An analysis of the impacts human activities have had upon an environment includes impacts on biophysical environments, biodiversity and large and small scale systems. The large scale systems consider actions that impacts atmospheric and climate dynamics. The small scale systems involve small drainage basins such as those considered in the Yukon Envirothon.
The biophysical features examine the physical impacts oin the landscape building and using infrastructure, communities, and resource extraction. The biological impacts include such things as the introduction of pollutants into a stream causing downstream biological changes. Together, these sre the biophysical impacts of human activities.
The biodiversity impacts address such topics as the reduction of biodiversity through monocultures (could be your lawn) and the introduction of invasive exotics that
The scale of human impacts ranges from the small to the extremely large, from the point source pollutant to the nonpoint source of pollutants address human impacts at different scales. Both the large and small may be significant in terms of ecological effects.
Each of these parameters are explored on the following web pages: biophysical environments, biodiversity and large and small scale systems