The Human Impact Of The Lithosphere

The Human Impact Of The Lithosphere

Urbanization

Air Quality

• Urbanization (or urbanisation) is the physical growth of urban areas which result in rural migration and even suburban concentration into cities, particularly the very large ones.
• The United Nations projected that half of the world's population would live in urban areas at the end of 2008. By 2050 it is predicted that 64.1% and 85.9% of the developing and developed world respectively will be urbanized.

Mining

Deforestation

Air pollution comes from many different sources: stationary sources such as factories, power plants, and smelters and smaller sources such as dry cleaners and degreasing operations; mobile sources such as cars, buses, planes, trucks, and trains; and naturally occurring sources such as windblown dust, and volcanic eruptions, all contribute to air pollution. Air Quality can be affected in many ways by the pollution emitted from these sources.

• Mining is the extraction of valuable minerals or other geological materials from the earth from an ore body, lode, vein, seam, or reef, which forms the mineralized package of economic interest to the miner.
• Ores recovered by mining include metals, coal and oil shale, gemstones, limestone, and dimension stone.

• Deforestation is clearing Earth's forests on a massive scale, often resulting in damage to the quality of the land.
• Forests still cover about 30 percent of the world’s land area, but swaths the size of Panama are lost each and every year.
• The world’s rain forests could completely vanish in a hundred years at the current rate of deforestation.
• We could cut down more trees so that we could have oxygen nd still eliminate the deforestation levels.

Overgrazing

Agriculture

• Agriculture, also called farming or husbandry, is the cultivation of animals, plants, fungi, and other life forms for food, fiber, biofuel, drugs and other products used to sustain and enhance human life.
• Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that nurtured the development of civilization.

Overgrazing occurs when plants are exposed to intensive grazing for extended periods of time, or without sufficient recovery periods.

• It can be caused by either livestock in poorly managed agricultural applications, or by overpopulations of native or non-native wild animals.

Overgrazing reduces the usefulness, productivity, and biodiversity of the land and is one cause of desertification and erosion.

Resources

Land Use

• Land use is the human use of land. Land use involves the management and modification of natural environment or wilderness into built environment such as fields, pastures, and settlements. It also has been defined as "the arrangements, activities and inputs people undertake in a certain land cover type to produce, change or maintain it.

http://environment.nationalgeographic.com/environment/global-warming/deforestation-overview/

http://www.nationalgeographic.com/

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