00989nam a2200241 a 450000100080000000500110000800800410001910000130006024500820007326001970015552002220035265000090057465000170058365300110060065300210061170000200063270000140065270000140066670000190068070000150069970000170071470000160073116731802014-10-14       2002    bl uuuu     u00u1 u    #d1 aZECH, W.  aNew approaches towards sustainability of land-use systems in Tropical Brazil.  aIn: GERMAN-BRAZILIAN WORKSHOP ON NEOTROPICAL ECOSYSTEMS. ACHIEVEMENTS AND PROSPECTS OF COOPERATIVE RESEARCH, 2000, Hamburg. Proceedings... Hamburg: SHIFT: MADAM: WAVES, 2002. p. 118-119.c2002  aThe SHIFT-Program ENV 44 tries to maintain soil fertility in the Bragantina area (Pará) by production of mulch material from fallow vegetation. A main focus with respect to sustainability deserves to be agroforestry.  aSolo  aUso da Terra  aBrasil  aSustentabilidade1 aCRAVO, M. da S.1 aLAABS, V.1 aPINTO, A.1 aLILIENFEIN, J.1 aGLASER, B.1 aTEIXEIRA, W.1 aLEHMANN, J.