Related by context. Frequent words. (Click for all words.) 60 soil salinity 60 periodic droughts 59 salination 58 salinization 55 Soil erosion 55 unplanned urbanization 54 groundwater depletion 54 prolonged droughts 53 herbicide resistant crops 52 worsening droughts 52 parasitic mites 52 nutrient runoff 52 Rapid urbanization 51 aridity 51 habitat fragmentation 51 habitat degradation 51 drier summers 51 overgrazing 50 Spider mites 50 fertile soils 50 Encroaching 50 Intensification 50 semi arid regions 50 Armyworms 50 wetter winters 50 Severe drought 50 pasture grasses 50 severe droughts 49 frequent droughts 49 agro pastoral 49 rainfed 49 Coral bleaching 49 desiccation 49 irrigated crops 49 drylands 49 inorganic fertilizers 48 river catchments 48 harvested acreage 48 herbicide resistant weeds 48 streambanks 48 nutrient deficiency 48 phosphorus runoff 48 Melting glaciers 48 Nominal GDP includes 48 ecological degradation 48 Sedimentation 48 overfishing pollution 48 soil erosion 48 irrigated lands 48 combating desertification 48 crop yields 48 overspreading 48 alkaline soils 47 FEWS Net 47 intensively farmed 47 hotter drier 47 nitrate concentrations 47 highly erodible 47 insect infestations 47 nitrogen deposition 47 arid lands 47 untimely rains 47 lakeshores 46 climatic conditions 46 Powdery mildew 46 drained soils 46 riparian zones 46 locust infestation 46 recharge groundwater 46 arid regions 46 freshwater habitats 46 landlessness 46 nutrient deficiencies 46 Corn soybeans 46 rampant deforestation 46 acidic soils 46 seawater intrusion 46 scanty rains 46 erratic monsoon 46 Adverse weather 46 vector borne 46 thawing permafrost 46 hydrologic cycle 45 thaw cycles 45 Soil moisture 45 overexploitation 45 pest infestation 45 El Nino Southern Oscillation 45 arable crops 45 corn earworm 45 wheat seedings 45 nutrient absorption 45 Droughts 45 degradation 45 nutrient uptake 45 Urbanization 45 livestock rearing 45 karez 45 Birth defects 45 saturated soils 45 salinity