1 population distribution: where people like to live or settle? by people we mean groups or...
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Population Distribution:where people like to live or settle?
•By people we mean groups or populations – not individual families
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Four Factors Influence Distribution & Settlement:
1. Water – rivers, coastal areas, lakes2. Fertile Soil - landforms – to grow crops3. Mild Climates – for longer growing
seasons: more crops4. Natural Resources – like trees, minerals,
access to fresh water
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Early Civilizations Are Found where factors combine
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#1 - Access to Water
• Rivers, lakes, coastal areas
• Natural roads for trade and travel
• Drinking Water• Water for Crops• Food from the water
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Yangtze River in China
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#2 - Fertile Soil & Landforms
• Grow food easily• Grow larger quantities
of food• River Valleys• Flat land - plains• Easy to build shelters
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Fertile Soil
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#3 - Mild Climate Types
• Snow is rare in Mild Climate Types
• Precipitation is moderately high
• Subgroups are:– Mediterranean
– Humid Subtropical
– Marine West Coast
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Mild Climates
• Longer growing seasons
• Multiple growing seasons
• Mild climates have the most varied crops
• Easier to raise animals
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#4 - Natural Resources
• Forests for building shelters and homes
• Forests provided fuel• Fresh Water important• Supply of fish for food• Minerals to make
products• Natural Resources are
useful for trade
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Areas With Lower Populations
• Poor Soil• Mountains and
Highlands• Cold Climates• Areas with few natural
resources• Areas that are hot &
dry
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Fertile Crescent
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The Nile River Valley
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Indus River Valley of India and Pakistan
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Density & Distribution
• Distribution is how population is spread over an area – densely or sparsely
• Density is the average number of people in a given area – usually expressed as per mile
• Density is always a number
New York City Housing
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World Population Distribution
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Canada’s Population Distribution
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U.S. Population Densitythe darkest areas have the highest
population densities
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Other Areasgenerally less densely populated
• Some populations developed in other areas– Mountains
– Deserts
– Cold climates
– Lack of ResourcesInuit People of the Arctic
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Often One Negative Factor is Present but is offset by other
positive factors
Aztec Civilizations of the Mexican Highlands
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Living in the Desert
• People adapt to their environment
• Population Density is low
• Raising of animals who are adapted to the environment
In the Sahara Desert