refers to the amount of combustible material (such as grass, brush, or trees) that can sustain a fire. Wind direction plays a critical role in wildland fires as it can change the path of the flame and spread. Moisture levels are vital as they affect the combustibility of the fuel; lower moisture content in vegetation typically results in easier ignition and faster spread of fires. Therefore, when considering what factors contribute to the dynamics of wildland fires, altitude is less relevant than the immediate influences of fuel, wind, and moisture.