Population growth

POPULATION GROWTH ???

IMPACTS OF POPULATION GROWTH

• Impacts of population growth on physical environment.

• Physical environment means – non living environment or the land, air, water, soil and minerals.

• Impacts of population growth on biological environment.

• Biological environment comprises of human, biological systems, flora and fauna, living creatures from moth to midgets.

Impacts on physical environment

Most critical resources for human life.Population Growth Utilization + Overuse + Misuse of physical resources

Includes impacts on fresh water, owen valleys, waste management, allocation of resources, changing of consumption pattern, rising demand for energy etc

Impacts on biological environment

• The biological components are bound to suffer the consequences.

• Natural processes have been altered seriously that have caused serious imbalances in ecosystems.

• Includes impacts on destruction of habitats, water crisis, Generalization of waste, endangerment to species, health condition etc

Population and Sustainable Development

• 5 to 7 million hectares of agricultural lands are lost to accelerating land degradation and rapid urbanization.

• 2 billion hectares is degraded as a result of overgrazing and poor farming practices.

• Another 16 to 20 million hectares of tropical forests and woodlands are lost each year.

• Water scarcity defined as less than 1,000 cubic metres per person per year.

• climate experts worry that continued increases in atmospheric concentrations of CO2 – already 28 per cent higher than pre-industrial levels .

Population and Sustainable Development

• Develop technologies to minimize damage to natural systems & make it widely available to developing countries as well.

• Sustainability in all areas of economic activity, including agriculture, industry, forestry, fisheries, transportation and tourism.

• Successful efforts to alleviate poverty.• Education, basic health care – including family

planning and reproductive health care.

Pollution

Pollution is the introduction by man into the environment of contaminants that

contains harmful substances

Air pollution

• Air pollution is the modification of the natural characteristics of the atmosphere by a chemical, particulate matter, or biological agent. The atmosphere is the complex , dynamic natural gaseous system that is essential to support life on planet earth. Stratosphere ozone depletion due to air pollution has long been recognized as a threat to human health as well as to the earths ecosystem.

Water pollution

• Water pollution is the large set of adverse effect upon water bodies such as lakes, rivers, oceans, and groundwater caused by human activities.

Noise pollution

• Noise pollution is displeasing human or machine created sound that disrupts the activity or happiness of human or animal life.

• A common form of noise pollution is from transportation, especially from motor vehicles.

Causes and effects of noise pollution

• No one on earth can escape the sounds of noise- an unwanted, disturbing sound that causes in the eye of beholder.

• Noise is the disturbance to the human environment that is escalating at such a high rate that it will become major threat to the quality of human lives.

Soil Pollution

• Soil pollution is defined as the build-up in soils of persistent toxic compounds, chemicals, salts, radioactive materials, or disease causing agents, which have adverse effects on plant growth and animal health.