Random Worldbuilding Questions (Biology, Geography, Society, etc.)

[Salbazier]

That is true, the type of sand and thus the available nutrients will depend on many factors and can probably be handwaved.

I'm thinking of Sahara-like

In general, if you have access to functionally unlimited water, you could probably slowly turn the desert into a forest.

That would take centuries. And require building aqueducts across the desert to deliver the water, as well forts guard it and workers settlements.

Hmm, Looks like I can expand this city idea into an empire. A future version of the setting. With the empire's capital holding power over the rest of the realm by being the primary source of water.