Erodibility of New Zealand soils

The relevance of the concept of soil erodibility to potential land use planning and to sediment yield production is discussed. It is emphasized that erodibility must be considered in the context of a particular erosion type. A method of direct laboratory measurement of erodibility in the context of rainfall and overland flow erosion is reported, with preliminary results for samples of three South Island yellow-grey earths. These results are compared with those obtained by estimates based on easily measured soil properties.