Author(s)

L. Reintam, E. Kaar & I. Rooma

Abstract

Development of forest-soil systems on quarry detritus of open-cast oil-shale mining 10 "L. Reintam , E. Kaar & I. Rooma 1 Institute of Soil Science & Agrochemistry, Estonian Agricultural University, Estonia. 2Forest Research Institute, Estonian Agricultural University, Estonia. 3Institute of Geography, University of Tartu, Estonia. Abstract Studies were carried out in North-East Estonia on the skeletal calcareous detritus of open-cast oil-shale (kukersite) mining, afforested in 1962-1978 with two-year sets of Scots pine (Pinus sylvestris) and silver birch (Betula penduld). During 2- 3 decades highly productive stands developed with an average annual increment in the growing stock of 2-8 solid metres per hectare and with an average annual increase of 20-50 cm in height and 2-5 mm in the breast-height diameter. The depth of the O2-A-AC-BC profiles of simultaneously formed Calcaric Regosols and/or Rendzic Leptosols is 20-30 cm, in which 80-240 g m~* yr * of organic c

Keywords