I came across this interesting essay by Charles Waldheim in PLACES and it is on topic with the posts re new urban food gardens and the discussions around urban decay, Landscape Urbanism and Ecological Urbanism.
The categories of agrarian and urban are usually understood as distinct. Across many disciplines, and for centuries, the country and the city have been defined in opposition to one another. But today, in striking contrast, design culture and discourse abound with claims for the potential for urban agriculture. As environmental literacy among designers and scholars has grown, so too has enthusiasm for agricultural production in and around cities. Fueling this trend is rising public interest in food and its production and distribution in a globalized world.