Introduction
In this topic, you will learn about the meaning of settlement, different types and characteristics of settlements, their functions and importance, how settlements grow, and ways to solve problems caused by urban growth.
Objectives
By the end of this topic, you should be able to:
- Define settlement
- Explain categories, types, and characteristics of settlements
- Describe the functions of settlements and their importance
- Analyse factors that lead to the growth of settlements
- Assess social and economic problems associated with urban growth
- Suggest ways of solving problems related to urban growth
Concept of Settlement
A settlement is a place where people live and carry out their daily activities. It can also be defined as a location or group of housing units where people live together. These housing units include not only homes but also schools, hospitals, factories, churches, warehouses, and other buildings.
Settlements range in size from a single isolated house in a remote area to huge megacities. Every settlement has two important aspects:
- Site: The actual piece of land on which the settlement is built.
- Location (Situation): The position of the settlement in relation to surrounding areas. For example, Dar es Salaam is sited on the coastal plain but located in the eastern part of Tanzania.
Settlements can be permanent (long-lasting) or temporary (short-term). A refugee camp is a good example of a temporary settlement, though some eventually become permanent over time.
Categories, Types and Characteristics of Settlements
There are two main types of settlements: Rural and Urban. They differ in size, population density, and the main economic activities people carry out.
Rural Settlements
In countries like Tanzania, the basic unit of a rural settlement is the homestead. These are often occupied by people of the same family or kinship group, and agriculture is their main activity. About 80% of Tanzania’s population lives in rural areas. Many also engage in other activities such as fishing, weaving, carving, and timber harvesting to support their farming.
Characteristics of Rural Settlements:
- Houses are scattered and often located several kilometres apart.
- Agriculture (farming and livestock keeping) is the main economic activity.
- Houses are mostly simple — many are thatched with grass, while a few have iron sheets. Most are built with mud.
- There are many temporary structures and only a few permanent buildings, some inherited within families.
Urban Settlements
Urban settlements are densely populated areas with many man-made structures. They serve as centres for administration, culture, religion, trade, commerce, and industry. People of different backgrounds live together, and buildings are usually close to one another.
Characteristics of Urban Settlements:
- High population density.
- Main activities include trading, manufacturing, services, and industrial work.
- Continuous built-up areas with many permanent buildings.
- Boundaries can change over time as construction expands.
- Urban boundaries do not always follow administrative borders.
Categories of Settlement Patterns
Settlement patterns describe how houses and buildings are arranged in an area. There are three main patterns:
1. Scattered (Dispersed) Settlement Pattern Houses are spread out randomly over a wide area, often separated by valleys, rivers, or ridges. This pattern is common in rural areas where land is plentiful.
Factors leading to scattered settlements:
- Plenty of available land
- Poor or infertile soils
- Harsh climate (e.g., arid and semi-arid areas)
- Presence of pests and diseases
- Physical barriers like hills and rivers
2. Nucleated (Clustered or Compact) Settlement Pattern Houses and buildings are grouped closely together in a small area. This is typical in towns and cities, but can also occur in some rural villages.
Factors leading to nucleated settlements:
- Availability of social services (schools, hospitals, water)
- Presence of industries, minerals, or other resources
- Limited land for expansion
- Need for security
- Fertile soils and favourable climate for farming
3. Linear Settlement Pattern Buildings are arranged in a straight or curved line along a feature such as a road, river, railway, or coastline.
Factors leading to linear settlements:
- Transport routes (roads or railways)
- Rivers or water sources
- Coastlines suitable for fishing
- Suitable land for farming along slopes or valleys
Functions of Settlements and Their Importance
Functions of Settlements These are the main activities that take place in a settlement. While many settlements perform several functions, one is often dominant.
Common functions include:
- Market towns — centres for buying and selling goods and services.
- Mining towns — developed around mineral resources (e.g., diamonds, coal).
- Industrial towns — focused on manufacturing and processing.
- Route centres — located at important transport junctions.
- Administrative centres — provide government services at regional or national levels.
- Port centres — handle import and export of goods and passengers.
- Resort centres — places visited mainly for tourism and recreation.
Importance of Settlements Well-planned settlements bring many benefits:
- Availability of Social Services: Concentrating people in one place makes it easier and cheaper for governments and NGOs to provide schools, hospitals, water, electricity, and transport.
- Enhanced Security: People are safer when living together. It is easier to defend a group and for the government to provide policing.
- Economic Development: Settlements attract banks, industries, and markets. They create opportunities for employment, business, and sharing of resources. People can support each other economically.
- Political Services: It becomes easier for citizens to participate in elections, rallies, and community decision-making.
Growth of Settlements
The growth of settlements refers to the expansion and increase in size of places where people live and carry out economic activities. Settlement growth is dynamic — it changes constantly over time due to various factors such as population increase, economic opportunities, and improved infrastructure.
Factors that Lead to Growth of Settlements
Settlements grow and expand in certain areas due to a combination of favourable conditions. These factors are generally grouped into two main categories: Physical Factors and Human Factors.
1. Physical Factors
These are natural conditions that influence where and how settlements develop.
(a) Climate Areas with sufficient and reliable rainfall tend to have more settlements because they support crop cultivation and livestock keeping. On the other hand, arid and semi-arid areas with very low rainfall and high temperatures have few settlements because farming is difficult.
(b) Soil Fertile soils that receive adequate rainfall attract many people because they are good for agriculture. Settlements on fertile lands usually grow faster and become more densely populated than areas with poor soils.
(c) Topography Gentle slopes with good drainage are ideal for building houses and roads. Very steep areas are avoided because construction is difficult and risky. Extremely flat areas may also be less attractive due to flooding and poor drainage. Sun-facing slopes and windward sides of highlands are often preferred because they receive more rainfall and warmth.
(d) Availability of Water Access to clean and reliable water is essential for human and livestock survival. Settlements tend to grow near rivers, lakes, springs, and other water sources. For example, areas like Rungwe in Mbeya have grown rapidly due to abundant water, while arid places like Longido have slower settlement growth. Swampy areas are generally avoided because of flooding and breeding grounds for mosquitoes.
(e) Availability of Land Plenty of suitable land encourages settlement expansion, while limited land restricts growth.
(f) Natural Resources The presence of minerals, fish, or other resources attracts people. Mining towns such as Mwadui (Shinyanga) and Nyamongo (Tarime) grew because of mineral deposits. Fishing settlements have also developed along Lakes Victoria, Nyasa, Tanganyika, and the Indian Ocean coast.
(g) Vegetation Dense forests and thick vegetation usually discourage settlement because clearing land is difficult. Some forests are government reserves where settlement is prohibited. Tsetse fly-infested woodlands also limit settlement.
(h) Pests and Diseases Areas free from pests and diseases attract more people, while places infested with mosquitoes (malaria) or tsetse flies (sleeping sickness) are often avoided.
2. Human Factors
These include activities and decisions made by people and governments.
(a) Historical Factors Past events such as slave trade and inter-tribal wars left some areas sparsely settled. People fled from raided or war-prone zones, and many of those areas have never fully recovered.
(b) Political Factors Civil wars and conflicts cause people to abandon areas, slowing settlement growth (e.g., parts of Congo, Burundi, South Sudan, and Somalia).
Government policies can promote settlement growth. For example, Tanzania’s Villagisation (Ujamaa) policy in 1974 relocated people into planned villages, concentrating settlements. Decentralization of industries also boosted growth in cities like Mwanza, Musoma, and Mbeya. Land allocation and town planning policies similarly influence where settlements expand.
(c) Economic Factors People move to places with better economic opportunities. Job prospects, trading, and business activities drive rural-to-urban migration. Mining, fertile agricultural land, and major roads often trigger rapid settlement growth.
(d) Cultural Factors Some productive areas remain unsettled due to cultural or traditional beliefs. For instance, certain forests like Mumbanitu in Njombe are avoided for cultural reasons.
Social and Economic Problems Associated with Urban Growth
Rapid urban growth, especially in developing countries, brings several challenges:
- Overcrowding: Too many people live in limited space due to high immigration and natural population increase.
- Immorality: Rise in behaviours such as prostitution and decline in moral values.
- Water and Sanitation Problems: Inadequate sewage systems lead to pollution of rivers and lakes, causing diseases like typhoid, dysentery, and diarrhoea. Water scarcity is also common.
- Crime: Increased cases of robbery, drug trafficking, pickpocketing, and other crimes.
- Unemployment: More people compete for limited jobs.
- Traffic Congestion: Too many vehicles cause jams, noise, and air pollution (especially in Dar es Salaam).
- Inadequate Social Services: Shortages of water, healthcare, and other services.
- Street Children: Family breakdowns and lack of services push children onto the streets.
- Housing Problems: Severe shortage of decent houses.
- Development of Slums: Unplanned settlements and squatter areas grow due to poverty and high cost of living.
Ways of Solving Problems Related to Urban Growth
These problems need deliberate action. Here are practical solutions:
- Government Policies: Improve rural areas by providing better social services (water, electricity, schools, healthcare). This reduces rural-urban migration. Proper land redistribution and rural planning are also important.
- Good Urban Planning: Enforce strong planning policies to prevent slums and unplanned settlements. Housing designs should match the needs of the growing population.
- Family Planning: Promote family planning to control rapid population growth and make service provision easier.
- Development of the Informal Sector: Support small businesses with soft loans and training to create jobs outside big cities.
- Improvement of Rural Settlements: Rural electrification and other infrastructure projects can encourage people, especially youth, to stay in rural areas.
- Provision of Essential Services: Ensure reliable water, healthcare, education, and sanitation in both urban and rural areas.
- Creation of Employment Opportunities: Invest in industries and agriculture to create more jobs.
- Reliable Transport Systems: Expand public transport like Bus Rapid Transit (BRT) and city trains to reduce traffic congestion.
- Liberalization of Water Services: Allow private investment in water supply to improve access.
- Counselling Services: Religious and community organisations should provide guidance to youth on morality, drugs, and responsible behaviour.
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