• Overview
• Mountain Building
• Gondwana
• GR to Climate Change
• Watershed Management

Eingangsseite Types of soil erosion   - Process of soil erosion   - Test on soil erosion types Causes and effects   - Water erosion   - Wind erosion   - Human induced causes     -- Agriculture     -- Mining     -- Overgrazing Assessment   - Field Methods   - Using Remote Sensing and GIS for soil study   - Application of fallout radionuclides   - Universal soil loss equation   - a little Test Conservation   - Approaches     -- For non cultivated land     -- For urban areas and mining lands   - Methods   - Soil conservation for non-cultvivated land Arid area   - Eolian soil erosion   - Bioconcentration   - Satuconcentration   - Satuconcentrations and Micromorphology   - Duriconcentrations   - Abruconcentrations 01   - Abruconcentrations 02   - Abruconcentrations 03   - Abruconcentrations 04   - Conclusion Case studies   - Soil_Kenya   - Mongol Hovsgol   - Soil erosion in China   - Soil erosion in Vietnam Authors

Soil erosion assessment

For the soil erosion assessment used different methods: field methods, remote sensing and GIS methods, application of fallout radio nuclides, universal soil loss equation etc.   Estimates of erosion are essential to issues of land and water management, including sediment transport and storage in lowlands, reservoirs, estuaries, and irrigation and hydropower systems. Result of scientific investigation established soil erosion state. World soil erosion state Around the world, soil is being swept and washed away 10 to 40 times faster than it is being replenished, destroying cropland the size of Indiana every year, reports a new Cornell University study. FAO estimates that 140 million ha of high quality soil, mostly in Africa and Asia, will be degraded by 2010, unless better methods of land management are adopted. In the USA, soil has recently been eroded at about 17 times the rate at which it forms: about 90% of US cropland is currently losing soil above the sustainable rate. Soil erosion rates in Asia, Africa and South America are estimated to be about twice as high as in the USA. About 50 mm (almost 2 inches) per hectare (2.5 acres) of soil blew  away from cropland in Kansas during the winter of 1995-96. That's the equivalent of 650 tons of topsoil per hectare. Map of  world soil erosion affected by waters Source: UNEP - ISRIC (International Soil Reference and Information Centre). 1990, Global Assessment of Soil Degradation (GLASOD). Wageningen, Netherlands

Deep gully erosion in a loess plateau. Lanzhou, China Source: O. Batkhishig, 2007   River side soil erosion. Mongolia, East Khangai mountains Source: O. Batkhishig, 2005