Related by context. Frequent words. (Click for all words.) 66 desertification 66 sedimentation 64 soil fertility 62 siltation 61 deforestation 61 overgrazing 60 erosion 58 vegetation 57 environmental degradation 56 coastal erosion 55 biodiversity 54 subsidence 53 soils 53 stormwater runoff 53 acid rain 53 cropland 53 Erosion 52 compaction 52 wetland 52 salinity 51 wetlands 51 silt 51 ponding 51 topsoil 51 pollution 51 reforestation 51 noxious weeds 50 sediment 50 drainage 50 invasive weeds 50 afforestation 50 wildlife habitat 50 mosquito breeding 49 carbon sequestration 49 grasses 49 bio diversity 49 drainage ditches 49 Deforestation 49 tillage 49 weeds 48 croplands 48 beach erosion 48 mangroves 48 embankments 48 replanting 48 acidification 48 crop yields 48 invasive species 47 degradation 47 mangrove forests 47 insect pests 47 carbon sinks 47 Vegetation 47 ecological 47 algal blooms 46 evaporation 46 retaining walls 46 planting trees 46 stormwater 46 mangrove 46 grassland 46 native grasses 46 flooding 46 prolonged drought 46 tree planting 45 algae blooms 45 Sediment 45 arable land 45 floodplains 45 landslip 45 waterlogging 45 overgrowth 45 grasslands 45 biodiversity conservation 45 watercourse 45 hydrological 45 swales 45 grazing 44 droughts 44 floodplain 44 crops 44 irrigated 44 water borne diseases 44 mulching 44 impervious surface 44 irrigation 44 seepage 44 farmland 44 urban sprawl 44 beneficial insects 43 stormwater drainage 43 defoliation 43 forages 43 floods 43 watersheds 43 mulches 43 wildlife habitats 43 riverbanks 43 ecosystems 43 thatch 43 retention ponds