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水土流失又称土壤侵蚀,是土壤及其母质受水力、风力、重力等作用,在各种自然和人为因素的影响下,发生各种破坏和移动的现象。自然因素是水土流失发生、发展的客观条件,主要包括气候(以降水和风为主)、地形、土壤、植被等;人为的因素是影响水土流失的主要因素,主要包括农、林、牧以及采矿、筑路等生产活动。我省水土流失现象,按其发生的性质,主要有风蚀和水蚀两种。风蚀是由风的动力剥蚀干旱地区土沙而造成的。据调查,风速4米/秒
Soil erosion, also known as soil erosion, is the result of various kinds of destruction and movement under the influence of various natural and man-made factors due to the action of water, wind and gravity on the soil and its parent material. Natural factors are the objective conditions for the occurrence and development of soil and water loss, including climate (mainly precipitation and wind), topography, soil and vegetation, etc .; human factors are the main factors that affect soil and water loss, mainly including farming, forestry, animal husbandry and mining , Road construction and other production activities. Soil and water loss in our province, according to the nature of their occurrence, are mainly two kinds of wind erosion and water erosion. Wind erosion is caused by the erosion of the earth and sand in arid regions by the power of the wind. According to the survey, the wind speed of 4 m / s