Sloping spatial distribution of soil nutrient loss responds to spatial distribution of soil erosion patterns erosion intensity. Shallow gully ditch is the severest position of soil nutrient loss.

The look of erosion part of jade have eroded hole (Mayi Dong), Hang erosion, erosion spots, erosion ditch, erosion vein (mesh and whirlpool) and surface erosion, and so on.

The seabed terrain, sand wave migration and the growth of regional erosion ditch create subsea pipeline suspended span.