Forest ecology Forests 2 Forests and Forest Trees (Biology and Ecology) 2 Forests and forestry 2 Plants 2 Trees 2 Woody plants 2 Agriculture 1 Agroforestry and Multipurpose Trees: Community, Farm and Social Forestry 1 Air-Pollution-Environmental aspects 1 Animal Ecology 1 Atmospheric carbon dioxide 1 Biological Resources (General) 1 Biological Resources (Plant) 1 Botanical composition 1 Carbon dioxide 1 Climax communities 1 Environmental impact 1 Forest consevation 1 Forest dynamics 1 Forest landscape management 1 Forest plants 1 Forest trees 1 Grasslands 1 Grasslands and Rangelands 1 Grazing 1 Greenhouse effect 1 Greenhouse gases 1 Growth 1 Herbivores 1