What methods can be used to study anthropogenic impact on natural systems?

Anthropogenic impact, as a rule, occurs under the influence of human factors. Methods for studying the effect of these factors can be varied, it all depends on what exactly we will take for analysis. For example, let the object of study be the most ordinary river.

The first research method is observation. Here we pay attention to the degree of pollution of the river (waste from factories, garbage, etc.), the number of fish living in this river.

The second research method is experimental. We set up an experiment during which you can compare quantitative indicators.

The third research method is theoretical. We can assume how the anthropogenic factor affects the river vegetation.