Monday, September 22, 2008

IPAT Equation


The IPAT equation, though phrased mathematically, is a simple conceptual expression of the factors that create environmental impact. IPAT is an accounting identity stating that environmental impact (I) is the product of three terms: 1) population (P); 2) affluence (A); and 3) technology (T). It is stated I = P x A x T or I=PAT.