Sherpa

Existing user?

Geography

GCSE · AQA

QuestionsFlashcards

Urbanisation
Urban Growth in LICs & NEEs
Urban Change in the UK
Urban Sustainability
- Sustainable Urban Living
  6
- Urban Transport Strategies
  6

Global Variations in Development
Reducing the Development Gap
- Strategies to Reduce the Development Gap
  9
- Tourism in an LIC or NEE
  4
Economic Development in an LIC or NEE
Economic Change in the UK

Issue Evaluation
- Stakeholders & Viewpoints
  4
- Making & Justifying a Decision
  2

Causes of Desertification Flashcards

All 6 cards in this deck

How does the removal of fuel wood cause desertification?: Trees are cut for fuel, leaving soil bare and unprotected so it is eroded by wind and rain.
How does overgrazing cause desertification?: Too many animals eat the vegetation faster than it regrows, exposing the soil to erosion.
How does over-cultivation cause desertification?: Growing crops continuously without fallow periods strips the soil of nutrients, so it becomes infertile and erodes.
True or false? Climate change can cause desertification by bringing higher temperatures and less reliable rainfall.: True. Greater evaporation and drought kill vegetation, leaving soil exposed.
True or false? Desertification only happens inside existing hot deserts.: False. Desertification is the degradation of land on the semi-arid margins around deserts, which turns fertile land into desert.
How does population growth lead to desertification?: More people need more food and fuel, so land on desert margins is overgrazed, over-cultivated and stripped of trees, leaving soil bare and easily eroded.