All Notes for GEOG 2253


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Unformatted text preview: of oceans/polar ice melting) Coastal areas will be flooded Polar ice caps will melt Rise in extreme weather Stronger tropical storms Increase in heat waves Extinction of plants and animals World’s Largest Polluters— China passed the U.S. in 2006 for the country that emits the most carbon dioxide (due to auto emissions) China, U.S., Russia, India, Japan, Germany Biomes & Bioregions— Biome—term used to describe a grouping of flora & fauna into large ecological region Closely connected with climate regions Often referred to as ecosystem Bioregion—spatial unit or region of local plant and animals adapted to a specific environment Often referred to as an “ecoregion” Tropical forests—7% of the world Mostly in equatorial zone High average temperature Long days year round High amounts of rainfall Most diverse of all biomes Not suited for agriculture Found in Central and South America, Sub­Saharan Africa, S.E. Asia & Australia, Amazon Rainforest (largest) Deforestation in the tropics Amazon & S.E. Asia Causes of deforestation— Globalization of timber industry ½ of all tropic timber destined for Japan Clearing of forests for cattle Worldwide demand for beef Settlement areas for growing population Deserts— 1/3 of the Earth’s land is true desert less than 10 inch. Of rain per year Grasslands— Prairies U.S. & Canada Steppes— Central Asia, Russia, SW Asia Boundary between Desert & Grasslands fluctuates Desertification—spread of desert­like conditions into grasslands Causes— Overgrazing Poor cropping practices Salts in soil from irrigation Temperate Forests— Large tracts of forests found in the middle and high latitudes 2 major tree types— conifers & evergreen trees—pine, spruce deciduous trees—elm, maple threatened by commercial logging Forests cut down to make farmland Review biomes for test Food resources— Food production must double by 2025 to keep pace with expected human population growth rates Every minute: 258 people are born, and 1­ acres of existing cropland are lost to erosion, desertification and urban sprawl Problems & Projections— Agriculture may no be able to keep up with future population growth Food Security Issues— Local and reg...
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This note was uploaded on 02/07/2014 for the course GEOG 2253 taught by Professor Staff during the Spring '08 term at Oklahoma State.

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