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.
1 Psychoanalytical Criticism Focuses on psychological dimensions of the work. Online Examples: A Freudian Approach to Erin McGraw's A Thief by Skylar Hamilton Burris.  Marxist Criticism Focuses on ways texts reflect, reinforce, or challenge the effects of class, power relations, and social roles.