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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. China's rapid industrialization could cause this area to drastically increase.
However, human activities contribute the most to soil erosion in the Loess Plateau in recent years. It is estimated from historical records that forest cover on the Loess Plateau declined by a factor of eight during the last three millennia, reaching a low in 1949 leading to yearly soil erosion of 3700 tons of soil per km 2. Especially the ...
South America is another area vulnerable by desertification, as 25% of the land is classified as drylands [73] and over 68% of the land area has undergone soil erosion as a result of deforestation and overgrazing. [74] 27 to 43% of the land areas in Bolivia, Chile, Ecuador and Peru are at risk due to desertification. In Argentina, Mexico and ...
Soil erosion is the main factor for soil degradation and is due to several mechanisms: water erosion, wind erosion, chemical degradation and physical degradation. Erosion can be influenced by human activity. For example, roads which increase impermeable surfaces lead to streaming and ground loss.
Listed in its renewable energy plan for 2021 to 2025, China has called for the “large-scale development” of its sand-plus-solar anti-desertification method, a strategy that Beijing began promoting around 2023. [15] [16] Solar farms in desert areas contribute to China’s renewable energy capacity while also helping to stabilize the ...
Deforestation, [30] with resulting desertification, water resource degradation, and soil loss has affected approximately 94% of Madagascar's previously biologically productive lands. Since the arrival of humans 2000 years ago, Madagascar has lost more than 90% of its original forest. [ 31 ]
The full title of Target 15.3 is: "By 2030, combat desertification, restore degraded land and soil, including land affected by desertification, drought and floods, and strive to achieve a land degradation-neutral world." [1] This target has one indicator: Indicator 15.3.1 is the "Proportion of land that is degraded over the total land area". [5]
Soil compaction and its direct effects are closely interrelated with indirect off-site effects that have a global impact, visible only in the long-term perspective. Accumulating effects may result in complex environmental impacts contributing to ongoing global environmental issues such as erosion, flooding , climate change and loss of ...