1. Allen Savory's method of holistic grazing of herd animals improves desert soil fertility and productivity by concentrating grazing in small areas for short time periods of hours or days
2. Other permaculture methods are helpful too.
3. Desert greenhouses distill seawater to cool and water plants.
4. Bring seawater to deserts to feed Salt Water Plants: Sea Lettuce; Red Mangrove; Turtle Grass; Halimeda and maybe salt tolerant wheat and barley and Halophytes: Atriplex spp. and saltgrass.
5. Freezing seawater in cold arid regions separates salt from water, which can be used for irrigation.Arctic snowmelt can be channeled to arid regions.