Global erosivity map shows differences between climatic regionsJuly 05, 2017
Soil is our most important source of food. And yet, much of the world's soils are being eroded faster than they are formed.
The capacity of rain to cause soil erosion is known as erosivity. Soil erosion by water is the most serious cause of soil degradation globally. Heavy rainfall and extreme weather events aggravated by climate change increase soil erosion, which ultimately impacts on economies and people's lives.
Lack of data on rainfall erosivity patterns across the planet hampers the implementation of effective soil degradation mitigation and restoration strategies.
Responding to this shortcoming, the JRC has collected data on rainfall erosivity from 3 625 meteorological stations in 63 countries to establish the first ever Global Rainfall Erosivity Database (GloReDa) and a global erosivity map which illustrates the differences between climatic regions.
The highest rainfall erosivity is found in South America (especially around the Amazon Basin) and the Caribbean countries, Central Africa and parts of Western Africa and South East Asia. The lowest values are in mid- and high-latitude regions such as Canada, the Russian Federation, northern Europe, northern Africa, the Middle East and southern Australia.
It should be noted that high rainfall erosivity does not necessarily mean high levels of erosion, as factors such as soil characteristics, vegetative cover and land use also have an important impact on soil erosion.
The new global erosivity map is a critical input to global and continental assessments of soil erosion by water, flood risk and natural hazard prevention. It provides an important dataset for soil experts and policy makers for raising awareness on the importance of healthy soil for healthy life and for achieving the UN's Sustainable Development Goals.
The map is publicly available and can also be used by other research groups to perform national, continental and global soil erosion modelling.
Global rainfall erosivity assessment based on high-temporal resolution rainfall records
Global Rainfall Erosivity Database (GloREDa) http://esdac.jrc.ec.europa.eu/content/global-rainfall-erosivity
European Commission Joint Research Centre
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Related Erosion Reading:
Erosion: Changing Earth's Surface (Amazing Science)
by Robin Koontz (Author), Matthew Harrad (Illustrator)
Did you know that rain, waves, wind, snow, and ice can change the shape of Earth’s surface? They can create valleys, sea stacks, caves, and rock arches. Learn about the natural forces of erosion and how they shape the land. View Details
Weathering and Erosion (Science Readers: Content and Literacy)
by Torrey Maloof (Author)
The Earth's surface is always changing. Learn how weathering and erosion constantly reshapes the earth through wind, water, and more! Even people can drastically change the earth's surface. With the help of easy-to-read text and bright, colorful images, this reader simplifies challenging scientific topics while keeping students engaged from cover to cover. This reader also includes instructions for an engaging science activity where students can see what happens when land erodes. A helpful glossary and index are also included for additional support. View Details
Cracking Up: A Story About Erosion (Science Works)
by Jacqui Bailey (Author), Matthew Lilly (Illustrator)
Describes the process of erosion and how water, ice, wind, and sun wear away at Earth's surface. View Details
Erosion (Reading Essentials in Science)
by Virginia Castleman (Author)
Earth is changing every day as a result of erosion, and weather plays a major part. View Details
Erosion (Let's Explore Science)
by Shirley Duke (Author)
Examines the different forces of erosion, such as wind, waves, acid rain, and glaciers and explains how those forces affect the topography of the earth. View Details
Erosion and Weathering (Rocks: The Hard Facts)
by Willa Dee (Author)
Discusses the different causes of erosion and weathering, how these phenomena create problems for people, and their role in the rock cycle. View Details
Dirt: The Erosion of Civilizations
by David R. Montgomery (Author)
Dirt, soil, call it what you want—it's everywhere we go. It is the root of our existence, supporting our feet, our farms, our cities. This fascinating yet disquieting book finds, however, that we are running out of dirt, and it's no laughing matter. An engaging natural and cultural history of soil that sweeps from ancient civilizations to modern times, Dirt: The Erosion of Civilizations explores the compelling idea that we are—and have long been—using up Earth's soil. Once bare of protective vegetation and exposed to wind and rain, cultivated soils erode bit by bit, slowly enough... View Details
Soil Erosion and How to Prevent It (Everybody Digs Soil)
by Natalie Hyde (Author)
Looks at the processes of weathering, erosion, and deposition, and how they affect plant and animal life. View Details
Erosion (Princeton Series of Contemporary Poets)
by Jorie Graham (Author)
. . . . How clean
the mind is,
holy grave. It is this girl
della Francesca, unbuttoning
her blue dress,
her mantle of weather,
to go into
labor. Come, we can go in.
It is before
the birth of god. No-one
has risen yet
to the museums, to the assembly
and wings to the open air
market. This is
what the living do: go in.
It's a long... View Details
Erosion: How Land Forms, How It Changes (Exploring Science: Earth Science)
by Darlene R. Stille (Author), Farhana Hossain (Illustrator)
Describes the process of erosion, including how the power of wind, water, and glaciers have changed the Earth's surface. Includes information on fossils. View Details