Ecological economics is a trans-disciplinary field. It's not trying to be a subdiscipline of economics or a subdiscipline of ecology, but really it's a bridge across not only ecology and economics but also psychology, anthropology, archaeology, and history. That's what’s necessary to get a more integrated picture of how humans have interacted with their environment in the past and how they might interact in the future. It’s an attempt to look at humans embedded in their ecological life-support system, not separate from the environment. It also has some design elements, in the sense of how do we design a sustainable future.? It’s not just analysis of the past but applies that analysis to create something new and better.
Yale Insights, Robert Costanza, May 2010