Coastal Zone Classification Based on Multisource Remote Sensing Imagery Fusion

Table 5

Classification criterion and interpretation sign for coastal visual interpretation.

Type	Classification criteria			Interpretation sign
	Geometry	Color	Texture
Shallow waters	Planar	Dark cyan	Smooth
Rocky coast	Planar or stripped	White or turquoise	Smooth
Sand beach	Stripped	White in the middle, turquoise in offshore, brownish in nearshore	Quite smooth
Silt beach	Schistose or stripped	Indigo	Quite smooth
Intertidal marshes	Irregular shape	Seashell rose	Smooth, irregular tidal bore marks
	Irregular shape	Camel hair	Quite rough
Mangrove forest	Irregular shape		Rough
Estuarine waters	Naturally curve or obviously flat, apparent boundary		Smooth
Sand island	Banding or irregular shape		Quite rough, obvious layering
Coastal salt lake	Regular shape		Smooth
Coastal fresh lake	Irregular, natural shape	From deep red to red	Quite smooth
Reservoirs	Regular geometrical shape	Mazarine	Smooth
Aquafarm	Regular banding	Dark cyan or aqua	Clear boundaries, chequered with black and white
Rice field	Regular shape, ridges, ditches, and other agricultural facilities	Seashell rose	Smooth
Salt pan	Regular rectangle and continuous distribution	Dark green, white	Clear boundaries, square shape gray and white, coarse
Others