Environmentalism: Which trees can be planted successfully in dry, desert areas ? Which tree species require less water and have strong resistance to dry weather and harsh climate?

It all depends on much more than temperatures. 1) Figs can certainly survive these conditions http://homeorchard.ucdavis.edu/plant_Fig.pdf 2) Olives are grown in hot conditions 3) bananas like it hot 4) Date palms and Coconuts I think citrus fruit is no longer seen as a good idea in the heat. But Oranges and limes are traditional crops.

Almonds and carob trees also tolerate desert conditions well, and they can tolerate mild soil salinity.

Web pages: http://www.hotgardens.net/fast_growing_trees.htm http://www.weekendgardener.net/tree-information/drysoil-100810.htm http://www.birdsandblooms.com/Gardening/General/Heat-Tolerant-Trees---Shrubs/ Books: http://www.amazon.com/Trees-Shrubs-Dry-California-Landscapes/dp/0960598804/ref=sr_1_8?s=books&ie=UTF8&qid=1379826764&sr=1-8&keywords=trees+dry http://www.amazon.com/Plants-Dry-Climates-Select-Revised/dp/1555612512/ref=sr_1_1?s=books&ie=UTF8&qid=1379826812&sr=1-1&keywords=trees+dry+climates http://www.amazon.com/Plants-Dry-Climates-Duffield-j/dp/1555612709/ref=sr_1_3?s=books&ie=UTF8&qid=1379826812&sr=1-3&keywords=trees+dry+climates

KKL-JNF landscapes the Israel's arid region to grow forests. There is this company Groasis which claims to have technology that enables trees to develop their root systems and self sustain even in dessert. Below is their video planting trees in Dubai dessert and how it works. And since we are discussing India, you should check out the link below of Afforestt technology. The ability to grow forests in short time period and in small spaces