Understanding Population Density and Its Influencing Factors

Highest Density of Population: Africa / America / Asia / Europe / Oceania

• Physical Factors: Flat relief, climate, suitability for agriculture, drinking water.
• Historical and Political Factors: The process of land occupation, land ownership, population policies (birth control, incentives or restrictions, etc.).
• Economic Factors: Natural resources, industrial facilities, communication facilities, proximity to the sea.

Population Density: Number of inhabitants per area, inhabitants / km ².

Levels of Population Concentration:

• Demographic Vacuum: (less than 1 sq/km ²): Land that is cold, arid, hot, and humid (Deserts: white, yellow, green).
• Intermediate Zones: (between 1 and 50 inhabitants / km ²): Regularly occupied areas that encourage high concentrations (Pacific, Anglo-Saxon central plains, central plains of South America, highlands of the Andes).
• Spotlights of Concentration: (more than 50 inhabitants / km ²): Increased focus (East Asia), second focus (South Asia), third outbreak (Europe), fourth outbreak (northwestern North America), large cities (Buenos Aires, Mexico City, St. Paul, etc.).

Census is the count of the entire population at a given time and recording features, followed by necessary actions.

Demographics:

• Natural Increase: The difference between births and deaths in a given period.
• Migratory Growth: The difference between immigration and emigration.
• Total Growth: Sum of natural growth and migration.
• Birth Rate: Number of births per 1000 people in one year.
• Mortality Rate: Number of deaths per 1000 inhabitants in one year.
• Infant Mortality Rate: Number of children dying before the first year of life, relative to the number of births produced.
• Life Expectancy: Calculation of average years of life.
• Population Pyramids: A graph that allows observation of the age-sex structure of a population at a given time. The analysis reflects the demographic history, current structure, and future prospects of a population.
• Pyramid Progressive or Expansive (Eiffel Tower): Indicates high birthrate and high mortality. Base width and rapid decline towards the top. Low percentage of elderly (Developing countries).
• Pyramid Stationary or Stable (Campana): Moderate to weak birthrate and low mortality. Equality between young people and adults. High percentage of elderly.
• Pyramid Regressive (Urn): Low mortality and low birth rates. Increased young adult population. Significant number of elderly.