Urbanisation (Global Pattern)

Definition and Causes of Urbanisation

Urbanisation is the process where an increasing proportion of a country's population lives in urban areas rather than rural areas. It is a key feature of global population change and is linked to economic and social development.

Causes of urbanisation:

• Rural to urban migration: People move from the countryside to towns and cities seeking better jobs, education, healthcare, and living standards. This migration is influenced by push factors such as lack of jobs and poor services in rural areas, and pull factors like better employment and education opportunities in cities.
• Natural increase: In many urban areas, birth rates exceed death rates, leading to population growth within cities.
• Economic development: Industrialisation and growth of service industries in cities create more employment opportunities, attracting people.
• Global variations: Urbanisation rates differ worldwide. LICs (Low-Income Countries) and NEEs (Newly Emerging Economies) often experience rapid urban growth, while HICs (High-Income Countries) have slower urban growth due to already high urban populations.

For instance, in countries like India and Nigeria (NEEs and LICs), rapid industrial growth and better job prospects in cities cause many people to move from rural villages to urban centres.

Global Urbanisation Patterns

Urbanisation is not uniform across the world. Different regions show distinct patterns:

• Rapid urban growth in LICs and NEEs: Many LICs and NEEs have fast-growing urban populations due to high birth rates and rural to urban migration. Cities expand quickly, often without enough infrastructure.
• Slower urban growth in HICs: High-Income Countries already have a large proportion of people living in cities, so urban growth is slower and more stable.
• Emergence of megacities: Cities with over 10 million people, called megacities, are mostly found in LICs and NEEs due to rapid urban growth. Examples include Lagos, Mumbai, and Jakarta.
• Spatial distribution of urban areas: Urban areas are unevenly spread. Most large cities are near coasts, rivers, or areas with good transport links. For example, London is on the River Thames and near the coast, aiding trade and growth.

For example, Lagos in Nigeria has grown rapidly due to migration and natural increase, becoming one of Africa’s largest cities.

Impacts of Urbanisation

Urbanisation brings both challenges and opportunities. Understanding its impacts helps explain why managing urban growth is important.

Pressure on Housing and Services

• Rapid urban growth often outpaces the supply of affordable housing, leading to overcrowding and the development of informal settlements or slums.
• Services such as healthcare, education, water supply, and sanitation may struggle to keep up with demand.
• In LICs and NEEs, many urban residents live without access to clean water or electricity.

For example, in many fast-growing cities in LICs, slums lack basic services, causing health and safety problems.

Environmental Challenges

• Urbanisation increases pollution (air, water, noise) due to traffic, industry, and waste.
• Green spaces are often lost to development, reducing biodiversity and increasing urban heat.
• Waste management becomes difficult, leading to litter and contamination.

For instance, cities like Delhi suffer from severe air pollution partly caused by rapid urban growth and increased vehicle use.

Economic Opportunities

• Cities offer more jobs in manufacturing, services, and technology sectors.
• Urban areas tend to have better infrastructure, attracting investment and innovation.
• People can access better education and healthcare, improving quality of life.

For example, London’s diverse economy provides many job opportunities across finance, tech, and creative industries.

Social Changes

• Urbanisation can lead to cultural mixing and greater social diversity.
• However, rapid growth can cause social tensions, inequality, and crime if services and opportunities are unevenly distributed.
• Changing lifestyles and family structures are common in urban areas.

In cities like Manchester, diverse communities contribute to vibrant cultural life but also require careful planning to ensure social cohesion.

For example, a city growing from 2 million to 2.6 million people has a $30\%$ increase in its urban population.