Related by context. Frequent words. (Click for all words.) 61 evapotranspiration 60 hydrologic cycle 55 evaporation 55 soil salinity 55 recharge groundwater 55 nitrification 54 salination 54 irrigations 54 Drip irrigation 52 groundwater recharge 52 salinity 52 nitrogen fixation 52 phytoplankton blooms 52 sedimentation 51 nutrient uptake 51 biogeochemical 51 evaporative 51 transpiration 51 upper troposphere 51 hydrological cycle 51 tropospheric 51 abiotic 51 airflows 50 Evaporation 50 nutrient loading 50 semi arid regions 50 riparian zones 50 soil erosion 50 irrigated crops 50 periodic droughts 50 Soil moisture 50 upwellings 50 riparian vegetation 50 Turbidity 50 soils 50 atmospheric nitrogen 49 desiccation 49 seed germination 49 feedwater 49 groundwater aquifers 49 acidic soils 49 terrestrial ecosystems 49 semi arid 49 aquifer recharge 49 streamflow 49 soil moisture 49 Soil erosion 49 poleward 49 hydrologic 48 Salinity 48 sorption 48 temperature gradient 48 tropopause 48 acidify 48 soil fertility 48 photosynthetic 48 ocean salinity 48 groundwater extraction 48 denitrification 48 Fertilizing 48 El Niño Southern Oscillation 48 hydrological 48 refugia 48 remotely sensed 48 shelterbelts 47 fertile soils 47 arid regions 47 alkaline soils 47 saturated soils 47 systematics 47 sulfide minerals 47 Melting glaciers 47 plankton blooms 47 glacial melt 47 radiative 47 irrigation 47 planktonic 47 insolation 47 isoprene 47 moisture 47 spatial scales 47 solar irradiance 47 Aeration 47 inoculum 47 irrigated 47 nitrogen fixing 46 Saharan dust 46 albedo 46 precipitation 46 freeze thaw cycles 46 stomata 46 drier summers 46 forbs 46 numerical modeling 46 Hydrological 46 fertigation 46 seeds germinate 46 oxidise 46 kg ha 46 marine sediments 46 aridity