Unit 2 Review

Resources Used

• 2.1 - Heimler’s, Fiveable

• 2.2 - Heimler’s, Fiveable

• 2.3 - Heimler’s, Fiveable

• 2.4 - Heimler’s, Fiveable

• 2.5 - Heimler’s, Fiveable, AP Textbook

• 2.6 - Heimler’s, Fiveable

• 2.7 - Heimler’s

• 2.8 - Heimler’s, AP Textbook

• 2.9 - Heimler’s, Fiveable, AP Textbook

• 2.10 - Heimler’s, Fiveable, AP Textbook

• 2.11 - Heimler’s, Fiveable

• 2.12 - Heimler’s, Fiveable

Key Concepts

• Population Distribution: Patterns of human habitation on Earth's surface; only 5% of Earth is inhabited despite 30% being land.

• Ecumene: Areas of permanent human settlement.

• Factors influencing Population Distribution:

  • Climate: Milder climates attract more populations (30-60 degrees latitude).

  • Landforms: Lowland areas are preferred over mountains for habitation and agriculture.

  • Water: Proximity to water bodies promotes settlement.

  • Culture: Access to amenities like education and healthcare drives settlement.

  • Economics: Job availability attracts people.

  • History: Past settlements affect current population distribution.

  • Politics: Political stability or policies can push or pull populations.

Population Density

• Population Density: Measure of people per unit area; indicates how densely populated areas are.

  • Arithmetic Density: Total population divided by total land area, can be misleading.

  • Physiological Density: Population divided by arable land, a better measure of population pressure on food supply.

  • Agricultural Density: Number of farmers divided by arable land, indicates intensity of agricultural labor.

Migration

• Migration: Movement of people across regions, influenced by push (negative) and pull (positive) factors.

  • Push Factors: War, disasters, persecution, etc.

  • Pull Factors: Economic opportunities, freedom, etc.

  • Types of Migration:

  • Forced Migration: Relocations due to factors like slavery, environmental disasters, persecution.

  • Voluntary Migration: Relocations based on individual choice; includes transnational, chain, step, and guest worker migrations.

Consequences of Population Changes

• Aging Population: Increasing elderly proportion leads to shifting political power, economic burdens, and social changes.

• Political Effects: Changes in voting patterns, representation, and immigration laws.

• Economic Effects: Labor supply shifts, dependency ratios, potential brain drain from emigration.

• Cultural Effects: Introduction of diverse cultures can enhance tolerance or lead to conflicts.

Theories and Models

• Malthusian Theory: Population grows exponentially while food production grows arithmetically, leading to potential overpopulation crises if unchecked.

• Demographic Transition Model (DTM): Describes stages of population growth relating to economic development, typically divided into five stages from high birth/death rates to low rates with stable population.

• Epidemiological Transition Model (ETM): Focuses on changes in mortality rates and causes, corresponding with the DTM stages.

Policies Affecting Population

• Anti-Natalist Policies: Encouragement to have fewer children (e.g. China’s one-child policy).

• Pronatalist Policies: Incentives to encourage higher birth rates, especially in aging populations.

• Immigration Policies: Regulations affecting movement of people, impacting labor markets and cultural diversity.

Conclusion

Understanding the dynamics of population distribution, density, migration, and demographic change is crucial for comprehending human geography and societal development.