DotEarth notes that the new Ecuadorian constitution grants rights to nature -- making it a legal person, one presumes. Nature has "the right to exist, persist, maintain and regenerate its vital cycles, structure, functions and its processes in evolution.”
It's worth recalling, too, a precedent set in 1993 in the Philippine Supreme Court with regard to illegal logging (Minors Oposa v. Department of Environment and Natural Resources): Antonio Oposa established a right to sue on behalf of future generations.
P.S. 3 Oct: on a lighter note, the Ignobel Prize for Peace this year goes to the Swiss federal ethics committee on non-human biotechnology and the citizens of Switzerland for acknowedging the dignity of plant life.