"No Man's Land" was Greg Rucka's first foray into Batman-land (but his best, in my opinion, was Batwoman). Following the "Cataclysm" storyline - where a major earthquake all-but-destroyed Gotham City - the U.S. government evacuated, abandoned, and isolated the city, declaring it a "no man's land." Unfortunately, this left all the poor people who couldn't get out of town at the mercy of the criminals and super-criminals who refused to leave.
As for how much "No Man's Land" has influenced The Dark Knight Rises, it's entirely unclear at this point. Originally, it was thought that Bane might have a Tesla-esque Earthquake machine (the imploding football field in the trailers seemed to confirm this), but his mystery machine was revealed to be something else altogether.
That said, The Dark Knight Rises still seems to borrow a few elements from "No Man's Land" - particularly the way in which Bane and his mercenaries have cut Gotham City off from the rest of the world, leaving its citizens at the mercy of the villains inside. Might the Batman of TDKR also gather a coalition of super-friends (after his initial defeat at the hands of Bane) to help him eventually save Gotham from its "reckoning," as he did in the "No Man's Land" comic book? We'll soon find out.