At regular intervals in an evenly spatial context + example of distance between locations
It is a more straightforward sampling method than using a random sampling technique.
It ensures a good coverage of the area compared to other sampling techniques
How could it be considered biased?
As not all areas on the slope have an equal chance of being selected.
On a slope with varying angles, it is possible that specific things, for example, plants could be overlooked due to their position.
How are important features being missed out on impact results?
leading to an over or under representation of a particular pattern
Random sampling is entirely random so it could miss out on larger sections of the study area meaning systematic sampling allows for a better representation of data.
It is hard to identify proportions of soil depth, or average hight of plant species on the slope so stratifies sampling may be unsuitable
It may be hard to stratify soil depth, moisture, and plant height if that data is not available
