Nature and Components of Resources | CUET PG Geography | Notes

Resources and Environment Interface

Introduction

• No organism is self-sufficient. From the smallest bacterium to the largest tree or whale, every organism lives within and depends upon an external environment. The environment consists of all the physical and biological factors surrounding an organism that influence its survival, growth, and activities. The relationship between organisms and their environment is mutual and interactive. The environment affects organisms, while organisms, in turn, modify and influence their environment.
• All the populations of plants and animals living and interacting within a particular area together form a community. The organisms within a community can broadly be classified into three functional groups: producers, consumers, and decomposers.
• Producers are mainly autotrophic organisms, particularly green plants, which are capable of producing their own food. Through photosynthesis, they capture solar energy and convert it into chemical energy, using inorganic substances such as carbon dioxide and water to form organic compounds. Producers therefore constitute the primary source of energy for most ecosystems.
• Consumers are organisms that cannot produce their own food and therefore depend directly or indirectly on other organisms for nourishment. They include animals such as herbivores, which feed primarily on plants, and carnivores, which feed on other animals. Consumers may therefore occupy different levels within a food chain.
• Decomposers, mainly bacteria and fungi, obtain nutrients by breaking down dead plants, animals, and other organic remains. During decomposition, complex organic matter is converted into simpler substances and ultimately into inorganic nutrients, which can again become available to producers. Decomposers therefore play an essential role in nutrient recycling and in maintaining the functioning of ecosystems.

Natural Resources

• Natural resources are the naturally occurring materials and processes of the Earth that sustain all forms of life, including human beings. They provide the goods and services necessary for the functioning of ecosystems, societies, and economies. Resources such as air, water, soil, minerals, forests, and biodiversity are essential for life, while many of them have no practical substitutes.
• Human beings depend on natural resources to meet their basic needs, necessities, and wants. Food, clothing, shelter, energy, transportation, and industrial production all ultimately depend on materials obtained from nature. In fact, almost every product that humans use or produce is derived, directly or indirectly, from one or more natural resources.
• Consequently, the continued existence and development of human societies are closely linked to the abundance, availability, accessibility, and quality of natural resources. The standard of living and lifestyle maintained by people also depend upon their ability to obtain and use these resources. Therefore, the sustainable management and conservation of natural resources are essential for maintaining ecological stability, economic activity, and human well-being.

Principle of Resources

• The very fundamental principle of resources is that resources, even renewable, are finite. For example, air and water are in abundance and are very much renewable but when they are polluted and degraded, they become unusable and non-renewable and become very difficult to restore the original quality of air and water if they have been degraded beyond a certain critical limit.

Uses of Resources and its Impact on Environment:

• The health and well-being of present and future generations are inseparably linked with the quality of air, water, soil, and biological resources. These natural resources are not only essential for human survival and economic development but are also closely associated with culture, traditions, art, and literature. Natural resources possess intrinsic value, meaning that they are valuable in themselves, irrespective of their economic or commercial usefulness.
• Natural resources form the fundamental base of economic growth and human development. However, the extraction of resources from nature, their methods of utilisation, and the disposal of wastes generated after their use can have serious adverse effects on the environment. It is therefore essential to understand the relationship between resource use and environmental degradation. Such understanding helps in developing appropriate strategies for the management and conservation of resources, the treatment and disposal of waste materials, and the prevention or remediation of environmental pollution and degradation.

Minerals:

• Two major concerns regarding natural resources are particularly important for present and future generations. The first concerns the availability and depletion of mineral resources.
• A large proportion of the raw materials used by industries, particularly metals and other minerals, were formed and accumulated through extremely slow geological processes over millions of years. However, modern societies are consuming these resources at a very rapid rate. Since their natural formation is extremely slow compared with the rate of human consumption, excessive exploitation may lead to a decline in the availability of important minerals and, in some cases, their eventual depletion.
• This raises the important question of the adequacy or inadequacy of mineral resources for present and future generations. The long period required for their natural formation makes mineral conservation and efficient utilisation particularly important.
• Mineral extraction also has significant environmental consequences. Mining creates pits, excavations, scars, and other physical alterations on the Earth’s surface. These disturbances may contribute to land degradation, surface collapse, and subsidence. Mining activities can also disturb natural drainage systems, vegetation, soils, and ecosystems.
• After minerals, particularly metals, are used in industrial processes and consumer products, they may eventually become waste materials. If such wastes are improperly disposed of into soil and water, they can cause serious pollution. In some cases, toxic substances released from industrial and mineral wastes may become hazardous to human health, other organisms, and the biosphere.

Fossil Fuels:

• The second major category of industrial resources consists of fossil fuels, particularly petroleum, natural gas, and coal. These resources are also finite and non-renewable because they were formed through geological processes over very long periods of time.
• Modern societies consume fossil fuels at a very high rate. Because their rate of formation is extremely slow compared with their rate of consumption, continued intensive exploitation may eventually result in the depletion of economically accessible reserves.
• Fossil fuels provide a major proportion of the energy required by the industrial, transport, and domestic sectors. However, their extraction and especially their combustion produce substantial environmental impacts.
• The burning of coal, petroleum, and natural gas releases various gases and particulate pollutants into the atmosphere. These emissions alter the natural composition of the atmosphere and can influence atmospheric processes and the Earth’s energy balance.

Carbon Dioxide:

• The combustion of fossil fuels releases large quantities of carbon dioxide (CO₂) into the atmosphere. Industrial chimneys, vehicles, power plants, and other human sources have therefore become major contributors to atmospheric carbon emissions.
• The increase in atmospheric CO₂ strengthens the greenhouse effect, because carbon dioxide absorbs and re-emits outgoing terrestrial infrared radiation. The enhanced greenhouse effect contributes to global warming and climate change, producing changes in temperature and other components of the Earth’s climate system.
• Thus, the use of fossil fuels illustrates the close relationship between resource utilisation and environmental change: a resource extracted to meet human energy requirements can, through its combustion, alter atmospheric composition and influence the global climate system.

Nitrogen Oxides:

• The combustion of petroleum and other fossil fuels in motor vehicles, trucks, railway engines, aircraft, and other combustion systems releases nitrogen oxides (NOₓ) into the atmosphere.
• Nitrogen oxides participate in atmospheric chemical reactions and contribute to several forms of air pollution. Some nitrogen oxides also participate in chemical processes that can affect atmospheric ozone, although the relationship between emissions and ozone varies between the stratosphere and troposphere.
• Stratospheric ozone is particularly important because it absorbs a substantial proportion of harmful ultraviolet (UV) radiation from the Sun. Significant depletion of stratospheric ozone allows more biologically harmful UV radiation to reach the Earth’s surface, posing risks to humans, plants, animals, and aquatic organisms.

Sulphur Dioxide:

• The combustion of fossil fuels containing sulphur releases sulphur dioxide (SO₂) into the atmosphere. Coal and certain petroleum products can be important sources of sulphur dioxide emissions.
• Sulphur dioxide can undergo atmospheric chemical reactions and contribute to the formation of sulphuric acid and other acidic compounds. These substances may return to the Earth’s surface through precipitation, producing acid deposition or acid rain.
• Acid rain can adversely affect soils, freshwater ecosystems, forests, vegetation, buildings, and monuments. It may also alter the chemical composition of water bodies and damage organisms that are sensitive to changes in acidity.

Resource–Environment Link:

• The examples of minerals and fossil fuels demonstrate that natural resources and the environment are closely interconnected. Resource extraction can alter landforms and ecosystems, while resource processing and consumption can generate air, water, and soil pollution.
• Therefore, resource management cannot be separated from environmental management. Sustainable development requires the efficient use of resources, conservation of finite resources, reduction of waste, proper treatment and disposal of pollutants, adoption of cleaner technologies, and development of alternatives wherever possible.
• The central issue is therefore not merely the availability of resources but also the environmental consequences of extracting, using, and disposing of them. Proper resource management is essential to ensure that present generations can meet their needs without compromising the ability of future generations to meet theirs.