What constitutes a change of use in a buffer zone?

A change of use in a buffer zone typically refers to any activity or alteration that impacts the way the land is utilized or its ecological functions. The addition of impervious surfaces, such as driveways, buildings, or parking lots, significantly affects water absorption and increases runoff, which can harm the vegetation and wildlife in the buffer area. This alteration not only changes how the land interacts with its environment but can also lead to increased pollution and habitat degradation, marking it clearly as a change of use.

In contrast, the other options do not represent a change in usage patterns. Maintaining existing agricultural operations does not alter the intended use of the land but rather continues its current role. Allowing natural wildlife migration acknowledges and supports existing ecological processes without modifying the land, thus it does not constitute a change. Similarly, the formation of natural land elevations may occur naturally and does not indicate any alteration in the intended use or function of the buffer zone. Hence, the addition of impervious surfaces is the only option that signifies a clear change of use in this context.