arc-related spreading ocean ridges

area along radial sand ridges

barkhan ridges

between ridges

combination sowing on ridges with mulching

completely mulched alternating narrow and wide ridges with furrow planting

double ridges mulched with wide plastic film

double ridges rainwater harvesting

double ridges stage

double ridges with full film coverage

Entire membrane double ridges trench sowing

Longitudinal Ridges

modern tidal sand ridges

Mountain Ridges

multispreding ridges

Oceanic Ridges

Radial Sand Ridges

radial sand ridges in the South Yellow Sea

radiating ridges

rainfall harvesting with mulched ridges