Abstract:Southern Jiangxi is an important iron-absorbed rare-earth mineral production base of China, however, strip- mining can influence the soil and environment, especially in water and soil loss. In this study, a typical tailing heap water and soil loss zone was chosen and field measurement was taken to study soil erosion type and degree, meanwhile the typical water and soil loss route was monitored. The result showed that the gully mean erosion modulus were about 3.73×104 t/(km2×a), rill mean erosion modulus were 1 651.2 t/(km2×a) and erosion modulus increased with gradient increasing. During the rainfall, a great deal of sediment was transported. The water and soil loss condition inside the erosion gully was in erosion state, and erosion depth constantly increased. The erosion depth turned to decrease at a distance of 66 m far from the gully head, and decreased further when runoff flowed outside the gully. The erosion depth was 0 cm at about 60 m distance outside the gully, then sediment deposited gradually with increasing distance. Finally, the erosion condition turned to deposit.