High angle overhead view of harvester felling trees in snowy forest in winter

high angle overhead harvester felling trees ecosystem damage thinning cut down spruce timber snowy forest winter cuttolength tree harvester deforest efficiency lumber timber trade aerial daytime fell sweden tree delimb bucking mechanized ecosystem top down coniferous environmental impact land clearing commercial timber production demands logging deforestation drone cuttolength logging forestry productivity cut machinery industry timber harvesting deforested europe snow destruction