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Transcript of Population
Where we settle and why
So where do humans like to settle? And how does human behavior effect population density?
the number of people who live in a square mile/kilometer (total land area)
People tend to move where a population already exists
How is land used in areas of different density and why?
The most densely populated areas often seen near lines of transportation/migration
Urban Land Use
has a high density because there are more job opportunities and a need for a larger population to sustain its productivity
Agricultural Land Use
Developing countries often have an agricultural economy and therefore require more arable land to farm. These areas are less densely populated
In the US, many cities are found off of major highway and interstate systems, where goods and services are often provided along internal shipping routes
Humans like to make money, and they'll move to locations where they can be connected to the global economy...these are mostly located on the coastline (66% live within 300 miles of the coast)
2/3 of the world's inhabitants are clustered in 4 regions: East Asia, South Asia, Southeast Asia, and Western Europe
East Asia: 20% of human race lives in China, Taiwan, Japan, and Korea
South Asia: 20% of human race lives in India, Pakistan, and Indonesia
The US does not have a high population density, but we are the 3rd most populated country with 300,000 million (83 people per square mile)
The US population is highly concentrated in urban centers (80%) and along the East Coast (56%). The US coastal zone is only 17% of the land area of the United States, yet its population outnumbers the interior by 16 million.
In this case, Australia has a low arithmetic density, even though it has a population of 23 million people...by equation, you find 8 people per mile...HOWEVER...there's not nearly enough arable land to support the population.
Population (arithmetic) Density: the number of people per total land available (square miles). Japan has an incredibly high population density.
Equation: Arithmetic Density = Total Population / Total Land Area (sq miles or kilometers)
For example, the Japanese island of Honshu has 88,000 miles of land and a population of 103 million. That would leave you with a population density of...?
Where Are We Concentrated?
Where do we find most humans concentrated today? How might the use of various densities effect the way in which we view population distribution?
And this all changes again if we use different means of density. (arithmetic v. physiological).
Egypt: Arithmetic (75 people/square mile) and Physiological (2,850 per square mile)
What does this tell us about the amount of land suitable for agriculture?
Is it possible to overcome your
The Dutch have: polders, or a series of dykes and levies, have reclaimed much needed land for farming and urbanization.
The Japanese have: micro hotels and micro homes provide housing accommodations to thousands in highly populated cities like Tokyo
1170 persons per square mile!!!
Physiological Density: describes the relationship between the size of the population and the availability of resources in a region.
Arable land: land that can be farmed
Equation: Physiological Density = total number of people / amount of arable land (square miles).
HOWEVER, looking more closely, we find that the population of Honshu is not evenly distributed. Where is it clustered?
Japan has an even higher physiological density considering its geography. Because arable land is limited in Japan, the Japanese government must worry about feeding its people. Its enormous population is putting pressure on the increasingly smaller amount of arable land.
Crops grown on 1 acre of land in Japan must feed 5800 Japanese....and there isn't much land.
Crops grown on 1 acre of land in America feed 35 Americans. There's plenty of arable land in American to support its population.
Which country places a greater strain on the environment?
The higher the physiological density, the greater the pressure that people may place on the land to produce enough food.
World Population 7.1 Billion
10 Most Populous States
1. China: 1.4 Billion
2. India: 1.3 Billion
3. US: 321 million
4. Indonesia: 255 million
5. Brazil: 204 million
6. Pakistan: 199 million
7. Nigeria: 181 million
8. Bangladesh: 168 million
9. Russia: 142 million
10. Japan: 127 million
the number of people who live in a square mile/kilometer of arable (farming) land
True reading of how the land can support a population