Observed Erosion Severity (2002)

Present and potential erosion are significant factors for land management and the environmental and economic sustainability of the land. Erosion is classified by type (e.g. sheet, soil slip or gully) and by severity. 'Observed Erosion Severity' type is also classified from 'negligible' to 'extreme'. Note that because of the varying nature of erosion processes, severity may refer to :- percent area coverage of erosion, size of erosion features in hectares, or in the case of stream bank erosion by length and lateral extent of erosion features.

当前及潜在的侵蚀作用对于土地管理以及土地的环境与经济可持续性具有重要意义。侵蚀根据类型（例如，面状侵蚀、土壤滑坡或沟壑）及严重程度进行分类。'观测侵蚀严重程度'类型亦从'可忽略'至'极端'进行分级。值得注意的是，鉴于侵蚀过程的多样性，严重程度可能涉及以下方面：侵蚀面积所占百分比、侵蚀特征面积（以公顷计），或河流岸侵蚀的情况，以侵蚀特征的长度和横向范围计。