Will there be enough land and plant nutrients to feed a world of 9 billion in 2050 ?November 2012
In the 2050’s the world population will climb up to approximately 9,3 billion, while at present our world has already reached the limit of arable lands which are reducing day by day, because of misuse of earth, pollution of enviroment, inadequate settlements and other reasons. Lyzadanger-flickerNovember 2012
GLASOD-Global Trends in Land Degradation Report Dec. 2006 By Uriel Safriel WORLD SOIL DEGRADATION SEVERITYNovember 2012
European Soil Bureau Research Report No:13 2003 EUROPE SOIL DEGRADATION SEVERITYNovember 2012
In many parts of the world, as well as in Europe, we are now testing the limits of the resilience and multi-functional capacities of soil.Globally, nearly 2 billion hectares of land are affected by human-induced degradation of soils (UN 2000). The food needs of increasing populations is leading to even greater intensification of agriculture, streching thereby the capacity of soils to release and absorb nutrients and chemicals.November 2012
Expension of built-up areas and infrastructure, particularly in large urban agglomerations, is sealing off the soil from productive uses. Each year an additional 20 million hectares of agricultural land become too degraded for crop production, or are lost to urban sprawl. Soils are being degraded physically and chemically due to erosion, exhaustion (nutrient depletion) and pollution.November 2012
Soil’s diverse living organisms are being reduced, and consequently the cleaning and filtering capacities of soils in many localities are being damaged beyond repair. Soil is a limited and not renewable resources, and unlike air and water damage to soil is not easily recoverable. Flickr:PabloTosco/OxfamNovember 2012
Average global temperatures are projected to rise by between 1.4 and 5.8 ˚C by 2100. By 2030 the increase will be rather lower than this between 0.5 and 1 ˚C . Mean sea level is projected to rise by 15 to 20 cm by 2030 and by 50 cm by 2100.The rise will lead to the loss of low-lying land through flooding, seawater intrusions and storm surges.November 2012
Under the EC baseline scenario, the water erosion risk is expected to increase by the year 2050 in about 80% of EU agricultural areas, as an effect of climate change.November 2012
To create a wealth by excessively consuming the world’s resources and making impossible demands to the environment is no more possible.Therefore we must accept more adequate consumption models for utilizing the world and human resources more rationally and must change from consumptive to thrifty economy. Nasa visible earth-NormanNovember 2012
References: 1)Down to earth: Soil degradation and sustainable development in Europe.2000.Environmental issues series No 16 2) World agriculture: towards 2015/2030 ,FAO Summary Report 3) Down to earth: Soil degradation and sustainable development in Europe.European Environment Agency.November 2012
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