What is drought introduction?
Introduction to Droughts. Drought is shortly the unusual dryness of soil due to the levels of rainfall. Drought occurs when rainfall is significantly below average over a prolonged period. It is an event of shortages in the water supply, surface water, or groundwater. A drought can last for years, months or days.
What is the conclusion of drought and desertification?
Main conclusions of the review include: drought and desertification continue to threaten the livelihoods of millions of people in Africa. This trend is set to worsen with the onset of climate change, to which many countries in the region are most vulnerable.
What are the types of drought?
Types of Drought
- Meteorological Drought. Sequence of drought occurrence and impacts for commonly accepted drought types.
- Agricultural Drought.
- Hydrological Drought.
- Socioeconomic Drought.
- Ecological Drought.
What is desertification explain?
desertification, also called desertization, the process by which natural or human causes reduce the biological productivity of drylands (arid and semiarid lands).
What are 4 type of drought?
Categorized four basic approaches to measuring drought: meteorological, hydrological, agricultural, and socioeconomic.
What is drought PPT?
A lack or of for an unusually period of , involving less than the usual over 3 months A lack or shortage of water for an unusually long period of time, involving 50% less than the usual rainfall over 3 months DroughT is.
How can we prevent droughts?
Being mindful of the amount of water you use each day can be a powerful way to prevent droughts. Turning off the faucet while you brush your teeth, watering your garden early in the morning so less water evaporates, and installing low-flow plumbing fixtures all are good ways to prevent wasted water.
How is desertification formed?
The UN has defined desertification as a “diminution or destruction of the biological potential of the land which can lead ultimately to desert-like conditions.” Desertification can occur when extended periods of drought in arid, semi-arid, or dry sub-humid areas — known as drylands — sap the land’s productivity until …
What is effect of drought?
Drought can also cause long-term public health problems, including: Shortages of drinking water and poor quality drinking water. Impacts on air quality, sanitation and hygiene, and food and nutrition. More disease, such as West Nile Virus carried by mosquitoes breeding in stagnant water.