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Environmental Science Chapter 14 Land
Terms in this set (19)
Land cover is what you find on a patch of land and often depends on
on how the land is used.
Examples of Land Cover
Forest, a Field of grain or a parking lot
2 Types of Land
1. Urban 2. Rural
Urban Land is defined by the U.S. Census Buereau as and Urban Area
area that contains 2, 500 or more people and usualluy has a governing body such as a city council. Any population not classified as urban is rural
Land that contians few people and large areas of open space are rural areas.
Land Use Categories
Rangeland, forest, cropland, urban land, etc.
U.S. Land Use:
20% of land is used for cropland, forest, and rangeland/pasture
Urban Land Use in the U.S.
Until 1850 mostly the U.S. was mostly rural. The Industrial Revolution began and allowed for
1. Machinery made it possible for fewer people to operate a farm or grainmill.
2. Better Transportation: allowed manufacturers to be located far from their customers.
So, more people moved from rural areas to urban areas to find jobs.
In developed countries this happened very rapidly from 1880-1950 and this is now occurring in developing countries at even faster rate especially in
Urban-Rural Connection: The majority of all resources we depend on come from rural land known as
Examples of Ecosystem Services:
clean drinking water, fertile soil and land for crops, trees for wood and paper and much of the oxygen we breathe which is produced by plants.
The 8 Ecosystems Services from Table 2
1. Purification of air and water
2. Preservation of soil and renewal of soil fertility
3. Regulation of climate
4. Maintenance of biodiversity
5. Movement and cycling of nutrients
6. Detoxification and decomposition of wastes
7. Aesthetic Beauty
Ecological Footprint is the amount of rural land needed to support one person.
Ecological Footprint Measurement Depends on many factors such as:
Climate, standard of living and how efficiently resources are used.
Per Capita Hectares of Land
Developed Countries: 8 hectares of land
U.S.: 12 hectares
Germany: 6 hectares
Developing: less than 1 hectare
Explain why the U.S. has a significanlty larger per capita ecological footprint than other developed or developing countries.
Provide a specific example from your lifestyle in your answer.
We have a larger population and more pollution and do not use our resources as efficiently as we could.
I could convserve more energy by always turning out the lights when I leave a room. I could consume less water by turning off the water faucett while I'm brushing my teeth.
What cold we do individually to reduce the loss of ecosystem services per person as the world population grows?
We could be content to downsize and live in smaller houses, use less energy and plant our own food.
The Earth contains about 12.4 billion hectares of prodcutive land- cropland, grazing land, forest, freshwater and fisheries. In 1996, world population was 5.7 billion people with an average of 2.18 hectares of productive land per person. By the end of 2011 through January 2012, world population has reached 7 billion.
Calculate the average amount of productive land per person that is available today.
1.77 productive land available per person today
12.4 billion of hectares of productive land divided by 7 billion equals approximately 1.77 of productive land per person available today.
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