Public project evaluation , environment and Sen's theory , Notizie di Politeia , 43/44 , 55-78 . ... Timber Management : A Quantitative Approach . ... Cost control in forest harvesting and road construction . FAO Forestry Paper no.99 .

Technologies for sustainable forest management in the northern zone , Costa Rica . ... only 60 percent of commercial cubic mater of standing timber ; ( 4 ) preplanned road and skid - road construction avoiding unnecessary logging damage ...

occurs depends in practice on : inherent characteristics of the land conditions , the cost of modifying them in relation to the value of the desired product ... For natural forests , harvesting technology should include the construction ...

... imposition of land taxes , land use planning , and closer monitoring of road construction . ... based on various models that analyze productive forest uses in different locations and subject to different harvesting rates .

Trimming costs and timber value in the crowns of Japanese Larch and Norway Spruce ( En holandés ) . ... ELVIRA MARTIN , L. M. y PELLON ARREGUI , R. An analysis of work methods in harvesting Pinus radiata in N. Spain ( En español ) .

( c ) Large - scale planting of teak by the Royal Forstry Departmnet and Forest Industries Organisation , established in 1968 , mostly ... and at broadly the same elevation low cost ways have been sought to control Imperata cylindrica .

The individual platforms were , however , the rule , since they allowed the planting of coffee trees in regular rows , an arrangement which made harvesting easier . When the road systems were marked with slopes not exceeding 7 per cent ...