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Geography - Resource Management (Renewable and non-renewable sources and…
Geography - Resource Management
Overview of the global and UK distribution of food, energy and water
Different types of natural resources
Biotic - These resources are obtained from the biosphere and are capable of reproduction.(living things) Examples animals, brids and fungi.
Abiotic - These resources are obtained from the lithosphere, atomsphere and hydrosphre. (Non-living things). Examples minerals, soil and sunlight.
Renewable - These are resources that are potentially inexhaustible and can natural be replenished in a much shorter time, than other sources of energy. Examples wind, solar and HEP.
Non Renewable - These are resources that cannot be remade, as it takes millions of years for them to form. Examples coal, oil and natural gas.
Ways people exploit environments to obtain food, water and energy.
Over Fishing
More fish are being caught than being born through natural reproduction and so fish stocks are declining.
Cod in the North sea has declined from 300,000 tonnes in the 1970's to 20,000 tonnes in 2006.
Through advances in fishing technology - large boats and larger nets etc, fishing is now unsustainable.
'Tragedy Of Commons'
All countries are trying to fish the North Sea but no one owns it so everyone goes there but it's not managed .
Oil
Oil spills are very dangerous
Trees have to be cut down.
Oil extraction causes environmental impacts for example animals habitats could be damaged.
This can kill animals
leads to lower life expectancy
Gas flaring means acid rain.
Rainforest
Cut down to provide space for Palm Oil to grow.
Palm Oil is a valuable resource that has become even more valuable as the demand for increases.
It's in chocolate bars, ice cream and pizza.
A natural resource is any feature or part of the environment that can be used to meet human needs.
Distribution and Consumption of Natural Resources on a global and national scale
UK
Forestry
The country now has a forestry industry which employs approx 800,000 people.
Makes up approx 2.5 per cent of British Economy.
Rocks and Minerals
UK minerals are used to build houses and roads.
In 2013 195 million tonnes of minerals was extracted.
Soil and Agriculture
UK has very fertile soil
Some farmers have also started to grow vines and British wines.
Fossil Fuels
Coal, Oil and Gas
coal reserves in the UK were vast but most were long was below ground.
Oil and gas have more recently been discovered under the north sea.
Water Supply
Global
Describe the distribution of global forest resources
Around the equator due to the high rainfall, low pressure due to the hadley cell and high temperatures.
Renewable and non-renewable sources and environmental impact
Hydroelectric power
Positive impacts on people - People from Brazil and Paraguay rel on less non renewable resources due to the Itaipu plant in Brazil and Paraguay.
Negative impacts on people - Families have to relocate due to construction of the Itaipu plant. The three gorges dam in China has flooded lots of villages nearby, causing people to evacuate.
The Itaipu plant reduces carbon emissions as it can supply electricity to the companies that need it.
Negative impacts on the environment - In Paraguay the construction of the Itaipu dam has destroyed a large area of forest, and therefore a large area of habitat.
Wind power
Example - the London Array in Kent
Positive impacts on people - it will be able to generate enough energy to power 470,000 homes
Negative impacts on people - Turbines can be noisy, older turbines produce 40-50 decibels.
Positive impacts on environment - London Array could save 925,000 tonnes of carbon dioxide a year. Damages the environment a lot less than other sources e.g. oil
Negative impact on environment - The construction of blades and pillars produces carbon dioxide. Turbines kill 4 birds a year on average.
Solar Power
Example - The Ivanpak farm, California
Positive impact on people - It is a growing industry, creating many well paid jobs around the world.
Positive impacts on environment - They are built out of the way in deserts due to the clear skies, so there is less pollution.
Negative impact on people - They take up lots of land that could be used for growing crops or rearing animals.
Negative impacts on environment - photo voltaic cells are made of toxic materials like mercury, lead and cadmium that damage the environment. Construction can harm the fragile desert habitats.
Coal
Example - Kellingley colliery
Positive effects on people - It is easy and cheap to mine. It is an efficient resource for producing large amounts of energy.
Positive effect on environment - There are still large amounts of coal around the world so supplies should last for a further 200 years.
negative effects on people - It is dangerous to mine and has caused many deaths.
Negative effects on environment - Open cast mining of coal can cause damage to surrounding wildlife an environment. Burning coal releases harmful greenhouse gases into the atmosphere.
Oil
Example - Athobasca tar sands, Canada
Positive impacts on people.
will's mind map
