Tag: Soil

Nigeria and the freshwater challenge
Out of the total precipitation reaching Nigeria, it can be separated into green and blue water. Green water (79% of the precipitation) represents the fraction of rainfall that generates soil moisture and which supports t...
02 Nov 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Current and potential arable land use in Africa
Out of the total land area in Africa, only a fraction is used for arable land. Using soil, land cover and climatic characteristics a FAO study has estimated the potential land area for rainfed crops, excluding built up a...
02 Nov 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Trafficking waste stories
Despite international efforts to halt dumping of illegal waste outrageous incidents occur. Collating relevant data is difficult but there is no doubt about the damage. Toxic waste causes long-term poisoning of soil and w...
15 Dec 2006 - by Emmanuelle Bournay
Oil pollution in Azerbaijan
There are hundreds of abandoned oil wells in Azerbaijan, and thousands in Kazakhstan, many of which have been submerged by the rising sea. There are reports of big leaks into the water, killing waterfowl and fish. Thousa...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Potential environmental hazards in the Caspian Sea Region
Oil slicks glittering on the surface of the sea and thousands of hectares of soil penetrated by oil leaking from abandoned wells are just part of the pollution that people living around the Caspian Sea must endure. In ad...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Oil spill off the coast of Apsheron peninsula
Thousands of hectares of soil on Azerbaijan’s Apsheron peninsula are unsuitable for agricultural use due to oil spills. The largest of these oil spills happened in May 1996. Oil extraction is happening off shore, in the ...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Child Mortality and Land Degradation
This map shows the correlation between the types of level of land degredation and child mortality. In West Africa there are a higher percentage of child mortality around areas that have higher levels of land degradation.
04 Oct 2005 - by Emmanuelle Bournay, Philippe Rekacewicz, UNEP/GRID-Arendal
Children Stunted and Land Degradation
Malnutrition in West Africa is a major concern as is environmental damage. This map shows the levels of stunted growth in children of West Africa in comparison to the level of land degradation. There does not seem to be ...
04 Oct 2005 - by Emmanuelle Bournay, Philippe Rekacewicz, UNEP/GRID-Arendal
Primary School Enrolment and Land Degradation
Education levels in West Africa are a major concern. This map shows the levels of primary school enrolment of children in comparison to the type level of land degradation. The more land degradation there is and there bec...
04 Oct 2005 - by Emmanuelle Bournay, Philippe Rekacewicz, UNEP/GRID-Arendal
Human Development Indicators by Land Degradation
Series of Human Development Indicators based on the levels of land degradation in West Africa. They show the levels of child mortality, stunted growth, primary school enrollment and adult female literacy rates.
04 Oct 2005 - by Emmanuelle Bournay, Philippe Rekacewicz, UNEP/GRID-Arendal
Adult female literacy and land degradation in West Africa
This map shows the possible spatial relation between the types of level of land degradation and adult female literacy. In West Africa there are a higher percentage of adult female illiteracy around areas that have higher...
04 Oct 2005 - by Emmanuelle Bournay, Philippe Rekacewicz, UNEP/GRID-Arendal
Barren Lands
Deforestation is well known for aggravating erosion. Bare soil has no protection against heavy rain, washing away immediately. On hillsides, it readily turns into mudslides leaving people very little time to seek refuge ...
01 Feb 2006 - by Emmanuelle Bournay, UNEP/GRID-Arendal
Hazardous industrial waste in Kadamjai
The Kadamjai antimony plant in southern Kyrgyzstan stands close to the Uzbek border and the town of the same name. The plant annually consumes 20 000 tones of ore. Ore waste dumps are exposed to erosion by rain and wind ...
16 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Industrial pollution and waste hotspots in the Ferghana Valley
Mercury mining, uranium mining, chemical and textile industries, oil facilities and processing plants which contribute to the contamination of the soil with highly toxic heavy metals are recognized as environmental chall...
16 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Trends in permafrost temperatures and active-layer thickness, Northern Tien Shan mountains
Mountain permafrost in Central Asia occupies approximately 3.5 million square kilometers and makes up about 15 per cent of the total permafrost area in the Northern Hemisphere. The climatic variations during the 20th ce...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Annual snowfall pattern for a typical mountain environment, Columbine Pass, Colorado 1971-2000
Mountain snow cover typically develops in the autumn and grows to a maximum depth in early spring. As day length and sun angles increase, so do air temperatures, causing snow cover to warm and begin to melt. Snow cover ...
01 Oct 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Permafrost extent in the Northern Hemisphere
Permafrost zones occupy up to 24 per cent of the exposed land area of the Northern Hemisphere. Permafrost is also common within the vast continental shelves of the Arctic Ocean. This subsea permafrost formed during the l...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
The Cryosphere, world map
Snow and the various forms of ice - the cryosphere - play different roles within the climate system. The two continental ice sheets of Antarctica and Greenland actively influence the global climate over time scales of mi...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Projected changes in permafrost (Northern Hemisphere)
Modelled permafrost temperatures (mean annual temperature at the permafrost surface) for the Northern Hemisphere (Arctic), derived by applying climate conditions to a spatially distributed permafrost model. (a) Present-d...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Severity of land degradation
The highest levels of land degradation is in Europe. Specifically degraded soils are found especially in semi-arid areas (Sub-Saharan Africa, Chile), areas with high population pressure (China, Mexico, India) and regions...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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