Report Upon Forestry, 第 1 卷U.S. Government Printing Office, 1878 |
其他版本 - 查看全部
常見字詞
abundant acres Agriculture amount annual average bark beech belts birch black walnut box-elder branches cedar cent Champlain Canal chestnut climate cord cottonwood County covered cultivation deciduous diameter district earth effect European larch evaporation evergreens exposed feet high fence forest forest trees forestry France ground groves growing growth hectare height hemlock hickory inches injury insects Iowa kinds Lake land larch larvæ leaves less lumber maritime pine meters miles moisture mountains Norway spruce nursery observations Osage orange Pinus places plantations planted Platanus poplar prairie present protection Railroad rain rain-fall reboisement region River roots rows Saginaw sand Scotch season seed shade shelter shrub slopes snow soil species spring spruce streams summer surface temperature timber tion Total transplanting trunk valleys valuable vegetation white oak white pine white willow willow winds winter wood woodlands young