Land, Water and Atmosphere Degradation by Rylee Gentry https://padlet.com/gentryryl/xkigz838fwqdkc7i 2.2, 2.3 and 2.4 Oxford Textbook en-us 2022-02-09 03:20:58 UTC 2025-11-14 14:11:39 UTC hello@padlet.com Land Degradation gentryryl https://padlet.com/gentryryl/xkigz838fwqdkc7i/wish/2037004045 Land Degradation - The loss of productivity and decline in fertility of land-based environments as a result of human activity.
- Affects a quarter of the world's total land area and 38% of world's farmed areas.
- 1.5 million people are affected by directly land degradation.
- Contributes to climate change as degraded land stores less carbon dioxide than natural land such as rainforests.

Type 1 - Soil Degradation - The loss of fertility of the soil, often due to a chemical change.
- Can degrade by becoming compacted by hard-hooved animals or become acidic due to a build up of fertiliser or loss of soil nutrients.
- One of the greatest problems with soil degradation in Australia is the build-up of salt in the topsoil(salinity).

Type 2 - Soil Erosion - Where soil is gradually worn away by natural phenomena.
- Human activities can accelerate erosion in many areas.
- Cleared land is much more vulnerable to wind, gully and sheet erosion.
Much of Australia is at risk from one or more types of erosion.

Type 3 - Ecosystem Decline - When natural ecosystems of an area become degraded through loss of vegetation, invasive species or a decline in streams or rivers. 
- When coupled with a quality loss in soil, degradation can lead to desertification, particularly in areas close to existing deserts.

]]> 2022-02-09 03:30:40 UTC https://padlet.com/gentryryl/xkigz838fwqdkc7i/wish/2037004045 Land Degradation gentryryl https://padlet.com/gentryryl/xkigz838fwqdkc7i/wish/2039516855 Land Degradation - The loss of productivity and decline in fertility of land-based environments as a result of human activity.
- Affects a quarter of the world's total land area and 38% of the world's farmed areas.
- 1.5 million people are directly affected by land degradation.
- Contributes to climate change as degraded land stores less carbon dioxide than natural land such as rainforests.

Type 1 - Soil Degradation - The loss of fertility of the soil, often due to a chemical change.
- Can degrade by becoming compacted by hard-hooved animals or become acidic due to a build up of fertiliser or loss of soil nutrients.
- One of the greatest problems with soil degradation in Australia is the build-up of salt in the topsoil(salinity).

Type 2 - Soil Erosion - Where soil is gradually worn away by natural phenomena.
- Human activities can accelerate erosion in many areas.
- Cleared land is much more vulnerable to wind, gully and sheet erosion.
Much of Australia is at risk from one or more types of erosion.

Type 3 - Ecosystem Decline - When natural ecosystems of an area become degraded through loss of vegetation, invasive species or a decline in streams or rivers. 
- When coupled with a quality loss in soil, degradation can lead to desertification, particularly in areas close to existing deserts.

]]> 2022-02-10 05:26:08 UTC https://padlet.com/gentryryl/xkigz838fwqdkc7i/wish/2039516855 Land Degradation gentryryl https://padlet.com/gentryryl/xkigz838fwqdkc7i/wish/2039520967 Land Degradation - The loss of productivity and decline in fertility of land-based environments as a result of human activity.
- Affects a quarter of the world's total land area and 38% of the world's farmed areas.
- 1.5 million people are directly affected by land degradation.
- Contributes to climate change as degraded land stores less carbon dioxide than natural land such as rainforests.

Type 1 - Soil Degradation - The loss of fertility of the soil, often due to a chemical change.
- Can degrade by becoming compacted by hard-hooved animals or become acidic due to a build up of fertiliser or loss of soil nutrients.
- One of the greatest problems with soil degradation in Australia is the build-up of salt in the topsoil(salinity).

Type 2 - Soil Erosion - Where soil is gradually worn away by natural phenomena.
- Human activities can accelerate erosion in many areas.
- Cleared land is much more vulnerable to wind, gully and sheet erosion.
Much of Australia is at risk from one or more types of erosion.

Type 3 - Ecosystem Decline - When natural ecosystems of an area become degraded through loss of vegetation, invasive species or a decline in streams or rivers. 
- When coupled with a quality loss in soil, degradation can lead to desertification, particularly in areas close to existing deserts.

]]> 2022-02-10 05:30:31 UTC https://padlet.com/gentryryl/xkigz838fwqdkc7i/wish/2039520967 Atmosphere Degradation gentryryl https://padlet.com/gentryryl/xkigz838fwqdkc7i/wish/2041553988 Atmosphere Degradation - The degrading of the atmosphere through the by-products of fossil fuel burning and other dangerous air pollutants and chemicals. 
  • Pollutants such as carbon, nitrogen and sulfur emitted from factories and transport are disrupting the natural balance of atmospheric gases. 
  • This change is a large contributor to the global temperature rising and the climate dramatically changing.

Air Pollution - The world’s worst environmental health risk today, caused majorly by the emissions from factories.  
  • Causes increased rates of asthma, lung and heart disease 
  • Approximately 3.5 million (3500000) people die from environmental air pollution annually 
  • 4.3 million (4300000) are estimated to die from indoor air pollution annually.
  • Although regulations are underway to reduce air pollution, some countries' air pollution is still getting worse, especially in Asia and Africa.
  • This is mainly due to population growth and expansion as cheap energy is needed to power new cities.

India - An Air Pollution Hotspot 
  • India has some of the highest levels of air pollution according to the WHO and it is estimated that half a million Indians die prematurely from the air pollution annually.
  • Most of the air pollution comes from car engines in the congested traffic of India but some is also produced in the factories providing the cities with energy.
]]> 2022-02-11 02:19:16 UTC https://padlet.com/gentryryl/xkigz838fwqdkc7i/wish/2041553988 Water Degradation (Harman) gentryryl https://padlet.com/gentryryl/xkigz838fwqdkc7i/wish/2041554882 Water Degradation
Inland bodies of water are one of the most degraded environments in the world. Human activities have lowered the quality and quantity of usable water.

Causes:
  • Of all the 292 rivers in the world, 2/3 have been disrupted by dams.
  • Pollution: shipping, fishing, and oil drilling.
Consequences:
  • Water pollution has devastating effects, people lose access to clean drinking water.
  • Fish or other animals who depend on water die or there will be a slow decline in population.


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