 | Marielos Alfaro - 1994 - 304 páginas
There was opposition from some elements of modern production sectors and it was claimed that environmental policies ... by inappropriate use through the cultivation of multi- purpose trees , including the production of biomass energy ... | |
 | 38 páginas
other sources than chemicals , e.g. organic fertilizers , solar energy , biomass energy , and others ( Ramsay , 1985 ) . ... The return to investments in farm land development , conservation or resource enhancement are also depressed as ... | |
 | Manuel Winograd - 1995 - 100 páginas
Indicators of a region's natural endowment , environmental problems and changes , and the condition of natural ... AND LAND - USE The functioning of ecosystems depends on the transformation of solar energy into plant biomass through ... | |
 | 396 páginas
There are local low- to medium - income farmers who are willing to risk some part of their land to raise trees ... people should have a role in policy - making to insure appropriate choices of land use , species , and management ... | |
 | 2004 - 866 páginas
NUTRIENT BUDGETS OF YOUNG PLANTATIONS WITH NATIVE TREES : STRATEGIES FOR SUSTAINED MANAGEMENT INTRODUCTION ... and the consequent degradation of land from mismanagement— shifting agriculture and cattle grazing are common problems . | |
 | 1980 - 284 páginas
0407 Kottmar , R.M. The energy crisis ; frctless and scluticns . Meeting of National Industry . [ 1 ] . ... ard issues . washington , IC ( EUA ) . 1977. ... Energy conservation waste utilization research an development plan . | |
 | 290 páginas
C407 Kottaen , R.H. ibe energy crisis ; Fretless and sclutions . ... Energy dilenas -- an overvies of 0.9 . energy problems ard issues . ... Energy conservation waste utilization research an development plan . | |
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