Denitrifying bacteria are optimally adjusted to the soils in this environment type.
What are deserts?
100
It is projected that a decrease of this weather event due to Global Warming will cause widespread desertification.
What is precipitation?
100
A rise in albedo is due to a greater amount of this characteristic of desertification.
What is soil exposure?
100
Shrubs localize soil fertility under their canopy, leading to the development of these.
What are "islands of fertility"?
100
This is an unsustainable use of land by livestock, and is a major cause of desertification.
What is overgrazing?
300
This state, common in waterlogged soils, speeds up denitrification in arid environments.
What is anaerobic?
300
This term describes relative shortages of water, leading to restrictions on human consumption.
What is water scarcity?
300
Slashing and burning of natural forest and bushland in order to clear land for annual agriculture is the main cause of desertification in this major semi-arid grassland in Northern Africa.
What is the Sahel?
300
The heterogeneity of soil resources promotes the invasion of these?
What are shrubs?
300
This human use is characterized by overuse of chemical fertilizers, lack of crop rotation, and poor irrigation methods which lead to destructive erosion.
What is unsustainable farming?
500
Decreased rainfall and organic activity increases this basic soil measurement, which increases rates of denitrification.
What is soil pH?
500
Building this is one way to prevent wind erosion in sandy areas where irrigation is scarce.
What is a sand fence?
500
This is the name for the hypothesis that states that removing vegetation increases albedo, resulting in lower surface temperatures and less rainfall.
What is the "Charney effect"?
500
These are concentrated under shrubs, whereas wind and water erosion remove these from intershrub spaces.
What are soil resources?
500
This increase has led to strains on the environment and soils, especially in dryland and developing countries.