population concentrations and densities where’s e’r-body at?yo
TRANSCRIPT
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POPULATION CONCENTRATIONSAND DENSITIES
Where’s E’r-body At? Yo.
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First, a reminder about the macrocultural regions (there are eleven on here, but we’ll use ten)
MACROCULTURALREGIONS
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Now, some facts…
A population agglomeration is an area of population composed from a number of relatively close locations
2/3 of world’s population are located in four regions (East, South, Southeast Asia and Western Europe)
Those regions display some common site features:• Near an ocean (or river with access to one)• Low-lying• Fertile soil• Temperate climate• Northern Hemisphere between 10°N and 55°N
POPULATIONAGGLOMERATIONS
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Concentration 1: East Asia Includes Eastern China, Japan, Korean Peninsula, Taiwan20% of world population5/6 of the concentration live in Eastern, lowland China (2/3 of which are rural)1/6 in Japan and Koreas (3/4 of which are Urban… 1/3 in Tokyo, Osaka, Seoul alone)
East Asia
POPULATIONAGGLOMERATIONS
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Concentration 2: South Asia 20% of world populationIncludes India, Pakistan, Bangladesh, Sri Lanka (¾ of agglomeration are in India)Most are rural farmersOnly ¼ live in Urban areas
South Asia
POPULATIONAGGLOMERATIONS
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Concentration 3: Europe Includes Western Europe, Central Europe and European Portion of Russia11% of world population¾ of concentration live in urban areasHighest concentrations are near English, German and Belgium’s coalfieldsScarce resources in the region
Europe
POPULATIONAGGLOMERATIONS
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Concentration 4: Southeast Asia
Includes Indochina peninsula and islands between Indian and Pacific oceansHigh percentage of farmers living in rural areas
POPULATIONAGGLOMERATIONS
Southeast Asia
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Concentration 5&6: North America & Western Africa
POPULATIONAGGLOMERATIONS
5 North America
6 West Africa2% of world population clustered in Western Africa (most are rural farmers)
½ of concentration in Nigeria
2% of world population clustered on North America’s Eastern Seaboard (95% Urban)
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Compare:Population
And Climate
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Ecumene: The settled Earth (29%)
Non-Ecumene:The unsettled Earth (71%)
THE TWOEARTHS
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Dry Lands20% of Earth’s surfaceGenerally lack sufficient water to grow crops
CLIMATE REGIONS
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WetLands
Receive very high levels of precipitationCombination of rain and heat rapidly depletes soil nutrients and hinders agriculture
CLIMATE REGIONS
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ColdLands
Permanently covered with ice or permafrostReceive very little precipitation and is unsuitable for planting or livestock
South Polar Area Not Shown
CLIMATE REGIONS
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High Lands
Steep, snow covered and sparsely settledSome exceptions in Latin America and Africa
CLIMATE REGIONS
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Population Densities
No Pressure, Guys.
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Distribution is the arrangement of a feature in space
Density is the number of items occupying a given area.
Concentration is the extent of a feature’s spread over space.
Items are clustered (more concentrated) if they are tightly packed in space.
Items are dispersed (less concentrated) if they are widely spread over space.
Demographic geographers typically focus on three types of density.
A QUICKREVIEW
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Total population / total land areaGood for comparing countries
Data is easy to find
Highs… Bangladesh (1141)Singapore (7197)
Bahrain (1213)
Mids… Cuba (101)
Slovenia (101)Ghana (101)
LowsMongolia (1.7)
Iceland (3.1)Canada (3.4)
ARITHMETICDENSITY
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total population / total arable landhigh number indicates high pressure on farm land to feed the population
Highs… Belgium 3604
Puerto Rico 29,411Gaza 92307
Mids…Greece 1,110Mexico 1151Congo 1067
Lows…Finland 55
Australia 107Kazakhstan 128
Provides insight into :Relation between pop and resourcesCapacity of land to yield enough food
PYSIOLOGICALDENSITY
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Number of farmers / total arable landIlluminates economic disparity MDC v. LDCMDCs (low density) v. LDCs (high density)
Highs… Mids… Lows
AGRICULTURALDENSITY