However, under the different contexts and purposes, different
organizations made different definitions on co-benefits in terms
GHG emissions reduction and environment protection. US EPA
(2004) defined that co-benefits refers to two or more benefits
resulted from one or one set of measures. IPCC (2001, 2007) also
made their concept on co-benefits: "non-climate benefits resulted
from GHG mitigation policies, and these benefits were clearly included in the preliminary mitigation policies".