Progress towards poverty reduction

Poverty reduction refers to a fall in the number or proportion of people who cannot meet their basic material needs. It can be measured at a global scale, but worldwide progress often masks major differences between regions and within them.

Economic growth and employment can increase household incomes, as can improved education and access to services. Change does not happen at the same pace everywhere. Regions differ in how they participate in global trade, investment and development, while conflict, weak infrastructure, rapid population growth and unequal access to opportunities may hold back poverty reduction.

Regional and continental averages can hide inequality too. A country might experience rapid economic growth while some rural areas, informal urban settlements or social groups remain poor. Poverty reduction therefore needs to be studied at more than one scale.

The new global middle class

The new global middle class includes people whose incomes have moved above poverty levels, giving them more disposable income to spend on goods and services beyond basic necessities. This group has grown especially strongly in emerging and middle-income economies.

As incomes rise, both the quantity and type of resources consumed change. Households may buy more processed food and meat, electrical appliances, private transport or larger homes. Such choices raise demand for water, agricultural land and energy. The exact pattern, though, depends on prices, culture, infrastructure and government policy.

The expansion of this group connects development with resource consumption. Poverty reduction can improve health and quality of life, yet it may also add to ecological pressure when higher consumption is multiplied across a large population.

Scale and uneven change

The relationship is more complicated than richer countries always having the fastest growth in consumption. High-income societies often start with very high consumption per person, whereas middle-income societies may show the fastest rate of increase. Low-income populations generally use fewer commercial resources, but they may depend heavily on local land, water and biomass.

Key terms: poverty reduction, regional variation, continental pattern, new global middle class, disposable income, resource consumption.

Ecological footprint

An ecological footprint estimates how much biologically productive land and water is required to provide the resources consumed by a population and absorb the waste linked to that consumption. Different forms of resource demand are converted into a shared measure, usually expressed in global hectares.

This measure covers demand from food production, forest products, built-up land and energy use. As a result, consumption patterns involving different combinations of resources can be compared.

Different scales of measurement

National totals and national footprints per person measure different things. A country with a large population may have a high total footprint even when consumption per person is moderate. In contrast, a smaller, wealthier country may have a lower total footprint but a far higher footprint per person.

Hypothetical footprint trends distinguish national totals from per-person consumption.

Measuring trends

A time series shows whether an ecological footprint is rising, falling or staying stable. The pattern may change because of population growth, rising incomes, changing diets, urbanization, transport choices, energy sources or improvements in efficiency.

Valid comparisons must use the same scale and measure. Total footprints help assess overall demand, while per-person footprints are better for comparing average consumption. Even so, national averages hide differences between income groups and between places within a country.

Ecological footprints are estimates, not direct counts of every resource used. By reducing complex consumption to a single indicator, they make comparisons easier. However, this simplification can hide the particular causes of pressure. Ecological footprints are most useful when considered alongside evidence about water, food and energy consumption.

Key terms: ecological footprint, global hectare, individual footprint, national footprint, global footprint, total consumption, per-capita consumption, trend.

Water availability and consumption

Water availability varies from place to place because of differences in climate, river systems, groundwater reserves and seasonal rainfall. Consumption is uneven too, shaped by population, income, agriculture, industry, infrastructure and household access.

Agriculture uses a large share of freshwater since both crops and livestock need water. Industry adds to demand, as does growing household use—especially in places where incomes and urbanization are rising. Water pressure can result from naturally limited supplies, high consumption, or a combination of the two.

Embedded water is the water used to produce a food item or manufactured good. Through trade, the water used during production is indirectly transferred from the exporting place to the importing place.

As a result, local consumption may rely on water resources far away. Imports can reduce direct pressure on a country’s own supply, while export production may increase demand in the source region.

Land and food

The amount of productive land available depends on land quantity and quality, climate, water supply and management. Food consumption also differs between places because incomes, prices, cultural preferences and market access vary.

As disposable incomes rise in many middle-income countries, diets often change. People may eat more meat, dairy products, processed foods and vegetable oils. Compared with diets based more heavily on directly consumed staple crops, these shifts can require more land, animal feed, water and energy.

Trade separates where food is produced from where it is consumed. Some places generate surpluses for export; others rely heavily on food imports. The land demand created by consumers may therefore be felt in another country.

Energy

Energy consumption generally rises with industrialization, urbanization, transport use and household access to electrical goods. Yet energy sources and consumption per person differ widely among countries.

The energy mix is the combination of energy sources used by a place. A shift in the energy mix doesn’t necessarily mean total energy consumption is falling. Renewable and nuclear generation may grow while hydrocarbon use stays high because overall demand is rising too.

One connected overview

Water, food and energy don’t operate as separate patterns. Growing food and producing energy require water, while pumping, treating and transporting water require energy. Agricultural production depends on both. A change in one resource system can therefore affect demand for the others.

Key terms: water availability, water consumption, embedded water, productive land, changing diets, middle-income countries, hydrocarbons, nuclear power, renewables, modern energy, energy mix.

Interrelated trends

Development connects patterns of resource use. As poverty falls and the new global middle class grows, purchasing power rises. People may change their diets, travel more, use more energy at home or buy more manufactured goods. These shifts then affect demand for water, land and energy.

The effects build up over time. Population growth can raise total demand, and higher consumption per person adds more pressure. Technology and greater efficiency may reduce the resources needed for each unit of production, though, so these trends don’t move at the same rate everywhere.

Spatial interactions

Spatial interactions are movements and connections between places. In resource systems, these include flows of raw materials, food, energy, manufactured goods and finance, as well as the resource demands embedded in traded products.

Consumers may live a long way from the resources that support their consumption. A manufactured product, for instance, may use energy and water in one country, rely on raw materials from another and then be purchased in a third. Its ecological footprint therefore connects all these places, not just the final market.

Important interactions include:

• food trade, which shifts demand for agricultural land and embedded water;
• transfers of oil, gas, coal or electricity between producing and consuming regions;
• trade in manufactured goods containing indirectly used water, energy and raw materials;
• flows of investment and technology that change where and how resources are extracted or produced.

Evaluating global patterns

Consumption and resource use don’t always happen in the same place. A country may seem to conserve its own land or water because it imports resource-intensive goods. By contrast, an exporting country may face high local resource demand while supplying consumers elsewhere.

These patterns also work at several scales. Total consumption may rise globally, while middle-income economies may experience the fastest regional growth. National averages can hide major social differences. At the local scale, production may concentrate environmental pressure in particular farming, mining or industrial areas.

Ecological footprints link consumption with wider resource demand, but they need to be considered alongside trade and the location of production. Together, this information gives a clearer account of how development processes in one place affect resource availability and consumption elsewhere.

Key terms: interrelationship, spatial interaction, resource flow, embedded water, international trade, ecological footprint, consumption, production, resource availability.