How does increased human population impact consumption and agriculture


More humans consume more freshwater, more land, more clothing, etc. The more people on the planet, the more food you need to feed those humans (more fishing, more farming, more deforestation to make room for agriculture and raising livestock, and so forth).

Overpopulation resulted in land resource scarcity, fragmentation of farm plots, and ecological degradation such as increasing emissions, soil erosion, deforestation, and the overuse of natural resources. Producing adequate food for a rapidly growing population is a prime challenge for development.


How does human population growth influence resource consumption?

This is mainly due to the fact that as countries become more affluent they start to use more energy, have more material objects, and create more pollution. Now, let’s review human population growth and how it is influencing resource consumption. The human population has been steadily increasing and reached over seven billion people in 2011.

How does population growth affect food production?

The effect of population growth on efficiency in food production The global population has been expanding rapidly for many years, standing at around 7.3 billion in 2016. This brings with it a number of challenges around global sustainability, including the need for more food. Aug 23, 2016

How does human population increase affect the environment?

While human population increases, food production should be increased therefore we want more agricultural land, cut down trees, alter rivers, etc. For agricultural land demand, people tend to clear forests. Therefore, natural ecosystems lost.

What is the impact of Agriculture on the environment?

In an agricultural or technological society, each human individual has a negative impact on his environment. He is responsible for some of the simplification (and resulting destabilization) of ecological systems which results from the practice of agriculture (3). He also participates in the utilization of renewable and nonrenewable resources.


How does increased population affect agriculture?

Higher rural population density is associated with smaller farm sizes. Higher rural population density is also associated with greater demand for inorganic fertilizer. Maize and teff yields do not rise with population density. Farm income per hectare decreases as rural population density rises.

How does population growth affect agriculture and food?

In addition, rapid population growth can lead to inappropriate farming practices that impoverish and erode the soil; reduce vegetation; over-use and improperly use agrochemicals; and frustrate water resource management. The result of such practices is severe land degradation.

How does the increase in human population affect our resources and the environment?

Human population growth impacts the Earth system in a variety of ways, including: Increasing the extraction of resources from the environment. These resources include fossil fuels (oil, gas, and coal), minerals, trees, water, and wildlife, especially in the oceans.

What is the relationship between population growth and agriculture?

Population movements increase urban populations and reduce rural populations. This reduces labor productivity in agricultural areas and causes these areas to remain inactive, and increases the pressure of urban development on these areas.

How would overpopulation affect food and other resources?

“As overpopulation takes hold, producers find themselves under pressure to meet amplified demand for food, thus placing vast constraints on production and distribution channels. For example, as crop yields grow in size, producers cut corners and attempt to inflate their production line.

What are effects of overpopulation?

The Effects of Overpopulation More people means an increased demand for food, water, housing, energy, healthcare, transportation, and more. And all that consumption contributes to ecological degradation, increased conflicts, and a higher risk of large-scale disasters like pandemics.

How does the growing global population and increasing consumption affect biodiversity?

Population growth and increasing resource consumption affect biodiversity in two ways: they create pressure to convert wildlife habitat into agricultural and urban land, and they produce wastes that pollute habitat and poison wildlife.

How does population growth affect the economy?

Some theoretical analyses argue that high population growth creates pressures on limited natural resources, reduces private and public capital formation, and diverts additions to capital resources to maintaining rather than increasing the stock of capital per worker.

Will population growth affect agriculture sector negatively?

The results showed that the population growth had a positive and significant impact on the conversion of agricultural land. However, the population growth has no significant effect on the sustainability of subak, while the conversion of agricultural land has a negative and significant impact on subak sustainability.

How does population density influence agricultural intensification and productivity?

It is also possible that population density itself is a driver of demand for inputs, and staple crop productivity. Population density can directly affect agricultural intensification through improved information flows, encouragement of the development and advancement of institutions and reduction of transaction costs.

Why is the population of the world growing?

The graph shows that the human population is growing. This is because the birth rate is much greater than the death rate. In the last fifty years, the population of humans on the planet has increased from 3 billion to 7 billion. This increase is more rapid than at any other point in the history of our species.

How can crop yields be increased?

The yield of crop plants per unit area of farmed land can be increased by intensive farming methods, such as the application of chemical fertiliser and the widespread use of pesticides. These methods have the advantage of increasing the quantity of food that can be produced, but can also have an adverse effect on the environment.

How do farmers meet the demand for food?

A growing human population demands increased food production. Farmers try to meet that demand by intensive farming, using fertilisers and pesticides that are impacting on the environment.

Why are human populations kept low?

Population numbers were kept low because of the difficulty of finding food.

How many people will be in the world by 2050?

The human population is predicted to reach around 10 billion by 2050. As the number of people increases, the yield of food from farming will also need to increase or malnutrition and starvation will occur.

How does population growth affect the environment?

Population growth causes a disproportionate negative impact on the environment. Problems of population size and growth, resource utilization and depletion, and environmental deterioration must be considered jointly and on a global basis. In this context, population control is obviously not a panacea—it is necessary but not alone sufficient …

How does population size affect per capita?

Population size influences per capita impact in ways other than diminishing returns. As one example, consider the oversimplified but instructive situation in which each person in the population has links with every other person—roads, telephone lines, and so forth. These links involve energy and materials in their construction and use. Since the number of links increases much more rapidly than the number of people (6), so does the per capita consumption associated with the links.

How does diminishing returns affect the environment?

As one example of diminishing returns, consider the problem of providing nonrenewable resources such as minerals and fossil fuels to a growing population, even at fixed levels of per capita consumption, As the richest supplies of these resources and those nearest to centers of use are consumed, we are obliged to use lower-grade ores, drill deeper, and extend our supply networks. All these activities increase our per capita use of energy and our per capita impact on the environment. In the case of partly renewable resources such as water (which is effectively nonrenewable when groundwater supplies are mined at rates far exceeding natural recharge), per capita costs and environmental impact escalate dramatically when the human population demands more than is locally available. Here the loss of free-flowing rivers and other economic, esthetic, and ecological costs of massive water-movement projects represent increased per capita diseconomies directly stimulated by population growth.

What were the environmental problems of the 1940s?

In contending that a change in the way we use technology will invalidate these arguments, Commoner (2, 8) claims that our important environmental problems began in the 1940’s with the introduction and rapid spread of certain “synthetic” technologies: pesticides and herbicides, inorganic fertilizers, plastics, nuclear energy, and high-compression gasoline engines. In so arguing, he appears to make two unfounded assumptions. The first is that man’s pre-1940 environmental impact was innocuous and, without changes for the worse in technology, would have remained innocuous even at a much larger population size. The second assumption is that the advent of the new technologies was independent of the attempt to meet human needs and desires in a growing population. Actually, man’s record as a simplifier of ecosystems and plunderer of resources can be traced from his probable role in the extinction of many Pleistocene mammals (29), through the destruction of the soils of Mesopotamia by salination and erosion, to the deforestation of Europe in the Middle Ages and the American dustbowls of the 1930’s, to cite only some highlights. Man’s contemporary arsenal of synthetic technological bludgeons indisputably magnifies the potential for disaster, but these were evolved in some measure to cope with population pressures, not independently of them. Moreover, it is worth noting that, of the four environmental threats viewed by the prestigious Williamstown study (15) as globally significant, three are associated with pre-1940 technologies which have simply increased in scale [heavy metals, oil in the seas, and carbon dioxide and particulates in the atmosphere, the latter probably due in considerable part to agriculture (30)]. Surely, then, we can anticipate that supplying food, fiber, and metals for a population even larger than today’s will have a profound (and destabilizing) effect on the global ecosystem under any set of technological assumptions.

What would happen if population growth was halted?

In relation to theorem 2 we must emphasize that, even if population growth were halted, the present population of the world could easily destroy civilization as we know it. There is a wide choice of weapons—from unstable plant monocultures and agricultural hazes to DDT, mercury, and thermonuclear bombs. If population size were reduced and per capita consumption remained the same (or increased), we would still quickly run out of vital, high-grade resources or generate conflicts over diminishing supplies. Racism, economic exploitation, and war will not be eliminated by population control (of course, they are unlikely to be eliminated without it).

How can we help the population decline?

Perhaps a good strategy to contribute to population decline is to provide better opportunities for study for women (especially in underdeveloped countries) which has proven to be very effective in that regard, since it makes them marry later and think more in the satisfactions that their career gives them than in having children. It is also convenient to support campaigns that encourage the use of all types of contraceptives and seek to decriminalize abortion. Most people understand little about population growth and environmental impact figures, but do understand and support those policies that improve their quality of life and allow them to freely make decisions regarding having or not having children.

What are the environmental problems that are independent of the way in which population is distributed?

These include the global problems of weather modification by carbon dioxide and particulate pollution, and the threats to the biosphere posed by man’s massive inputs of pesticides, heavy metals, and oil (15). Similarly, the problems of resource depletion and ecosystem simplification by agriculture depend on how many people there are and their patterns of consumption, but not in any major way on how they are distributed.

When did the human population start to grow?

After the invention of agriculture, the human population began to grow slowly until the 1900s, when a rapid increase in the human population began.

Why are natural resources being used up?

Due to the increase in the human population, natural resources are being used up at a more rapid rate than in the past. Although renewable natural resources can be replenished, when they are used too rapidly they cannot replenish fast enough to meet the human demand.

How can we reduce our ecological footprint?

In order to reduce our pressure on the Earth’s resources, we each need to reduce our overall ecological footprint by using renewable sources, recycling materials, and limiting our reliance on nonrenewable natural resources.

Why do countries have a larger ecological footprint?

This is mainly due to the fact that as countries become more affluent they start to use more energy, have more material objects, and create more pollution.

How many people were in the world in 2011?

The human population has been steadily increasing and reached over seven billion people in 2011. All humans require resources for survival, and this rapid population growth is putting a great deal of stress on natural resources, which are substances and energy sources that we take from the environment and use.

How many people are born in the world every second?

The human population is constantly growing. Worldwide every second, 2.6 people are being born. To put that into perspective, if it takes you five minutes to watch this lesson, during that time period, over 700 people will be born! Due to this rapid birth rate, as of 2011, the human population exceeded seven billion people! The human population has not always been so large.

What are the factors that affect food production?

The Population Institute estimates that a 70 per cent increase in food production will also have to take into account increases in energy prices, as well as factors such as the groundwater depletion, the loss of farmland to urbanization, and potential flooding and droughts caused by climate change.

Why have ideas and new technology moved faster than population growth for centuries?

Ideas and new technology have moved faster than population growth for centuries, helping to ensure people and business around the globe can keep up to speed with an ever-changing world.

What does it mean to keep up with changes in food supply?

This will mean ensuring food requirements are met, and that investment in future supply is adequate.

What will the CGIAR effect require?

According to the CGIAR, this effect will require the development and use of technologies and production systems that increase input-use efficiency in agriculture.

Why is the FAO important?

The FAO believes there is potential to increase crop yields, with technology playing a major role in helping to boost production efficiency. The organization believes that having social and economic incentives in place will create more certainty over actual yield volumes and what is capable of being produced.

How much cereal will be produced in 2050?

Annual production of cereal will need to grow by almost one billion tons, and meat production by over 200 million tons, to a total of 470 million tons in 2050. 72 per cent of this will take place in developing countries, up from 58 per cent today. Additional factors.

How many people were in the world in 2016?

The global population has been expanding rapidly for many years, standing at around 7.3 billion in 2016. This brings with it a number of challenges around global sustainability, including the need for more food.

How many people does the average farmer feed?

Shaw says meeting the demands of a growing population is nothing new to agriculture. Today the American farmer feeds an average of 144 people, almost an eight-fold increase from 1940. Most of the increase has come from higher yields. Per-acre production of corn, for example, has doubled since 1970.

How many people will live on an acre of land in 2050?

He estimates that by 2050 an acre of land will need to support between 2.4 and 2.6 people. It’s a trend that’s been accelerating for more than 50 years. “From 1950 through 2000, the world population doubled,” Percy said. By 2050, the world will include 9 billion people. Socio-economic changes, including increased buying power, …

What will be the population of the world in 2050?

Farm Progress Show. By the year 2050, global population will reach 9 billion, a figure that poses significant challenges to the agricultural producers who will be charged with providing adequate food and fiber to nourish and clothe that many people. To meet production goals, farmers, ranchers and the industries that support them with seed, …

How can we reduce the negative impact of food production?

Buying ethically-sourced meat and reducing overall meat consumption seems to be the way to reduce the negative impact of food production on the environment and our health. However, a more systemic approach would include global population size as another variable which humanity has some control over. The quantity of food produced and how it’s produced and consumed, is relevant to sustainability, but so too is the number of consumers. In the past 100 years total carbon emissions (a good indication of consumption) has increased about 15 times. This is due, not only to the increase in emissions per head (nearly a 4-fold increase) but also due to the number of consumers or population growth (again, nearly a 4-fold increase). It seems that population growth is as much to blame for our overall consumption as is our lifestyle.

What are the factors that affect food security?

The ratio of food demand over production is the main factor affecting the level of food security, but other factors include fair food distribution , as well as energy and materials efficiency which has an influence on all variables. Apart from food, the other common variables in this diagram are people and animals.

What is the role of an Outreach Officer for Population Matters?

As Organisational Outreach Officer for Population Matters, my task is to contact ethically-oriented organisations (from faith organisations to environmental NGOs) and suggest ways in which the issue of population growth could be covered on their website and integrated into their ethos. Many organisations I approach agree that population size contributes to climate change, conflict and malnutrition, but they frequently respond by saying that the issue lies outside of their remit. Population Matters’ patron Jonathon Porritt talks about the reasons why organisations avoid referencing population growth in this 14-minute video, debunking a few myths along the way.

What is an influence diagram?

A simplified influence diagram can be derived from their Executive summary: This diagram shows that lifestyle and living standards (how humans live and the means by which they live) affect the total amount of demand and consumption.

What is the global food system?

The issue under investigation here is the global food system, the purpose of which is to feed humans (and to a certain extent livestock) over a sustained period of time. It is embedded in and dependent on ‘macro’ systems as shown in the diagram below. The food system is one of many systems tasked with fulfilling human biological needs.

How many people will be fed by 2050?

Having to feed 9.8 billion humans by 2050 or 11.2 billion by 2100 (for graphs see UN World population prospects 2017) should not be considered a fact of life but rather a consequence of humanity’s unconsidered reproductive impulses – behaviour that could be changed in a rational, non-coercive and cost-effective manner.

What is the degree of dependency, overlapping and complexity of these human systems?

The degree of dependency, overlapping and complexity of these human systems results in a diversity of values and perspectives in terms of improving food supply and demand. In other words, the more complex the social situation, the greater the number of stakeholders and interpretations.

Why are natural ecosystems lost?

For agricultural land demand, people tend to clear forests. Therefore, natural ecosystems lost. For palm oil, for instance, people convert natural ecosystems into palm tree plantations in Far Eastern Countries. Natural ecosystems have been diminishing in size and their functions. Often, this is irreversible.

Is DDT harmful to agriculture?

We use lots of chemicals and agricultural aids. Even though these products help us improve our agricultural harvest, they might be harmful to water resources or natural air/soil quality. Their harm can be shown many years later (such as in the case of DDT). Therefore, natural life is harmed/damaged when we use such chemicals to improve our efficiency in agriculture.


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