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Human Influence on Environment

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by

Kevin Johnson

on 13 October 2016

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Transcript of Human Influence on Environment

Human Influence on Environment
Destruction of the Environment
Modifications to the Environment
Influence of Technology
The Four De's
The destruction and loss of forests--main areas in Brazil, Nepal, Malaysia, and Indonesia
Oil Spills
Exxon Valdez-1989
-Oil Spill off the coast of Alaska
Smog
Dense air pollution (from cars and factories) that lingers
-Mexico City, Mexico
-Los Angeles, California
-Beijing, China
Desertification
Spread of arid-like conditions
- Main region-the Sahel of Africa, Asia
-Caused from cutting down trees in Tropical Wet/Dry climates
Disasters
Depletion of Resources
Overuse of resources leads to shortage, eventually running out
-Renewable resources--can be replenished in our lifetime
-Non-renewable--cannot be replenished
Deterioration Due to Acid Rain
Acid Rain--when chemical pollution mixes with rain and causes the water to be more acidic
--Mainly in Eastern Europe, Northeast US, Scandinavia, China, and Southern Canada
Deforestation
Chernobyl, Ukraine 1986
-Nuclear meltdown in Ukraine, then Soviet Union
-caused massive radiation over Europe
-entire town was abandoned--feature in COD: MW
Mr. Fetch
Failed super-human project gone horribly wrong.
Canals
Human-made waterways that connect bodies of water, used for transportation
Suez Canal
Dams
Blocking rivers to generate electricity
Agriculture
-New innovations in fertilizer and genetically modified crops
-More sophisticated machinery to better plant, water, and grow crops
Water Diversion
When humans change the flow of rivers or create bodies of water
Irrigation
Artificially supplying water to make land arable
Aral Sea
Shrinking due to over irrigation of tributaries
-Soviet Union over-irrigated to grow cotton
-Between Uzbekistan and Kazakhstan
Hoover Dam
Built in 1930s, considered a modern world wonder
Blocks the flow of the Colorado river
Aswan High Dam
-Stops seasonal flooding of the Nile River
-provides hydroelectric power and irrigation
-blocks sediments from fertilizing alluvial soils of the Nile
-diminishing capacity as sediments build up in front of dam
-Connects Mediterranean and Red Seas
-In Egypt
-Allows for quick passage to India and East Asia, bypassing Africa
Panama Canal
-Built to connect the Atlantic and Pacific Oceans
-Owned by Panama
-has locks to elevate or lower ships
Polders
-Land reclaimed from the sea
-Primarily in the Netherlands
Terracing
-Stair-step farming pattern
-Notably in East Asia for rice
-along hill and mountain sides
Airplanes
Airports expand into nearby lands that were previously unused or buffer zones
They cause air pollution and noise pollution, both affect animal and plant life
Environmental Impact on Humans
Automobiles
Automobile technology has created a need for parking lots
It also has caused the creation of suburbs
Energy Usage
-The use of fossil fuels has hurt our environment
-Mining and exploration also has hurt the environment
-Nuclear power, while clean and efficient, comes at great risk
Transportation
-The environment has been altered by building of highways, roads, and railroads
Transportation Patterns
People avoided troublesome terrain when trading or transporting goods
Settlement Patterns
Humans build near and along rivers and coasts
Housing Materials
Humans use the materials they have available to them
Agricultural Activity
Based on climate and land features, humans grow different types of crops and livestock
Types of Recreation
Recreation is based on climate and land factors
Full transcript