01164naa a2200169 a 450000100080000000500110000800800410001910000160006024500480007626000090012430000140013352005940014765000230074170000200076470000130078477301970079720939372025-03-27       1997    bl uuuu     u00u1 u    #d1 aLEHMANN, J.  aSingle tree effects on soil organic matter.  c1997  ap. 58-66.  aIncreasing the soil orgamc matter (SOM) contents is an important factor for improving soil fertility. Not only the amount of organic carbon in soil is ecologically important for SOM stability, but also its physical and chemical properties. The appropriate technique for the assessment of ecologically relevant soil pools can vary between soils, and information about this is lacking for oxisols in the Amazon basin. This work should identify soil pools which are sensitive to land-use changes in terra firme oxisols and yield easy to handle techniques for the evaluation of SOM properties.  aMatéria Orgânica1 aCRAVO, M. da S.1 aZECH, W.  tIn: SHIFT PROJECT ENV 45 (Manaus-AM). Water and nutrient fluxes as indicators for the stability of different land use systems on the terra firme near Manaus. Manaus: EMBRAPA-CPAA : BMBF, 1997.