Desertification is the process by which land becomes drier and degraded, as a result of climate change or human activities, or both. This leads to regular crop failure. The semi-arid landscape of the Sahel. What do you want to do? To understand how deserts spread, the causes and the implications on vulnerable populations. A contour stone line 25 to 30cm high with other stones behind is constructed.
It can have a damaging impact on both people and the natural environment. Which is the hottest month? Farmers were trained in laying out contours using a simple water tube level. Living World – Desertification Strategies. A project focussing on Acacia or gum trees is trying to help.
AmmaKK Member since 5 year ago 18 documents sold. Less than 50 years ago land in this region of the Sahel was productive Savannah, but is now dry desert because of decades of climate change and over intensive farming, forestry and land degradation.
Avoid resits and achieve higher grades with the best study guides, textbook notes, and class notes written by your fellow students. To understand how deserts spread, the causes and the implications on vulnerable populations. How has this animal adapted to its climate and surroundings?
Natural Hazards 1st year. Desertification is the process by which land becomes drier and degraded, as a result of climate change or human activities, or both. Which is the sahe, month? Preview 2 out of 3 pages.
Living World – Desertification Strategies
Earn hundreds of dollars each month by selling your written material to your fellow students. Many of the techniques used have used appropriate technology, which is suited to the needs, skills, knowledge and wealth of local people in the environment which they live. This results in less erosion and more water for the crops. Check out the photo beneath too! Lack of food and water can also mean cqse species such as cattle can die of starvation.
With less vegetation there is less transpiration and evaporation from the soil, causing less rainfall. Since the s, the Sahel has experienced drought conditions on a regular basis. The nutrients in the soil get washed or sauel away leaving soil infertile.
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Environmental impacts Seasonal rivers and water holes dry up, so organisms which live in them or rely on them for water may die. The villagers work together and it is a collective effort.
This region provides Africa with food and cash crops such as millet and cotton.
Widespread cutting down of trees for fuel. In addition, loss of species affects the availability of local medicines. There are no plants or leaves to intercept rain and soil is left exposed to hot sun so the sun bakes the soil and it cracks.
Living World – Desertification
Droughts are also often caused by the activity of humans as well. Increased soil erosion makes the land less fertile, creating a long-term issue for the farming community.
The semi-arid landscape of the Sahel. It can have a damaging impact on both people and the natural environment. Which is the coolest month? Link to iGCSE Population – How does a high fertility rate 7 children contribute to the problems caused by drought in this part of Africa? Eroded material is washed into rivers or water holes resulting in contamination. They also farm the land more intensively, which extracts nutrients and removes the natural vegetation.
Living World – Desertification.
Desertification the Sahel – Mindmap in IGCSE Geography
These stones slow down run off water and allow it time to infiltrate the ground and rich sediments to be trapped in the field. Human activities can make the effects of drought saheel. They were also given a tractor and digger tool specially adapted to dryland conditions. This leads to regular crop failure.