There are two types of indicators of environmental impact: means-based, which is based on the farmer's production methods, and effect-based, which is the impact that farming methods have on the farming system or on emissions to the environment.
Cultural criticism, or cultural studies, is related to New Historicism but with a particular and cross-disciplinary emphasis on taking seriously those works traditionally marginalized by the aesthetic ideology of white European males.
Obviously the field of cultural criticism is broad. We will focus on it particularly as it concerns itself with questioning the ways Western cultural tradition expressed in literature defines itself partly by stifling the voices of oppressed groups or even by demonizing those groups.