Study Area Yancheng Biosphere Reserve was established in 1983. The dominant plant species in grassy tidal lands are Cogongrass Imperate cylindrica var. A few Reed Phragmites communis grow in wet tidal lands. Reed lands Reed lands include the natural and artificial reed lands. In winter, local people cut down the reeds for papermaking and building.
Reeds grow along the sea wall and catchment area.
People plant reed in low lands of high tide area. Some reed bases change into rice or cotton fields after production for three or four years. Lands with Saltliving Wormwood Suaeda suaeda The tidal vegetation includes Wing Seepweed Suaeda hetroptera and Common Seepweed Suaeda Glauca. Aquacultural ponds Aquacultural ponds are artificial land types. People raise fish or shrimp in shallow water and cultivate reed around it.