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This article in SSSAJ

  1. Vol. 38 No. 2, p. 366-368
    Received: July 13, 1973
    Accepted: Nov 7, 1973

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Afforestation Alters Prairie Soil Nitrogen Status1

  1. R. F. Fisher and
  2. R. P. Eastburn2



Two prairie soils were examined after 20-years of occupancy by four tree species to determine what alterations had occurred. Bulk density, exchangeable bases, pH, and organic carbon had not changed in the 0 to 10-cm soil layer. Red pine (Pinus resinosa) and Japanese larch (Larix leptolepis) caused significant increases in total N and a change in N form. Tulip tree (Liriodendron tulipifera) caused a significant change in N form while basswood (Tilia americana) caused no significant alteration. From this we conclude that alteration in soil N form is one of the first changes to occur following afforestation.

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