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The dynamic map of Spartina alterniflora in China and America. (A) Before the 1990s in China; (B) 1990–2000 in China; (C) 2000–2010 in China; (D) 2010–now in China; (E) before the 1990s in America; (F) 1990–2000 in America; (G) 2000–2010 in America; (H) 2010–now in America.
