Environmental impacts Seasonal rivers and water holes dry up, so organisms which live in them or rely on them for water may die. With their assistance, you can become well prepared and can avoid having to retake exams. They were also given a tractor and digger tool specially adapted to dryland conditions. As population increases they increase the numbers of animals they keep, such as goats, which eat more vegetation. Droughts are also often caused by the activity of humans as well. Living World – Desertification Strategies. Have you written lots of study guides or notes?
Optional task in the booklet below. What do you want to do? To build up a case study of a major drought in the Sahel. This settled agriculture means that people farm too intensively which also drains the soil of its nutrients. Some scientists believe climate change has reduced rainfall or made it less predictable. They marked out the contours and dug out a foundation trench. Click on the blue tab below to access the worksheet.
Vegetation dies causing animals depending on it for food or shelter to perish or migrate. Widespread cutting down of trees for fuel.
Living World – Desertification Strategies
How much rainfall does the driest month receive? Fill in the relevant section on your case study sheet.
Study the embedded presentation underneath too. Add to cart – Free. Commercial farms growing cash crops such as cotton lose income, which may cause unemployment. With their assistance, you can become well prepared and can avoid having to retake exams. Have you written lots of study guides or notes?
The effects of desertification Desertification is a serious issue that affects over 1 billion people around the world. Overgrazing of animals iii. Construction of a dam on a large river iv. What is the annual temperature range? Many of the techniques used have used appropriate technology, which is suited to the needs, skills, knowledge and wealth of local srudy in the environment which they live.
All of these things reduce the amount of natural vegetation. Natural Hazards 1st year.
Case study: Sahara desert by Geography Teacher on Prezi
Droughts are also often caused by the activity of humans as well. How it saahel 2. Skip to navigation Skip to content. Complete the activities set out using the David Attenborough video to help you. We have even managed to reverse the effects of desertification.
Optional task in the booklet below. Some scientists believe climate change has reduced rainfall or made it less predictable. A contour stone line 25 to 30cm high with other stones behind is constructed. This means that the soil is degraded; losing fertility and structure. Planting pits are also used to hold more water around the plant and homemade compost is used to provide a fertility boost for the soil.
Desertification the Sahel – Mindmap in IGCSE Geography
People usually women and children travel further to find water, which means children miss school and the carrying of heavy loads can lead to back problems. People also draw more water out of the soil for irrigation.
In addition, loss of species affects the availability of local medicines. Living World – Desertification.
This has led to vegetation disappearing. Desertification leads to outmigration in countries such as Burkina Faso in the Sahel. Clean water is not available for people to drink, increasing the use of contaminated water and diseases such as cholera.
Living World – Desertification Strategies.
People also collect more firewood to keep warm at night or for cooking. Everything you need to know about selling on Stuvia.