利用放棄したセンチピードグラス(Eremochloa ophiuroides (Munro) Hack.)草地の植生推移

概要

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We studied the vegetation of centipedegrass, Eremochloa ophiuroides (Munro) Hack., in an abandoned pasture. The coverage of centipedegrass extended under grazing condition after 2002 when 2 kg/10a seeds were sown ; and reached over 90% in 2004. However, the coverage of the centipedegrass decreased after grazing was discontinued; moreover, the pasture was gradually abandoned ; and the centipedegrass finally disappeared in 2008. Instead of the centipedegrass, a tall-grass type species such as Imperata cylindrica and viny species such as Amphicarpaca edgeworthii and Cayratia japonica were found to dominate. However, the centipedegrass had continued to dominate in the control plot where grazing was maintained. The buried centipedegrass seeds could not be found in soil of both plots in 2010. Therefore, it was clear that the centipedegrass declined after the pasture was abandoned.
2012-01-15