{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lecture 8-27-08

Lecture 8-27-08 - Environmental Sciences and Society An...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Environmental Sciences and Society: An Overview Key Issues Population growth - how many people? Resource use? Land use? Global change (climate + direct human alterations) The BIG THREE: Energy, Water, Food Increased energy use, fossil fuels, and impacts Increased demand for freshwater, human/ecol health Food production/distribution inefficiencies, impacts
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
When human populations were small and dispersed, their impact on the landscape was minimal
Background image of page 2
Human traces were minor
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
A Quichua garden (called a “chakra”) created by clearing a patch in the rainforest, planting vegetables among the downed trees to grow in the soil nutrients. Chakras were abandoned after several years, new ones cleared. Sustainable only with low population densities.
Background image of page 4
A Bedouin encampment in the Negev desert: nomadic pastoral agriculture. Several thousand years of heavy livestock grazing has degraded the landscape.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Contemporary western society: concentrated urban centers, requiring massive inflow of resources from the surrounding region.
Background image of page 6
Some past complex civilizations have collapsed.
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}