adaptation (biology) arboretums arboriculture archaeological dating archeologie atmospheric protection/air quality control/air pollution baum baumart biology bomen (biologie) botany classification climate change climatic changes dendrochronologie dendrochronology e-böcker ecology electronic book endemic plants endophytes entomology environmental chemistry environmental protection eucalyptus euthenics flora (biologie) forest archaeology forest plants forest products industry forestry forests and forestry fruit trees great britain guidebooks historic trees history hout identification guides ilmakehä ilman saastuminen ilmanlaatu ilmansuojelu kasvifysiologia kasvitiede landscape archaeology life sciences natural resources natural sciences nature nature / plants / general nature / plants / trees nature and nurture nature / plants / trees northeastern states old growth forest conservation old growth forest ecology old growth forests pflanzen (botanik) pictorial works plant biochemistry plant ecology plant physiology plant remains (archaeology) plant science plant sciences plant-fungus relationships plant-microbe relationships plantkunde plants plants in winter puut puutiede reforestation salt-tolerant crops seuranta shrubs systematik sähkökirjat tamarisks tree biology trees trees in cities trees, care of urban ecology (sociology) urban forestry urbanization volatile organic compounds watersheds woody plants ympäristökemia ympäristönsuojelu