The Dynamics of Population Growth in Los Angeles and its Suburbs
1. What was the population density of Los Angeles in 2014 in persons/hectare? 2. How many people did Los Angeles add the following year? 3. How many hectares did Los Angeles gain the following year? 4. How many years will it take for the population of Los Angeles to double growing at the 2014 rate? 5. What is the population size of the suburban city near Los Angeles? 6. How many years for this city to double in population with a growth rate of 3.2%?
Population Density of Los Angeles
Population density = Population / Urban extent
Population density = 15,138,973 / 585,012 = 25.89 persons/hectare
Population Growth in Los Angeles
To find out how many people Los Angeles added:
Population growth = Population * Growth rate
Population growth = 15,138,973 * 0.005 = 75,695 people
Urban Expansion of Los Angeles
To determine the number of hectares Los Angeles gained:
Urban extent growth = Urban extent * Growth rate
Urban extent growth = 585,012 * 0.004 = 2,340 hectares
Population Doubling Time
To calculate the number of years for Los Angeles to double its population:
Doubling Time = 70 / Growth Rate
Doubling Time = 70 / 0.005 = 140 years
Population Size of Suburban City
To calculate the population size of the suburban city near Los Angeles:Population density = 1231.23 people/km2 = 1231.23 people / 100 hectares = 12.3123 people/hectare
Population size = Population density * Area
Population size = 12.3123 * 136.8 = 1681.29 people
Population Growth in Suburban City
To calculate the number of years for the suburban city to double in population:Doubling Time = 70 / Growth Rate
Doubling Time = 70 / 0.032 = 2187.5 years