Related by context. Frequent words. (Click for all words.) 65 semi arid 58 desertification 58 arable land 57 biodiversity 56 grasslands 55 soil fertility 54 bio diversity 54 tropical forests 54 arable 53 arid 53 ecosystems 53 crop yields 53 subsistence farmers 53 grassland 53 rangelands 52 cropland 52 tropical rainforests 52 forests 52 smallholder farmers 51 biodiversity conservation 51 tropical forest 51 croplands 50 irrigated 50 deforestation 50 carbon sinks 50 habitats 50 biosphere 50 overgrazing 49 urban slums 49 subsistence farming 49 soils 49 tropical rainforest 49 sub Saharan Africa 49 mangrove forests 48 savanna 48 biofuel crops 48 boreal 48 afforestation 48 crops 48 Amazon rainforest 48 Deforestation 48 extreme poverty 47 habitat 47 pastoralists 47 rangeland 47 coral reefs 47 diarrheal diseases 47 rainforests 47 savannah 46 Sub Saharan Africa 46 river basins 46 urbanization 46 climatic conditions 46 watersheds 46 Sahel 46 soil erosion 46 coastal ecosystems 46 rice cultivation 46 poverty eradication 46 transboundary 46 Coral reefs 46 ecological 46 climate change 46 catchments 46 Aral Sea 45 wildlife habitat 45 floods droughts 45 tropics 45 Millennium Development Goals 45 rapid urbanization 45 forested 45 marine biodiversity 45 maize crop 45 woody plants 45 Droughts 45 indigenous peoples 45 greenhouse gas concentrations 45 deserts 45 Agriculture Organisation 45 prolonged drought 45 chronic malnutrition 44 Sahel region 44 woodlands 44 environmental degradation 44 boreal forest 44 MDGs 44 salinity 44 undernourished 44 deforested 44 pastureland 44 Agriculture Organisation FAO 44 forestation 44 Urbanization 44 uplands 44 atmospheric CO2 44 vegetated 44 malnutrition 44 species 44 paddy fields 44 poverty alleviation 44 livestock grazing