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An estimated 13% of desertification in Mongolia is caused by natural factors; the rest is due to human influence particularly overgrazing and increased erosion of soils in cultivated areas. [61] [62] During the period 1940 to 2015, the mean air temperature increased by 2.24 °C. [63] The warmest ten-year period was during the latest decade to 2021.
At least 90% of Mongolia's pastureland has experienced some level of desertification. [3] Between 1996 and 2009 up to a third of rivers dried out or were impacted by drought conditions. [3] It has been found that desertification is predominantly (approximately 87%) caused by human factors rather than natural factors.
Desertification: Human-led changes in land management practices lead to changes in the ecological characteristics of a region. Land mismanagement and climate change can lead to a loss of ecosystem services, such as through degradation of soil. [15] Together, these losses can result in desertification seen in arid and dry areas.
They are especially susceptible to damage from excessive human land use pressure. [3] The causes of desertification are a combination of natural and human factors, with climate change exacerbating the problem. Despite this, there is a common misconception that desertification in Africa is solely the result of natural causes like climate change ...
It can be caused by either livestock in poorly managed agricultural applications, game reserves, or nature reserves. It can also be caused by immobile, travel restricted populations of native or non-native wild animals. Overgrazing reduces the usefulness, productivity and biodiversity of the land and is one cause of desertification and erosion.
Desertification is one of the issues of environmental concern in Nigeria, particularly the northern part of the country. According to UNEP [4] in 1993, Northern Nigeria has one of the highest rates of deforestation in the world at about 3.5%, caused by land degradation, increase in agricultural intensity, over-grazing of livestock, and demand for fuel by cutting down trees.
Historic desertification is the study of the desert-forming process from a historic perspective. It was presumed in the past that the main causes of desertification lay in overuse of the land resulting in impoverishment of the soil, reduced vegetation cover, increased risk of drought and the resulting wind erosion. However recent projects to ...
Desertification remains a serious problem, consuming an area greater than the area used as farmland. Although desertification has been curbed in some areas, it is still expanding at a rate of more than 67 km 2 every year. 90% of China's desertification occurs in the west of the country. [27] Approximately 30% of China's surface area is desert.