Human Geography 101: Urban Geography - Urbanization Trends Urban Population Growth Megacities Suburbanization Counterurbanization

What This Is

Urbanization Trends refer to the changes in the way people live, work, and interact with their environment as cities grow and evolve. Understanding these trends is crucial for grasping the complex relationships between human populations and their environments. For example, the rapid growth of cities in China has led to the development of megacities like Shanghai, which now has over 24 million residents. This phenomenon is not only a result of rural-to-urban migration but also a reflection of China's economic development and urbanization policies.

Key Models, Theories & Terms

• Demographic Transition Model (DTM): A five-stage model linking population growth to economic development (Stage 1: high CBR & CDR-… Stage 4: low CBR & CDR) – explains why some countries still have high birth rates. For instance, many African countries are still in Stage 2, with high birth rates and low life expectancy.
• Von Thünen’s Model of Agricultural Land Use: Concentric rings around a city (dairy, forest, grains, livestock) determined by transportation costs – explains where different crops are grown. This model helps us understand why some cities have a strong focus on agriculture, like the dairy farms surrounding Chicago.
• Burgess Concentric Zone Model: A model describing the growth of cities in concentric zones, with the central business district at the center and residential areas farther out – explains the structure of cities like New York or London. This model helps us understand the relationship between land use and transportation costs.
• Central Place Theory: A theory explaining the spacing of towns and cities based on their economic functions and transportation costs – explains why some cities are hubs for trade and commerce. For example, cities like Chicago or Paris have a strong central place function due to their strategic location and transportation networks.
• Suburbanization: The process of people moving from urban centers to surrounding suburbs, often driven by factors like housing affordability and access to amenities – explains the growth of suburbs in the United States. This phenomenon is often linked to the development of highway systems and the rise of the automobile.
• Counter-urbanization: The process of people moving from urban centers to rural areas, often driven by factors like a desire for a more rural lifestyle or access to natural resources – explains the growth of rural areas in countries like the United States or Australia. This phenomenon is often linked to the development of rural tourism and the rise of the service sector.
• Megacities: Cities with a population of over 10 million people, often characterized by high levels of urbanization and economic growth – explains the growth of cities like Tokyo, Shanghai, or Mumbai. These cities often face challenges related to infrastructure, housing, and environmental sustainability.
• Urban Sprawl: The process of cities expanding outward, often driven by factors like suburbanization and the development of low-density housing – explains the growth of cities like Los Angeles or Houston. This phenomenon is often linked to the rise of the automobile and the decline of public transportation.
• Gentrification: The process of wealthier residents moving into previously low-income neighborhoods, often driven by factors like urban renewal and gentrification policies – explains the growth of neighborhoods like Brooklyn's Williamsburg or London's Shoreditch. This phenomenon is often linked to the rise of the creative class and the decline of traditional manufacturing industries.

Step-by-Step Application

1. Identify the dominant migration pattern: When analyzing a map or data on population growth, identify the type of migration that is occurring (e.g., rural-to-urban, urban-to-rural, international).
2. Describe the urban model: When analyzing a city's structure, describe the dominant urban model that is at play (e.g., Burgess Concentric Zone Model, Urban Sprawl).
3. Explain the factors driving urbanization: When analyzing a city's growth, explain the factors driving urbanization (e.g., economic development, migration, access to amenities).
4. Compare urbanization trends: When comparing two or more cities, compare their urbanization trends and explain the differences (e.g., population growth, migration patterns, economic development).
5. Analyze the impact of urbanization: When analyzing the impact of urbanization, explain the effects on the environment, economy, and society (e.g., air pollution, gentrification, social inequality).

Common Misconceptions

• Misconception: All migration is permanent.
• Correction: Migration can be temporary or permanent, and it is often influenced by factors like economic conditions, family ties, and access to education and employment.
• Misconception: GDP per capita is the same as standard of living.
• Correction: GDP per capita is an economic indicator that measures the average income of a country's citizens, while standard of living is a broader measure of well-being that takes into account factors like access to education, healthcare, and housing.
• Misconception: Rank-size rule applies to every country.
• Correction: The rank-size rule is a statistical law that describes the distribution of city sizes in a country, but it does not apply to every country, and it is often influenced by factors like economic development, transportation costs, and cultural factors.

AP Exam / Free-Response Tips

• FRQ scoring: When writing a free-response question, make sure to address all parts of the question and provide clear, concise answers that demonstrate a deep understanding of the topic.
• Task verbs: When writing a free-response question, use task verbs like "identify," "describe," "explain," and "compare" to guide your answer and ensure that you are addressing all parts of the question.
• Tricky distinctions: When writing a free-response question, be aware of tricky distinctions like "ethnicity vs nationality," "site vs situation," and "centripetal vs centrifugal forces," and make sure to use them correctly in your answer.
• Model integration: When writing a free-response question, make sure to integrate relevant models and theories into your answer to demonstrate a deep understanding of the topic.

Quick Practice Scenario

A megacity in a developing country grows rapidly as rural residents move in for factory jobs. Identify the dominant migration pattern and one likely urban model that describes its structure.

Answer: The dominant migration pattern is rural-to-urban migration, and one likely urban model that describes its structure is the Burgess Concentric Zone Model.

Explanation: The Burgess Concentric Zone Model is a model that describes the growth of cities in concentric zones, with the central business district at the center and residential areas farther out. This model is likely to describe the structure of a megacity that is experiencing rapid growth due to rural-to-urban migration.

Last-Minute Cram Sheet

• Demographic Transition Model (DTM): A five-stage model linking population growth to economic development.
• Von Thünen’s Model of Agricultural Land Use: Concentric rings around a city determined by transportation costs.
• Burgess Concentric Zone Model: A model describing the growth of cities in concentric zones.
• Central Place Theory: A theory explaining the spacing of towns and cities based on their economic functions and transportation costs.
• Suburbanization: The process of people moving from urban centers to surrounding suburbs.
• Counter-urbanization: The process of people moving from urban centers to rural areas.
• Megacities: Cities with a population of over 10 million people.
• Urban Sprawl: The process of cities expanding outward.
• Gentrification: The process of wealthier residents moving into previously low-income neighborhoods.
• Ethnicity vs nationality: Ethnicity refers to a person's cultural or linguistic identity, while nationality refers to a person's citizenship or passport.
• Site vs situation: Site refers to the physical location of a city or building, while situation refers to the broader social and economic context in which it exists.
• Centripetal vs centrifugal forces: Centripetal forces refer to the forces that pull people towards a city or center, while centrifugal forces refer to the forces that push people away from a city or center.