Vad är soil erosion

Programs to control erosion in Queensland began in the s and have been very successful. The 3 main principles to control erosion are to: use land according to its capability. protect the soil surface with some form of cover. control runoff before it develops into an erosive force. 1 2 Soil erosion is the denudation or wearing away of the upper layer of soil. It is a form of soil degradation. This natural process is caused by the dynamic activity of erosive agents, that is, water, ice (glaciers), snow, air (wind), plants, and animals (including humans). 3 4 Soil erosion is the removal of soil particles from one place to another via the movement of wind or water. It is a natural process that is greatly enhanced by human activities; this acceleration makes it one of the greatest threats to soil function globally as soil is essentially a non-renewable resource (ITPS , Metcalfe and Bui ). 5 The effects of soil erosion go beyond the loss of fertile land. It has led to increased pollution and sedimentation in streams and rivers, clogging these waterways and causing declines in fish and other species. And degraded lands are also often less able to hold onto water, which can worsen flooding. 6 Soil erosion is agriculture’s enemy: a major environmental threat to sustainability and productivity with knock-on effects on the climate crisis and food security. This is particularly true for places with the highest risk of erosion, such as watersheds in Indonesia, India, the Philippines and more. In these areas, protecting against soil. 7 8 Jorderosion är denudering eller nötning av det övre jordlagret. 9 erosion; they strengthen the soil thereby reducing the impact of rain and wind, they protect the banks of streams when floods come. 10 11
vad är soil erosion