human population issues. human impact model i = pats models are simplified representations of...
TRANSCRIPT
![Page 1: Human Population Issues. Human Impact Model I = PATS Models are simplified representations of complex systems. Models can be precise or conceptual. This](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56649f045503460f94c18666/html5/thumbnails/1.jpg)
Human Population Issues
![Page 2: Human Population Issues. Human Impact Model I = PATS Models are simplified representations of complex systems. Models can be precise or conceptual. This](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56649f045503460f94c18666/html5/thumbnails/2.jpg)
Human Impact ModelI = PATS
• Models are simplified representations of complex systems.
• Models can be precise or conceptual.
• This model is conceptual, to guide your thinking about human impact and sustainability.
![Page 3: Human Population Issues. Human Impact Model I = PATS Models are simplified representations of complex systems. Models can be precise or conceptual. This](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56649f045503460f94c18666/html5/thumbnails/3.jpg)
I = PATS• I is the impact of humans on the environment• P is the population of humans in the affected
environment• A is the affluence level of the human population• T is the technologies that the human population
is using• S is the sensitivity of the environment to human
disturbance
![Page 4: Human Population Issues. Human Impact Model I = PATS Models are simplified representations of complex systems. Models can be precise or conceptual. This](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56649f045503460f94c18666/html5/thumbnails/4.jpg)
Population
• Population growth is the root of many environmental problems, although it is NOT the only root.
• There is a carrying capacity for humans based on environmental limitations
• Our technology has increased human carrying capacity, but there have been other consequences to these increases.
![Page 5: Human Population Issues. Human Impact Model I = PATS Models are simplified representations of complex systems. Models can be precise or conceptual. This](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56649f045503460f94c18666/html5/thumbnails/5.jpg)
Human carrying capacity
![Page 6: Human Population Issues. Human Impact Model I = PATS Models are simplified representations of complex systems. Models can be precise or conceptual. This](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56649f045503460f94c18666/html5/thumbnails/6.jpg)
Affluence
• Affluence means quality of life. • In terms of environmental impact it is often
proportional to the amount of natural resources that an individual (or country) uses.
• Higher affluence often correlates with higher environmental impact
• The gap between rich and poor societies is a cause of social and environmental stress
![Page 7: Human Population Issues. Human Impact Model I = PATS Models are simplified representations of complex systems. Models can be precise or conceptual. This](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56649f045503460f94c18666/html5/thumbnails/7.jpg)
Consumption leads to waste
![Page 8: Human Population Issues. Human Impact Model I = PATS Models are simplified representations of complex systems. Models can be precise or conceptual. This](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56649f045503460f94c18666/html5/thumbnails/8.jpg)
Rich vs. poor
![Page 9: Human Population Issues. Human Impact Model I = PATS Models are simplified representations of complex systems. Models can be precise or conceptual. This](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56649f045503460f94c18666/html5/thumbnails/9.jpg)
Ecological Footprints
![Page 10: Human Population Issues. Human Impact Model I = PATS Models are simplified representations of complex systems. Models can be precise or conceptual. This](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56649f045503460f94c18666/html5/thumbnails/10.jpg)
Technology -what do you think?
• How does technology make human impact greater?
• How can technology reduce human impact?
![Page 11: Human Population Issues. Human Impact Model I = PATS Models are simplified representations of complex systems. Models can be precise or conceptual. This](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56649f045503460f94c18666/html5/thumbnails/11.jpg)
Sensitivity
• Sensitive environments are more affected by a given amount of human activity
• Sensitive environments include deserts, grasslands, and tundras
• Luckily, humans populations are not very dense in these types of environments
![Page 12: Human Population Issues. Human Impact Model I = PATS Models are simplified representations of complex systems. Models can be precise or conceptual. This](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56649f045503460f94c18666/html5/thumbnails/12.jpg)
Another representation…
• In Industrial Ecology, IPATS is couched as the “Master Equation:”
• In this form we can see the opportunity for improvement lies in the technology term, environmental impact per unit GDP