Related by context. Frequent words. (Click for all words.) 61 salination 60 Soil erosion 59 soil salinity 58 salinization 58 unplanned urbanization 57 prolonged droughts 57 overgrazing 57 periodic droughts 55 Armyworms 55 Spider mites 54 groundwater depletion 54 overexploitation 54 overfishing pollution 54 ecological degradation 53 Droughts 53 severe droughts 53 combating desertification 53 soil erosion 53 rampant deforestation 52 peat swamps 52 drylands 51 pasture grasses 51 nutrient runoff 51 Severe drought 51 arid regions 51 environmental degradation 51 habitat fragmentation 51 Rapid urbanization 51 nitrogen deposition 51 frequent droughts 51 Poyang Lake 51 herbicide resistant crops 51 desertification 50 scanty rainfall 50 rainfed 50 urbanization 50 irrigated crops 50 streambanks 50 leafless charred trunks 50 denudation 50 rapid urbanization 49 shelterbelt 49 fertile soils 49 nitrate concentrations 49 groundwater extraction 49 prolonged drought 49 parching 49 deciduous forests 49 AM# KDWN News 49 soil fertility 49 pasturelands 49 nesting habitats 49 semi arid regions 49 wetland ecosystems 49 woody vegetation 49 arable lands 49 Sedimentation 49 recharge groundwater 49 shelterbelts 49 armyworm 49 Powdery mildew 49 floods droughts 48 eucalyptus plantations 48 gully erosion 48 delicate ecosystems 48 riparian zones 48 soils 48 reed canary grass 48 agro pastoral 48 Melting glaciers 48 Desertification 48 hydrologic cycle 48 phosphorus runoff 48 stripped hillsides 48 seawater intrusion 48 sedimentation 48 Invasive plants 48 Urbanization 47 Entire forests 47 drought tolerant crops 47 siltation 47 typhoid cholera 47 overgrazed 47 freshwater habitats 47 acidic soils 47 irrigated lands 47 habitat degradation 47 karez 47 rotting vegetation 47 droughts 47 Schistosomiasis 47 Seasonal rains 47 irrigating crops 47 locust infestation 47 arid lands 47 hydrological cycle 47 irrigated agriculture 47 permafrost thaws 47 Feral hogs 47 freshwater ecosystems 47 smog acid