Tag: Soil

Sulphur emissions
Soil degradation is a key global environmental indicator. Trans-border pollution in Europe has become a serious international and environmental problem. Sulphur emissions from industry in Eastern Europe is one of the mo...
07 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Conversion of terrestrial biomes
It is not possible to estimate accurately the extent of different biomes prior to significant human impact, but it is possible to determine the “potential” area of biomes based on soil and climatic conditions.
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Agricultural water withdrawals as proportion of total water withdrawals
Agriculture already consumes 70% of all global freshwater withdrawn worldwide and has depleted soil nutrients, resulting in N, P and K deficiencies covering 59%, 85%, and 90% of harvested area respectively in the year 20...
03 Jan 2008 - by IAASTD/Ketill Berger, UNEP/GRID-Arendal
Pig farming in the Caucasus ecoregion
Over the recent number of years, as the economy came to a standstill, individual farms have replaced collective farming and subsistence agriculture and livestock breeding (cattle, sheep and goat) have became common. Alon...
29 Jan 2008 - by Manana Kurtubadze
Sheep and goats in the Caucasus ecoregion
Over the recent number of years, as the economy came to a standstill, individual farms have replaced collective farming and subsistence agriculture and livestock breeding (cattle, sheep and goat) have became common. Alon...
29 Jan 2008 - by Manana Kurtubadze
Cattle in the Caucasus ecoregion
Over the recent number of years, as the economy came to a standstill, individual farms have replaced collective farming and subsistence agriculture and livestock breeding (cattle, sheep and goat) have became common. Alon...
29 Jan 2008 - by Manana Kurtubadze
Natural resources - agricultural potential
Soils underpin the production of a wide range of agricultural and industrial goods and services. Soil productivity is essential to agricultural activities - for food security, cash income and supporting the livelihoods o...
12 May 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
World poverty distribution
Three-quarters of all poor people still live in rural areas. They are heavily reliant on natural resources for their livelihoods: soil, water, forests and fisheries underpin commercial and subsistence activities and ofte...
12 May 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Trends in productivity 1981-2003 (greening and land degradation)
Unsustainable practices in irrigation and production may lead to increased salinization of soil, nutrient depletion and erosion. An estimated 950 million ha of salt-affected lands occur in arid and semi-arid regions, ...
02 Feb 2009 - by Hugo Ahlenius, UNEP/GRID-Arendal
Carbon storage in terrestrial ecosystems
Terrestrial ecosystems store about 2100 Gt C in living organisms, litter and soil organic matter, which is almost three times that currently present in the atmosphere.
27 May 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Boreal forest
The boreal forest biome holds the second largest stock of carbon; most of this is stored in the soil and litter. The draining of boreal forest peatlands, inappropriate forestry practices and poor fire management may al...
27 May 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
World soil demand
Human needs and ecosystem conservation
01 Nov 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
The vicious cycle of depletion
Agricultural systems in the temperate zone tend to occupy fertile soils that would have formerly supported temperate grassland or forest. Land clearance for croplands and pasture has greatly reduced above ground carbo...
27 May 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Arctic Soil Organic Carbon Content
A new assessment has estimated that there are 1,650 gigatonnes of carbon stored in the northern circumpolar permafrost region4, more than twice the amount of carbon in the atmosphere.
27 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Agriculture land use distribution - croplands and pasture land
The World's agricultural land is used in different ways, depending on climatic and soil factors, but also related to cultural and social issues. The majority of croplands, where rice, wheat, legumes and corn - among othe...
08 Mar 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Agriculture land use distribution - croplands and pasture land
The World's agricultural land is used in different ways, depending on climatic and soil factors, but also related to cultural and social issues. The majority of croplands, where rice, wheat, legumes and corn - among othe...
28 Mar 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
A World of Salt
Global water type by percentage. Estimates of global water resources based on several different calculation methods have produced varied estimates. Shiklomanov in Gleick (1993) estimated that: - The total volume of wat...
26 Jan 2009 - by Phillippe Rekacewicz, February 2006
Damming the world
The construction of large dams - defined as those with walls at least 15 metres high - has increased significantly over the past 50 years. The average height of new dams, estimated at 30-34 m from 1940-1990, increased to...
26 Jan 2009 - by Phillippe Rekacewicz, February 2006
Value for the avoided CO2 emissions during a 25-year transition period from primary forest to oil palm or other land uses
For the focus areas Batang Toru and Tripa in the two main orangutan habitats (forest on non-peatlands and peat) it was calculated what the values (USD/ha) would be of the avoided CO2 emissions over a period of 25 years. ...
13 Sep 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Areas that qualify for protection under Indonesian law
Under Indonesian law, areas that qualify for protection are based on slope (>40%), sensitive soil types, elevation (above 2000m), and peat land (>3m), thereby preventing any man-made development within most of the Sumatr...
13 Sep 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal
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