黑土地切沟侵蚀的成因与危害

探讨了黑土地切沟侵蚀的成因，如地形、降水、土壤、植被以及人为等因素，还从土地资源、社会资源以及治理费用高昂等角度详细分析了切沟侵蚀的危害性，提出要深入研究切沟侵蚀发生发展规律，以期更好的防治模式．

CAUSES AND DAMAGES OF GULLY EROSION IN BLACK LAND

The loss of water and soil in the black land of North east China, with the characteristic that is unrenewable and recoverable, stands heavily in the way of the development of local agricultural production as well as socio economic advancement. The significant section among them, gully erosion, together with hillslope sheet erosion, destroys the valuable land resources. The factors of gully erosion are argued, such as topography, precipitation, soil, green cover as well as artificial operations. In addition, the extent of harm from gully erosion is explored from the angles of the damage of land resources, socio economic resources as well as the high price of recovering. It is proposed that the law of gully erosion in the process of initiation and expanding should be studied necessarily and fully for better patterns of preventing and recovering gully erosion.