湿原|しつげんshitsugen[0]heiban (flat)

1. nounmarshy grassland; wetlands

• Synonym湿地草原NeutralLiterally a grassland on wet ground, close in meaning to 「湿原」, but it is not a fixed word — normally just say 「湿原」.
• Related沼沢しょうたくWrittenWritten/formal term for marshes and swamps, i.e. waterlogged low ground in general; 「湿原」 specifically means grassland soaked with freshwater.
• Related沼地ぬまちNeutralMuddy, waterlogged ground; stresses deep mud and hard going, while 「湿原」 stresses grassy wet plains and often appears in scenic spot names.
• Related沼沢地しょうたくちWrittenWritten/formal geographic term for waterlogged, muddy marshland; 「湿原」 instead highlights the grassy wetland landscape.
• Antonym砂漠さばくNeutralAntonym: land with little rain and almost no vegetation, the opposite of the water- and grass-rich 「湿原」.

For grassy wetland scenery, as at Kushiro, say 「湿原」; it also appears in geographic and ecological writing. Use 「沼地」 for muddy marshland, 「沼沢」 and 「沼沢地」 as written terms for waterlogged ground, and 「砂漠」 for the opposite, a desert.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 淡水たんすいにより湿しめった草原そうげん。湿地しっちの一種いっしゅ。