摘要：Developing institutions to handle human–environment interactions well is important. In relation to that, the theoryof resource regimes, and the themes of fit, interplay, and scale—as originating not least in the work of Oran Young—are core.His work is very impressive. At the same time we observe two sets of issues where we think further development is needed.The first relates to the ontological underpinning of Young's conceptual framework. The second set of issues concerns thedefinitions of and the relationships between the concepts of fit, interplay, and scale. Regarding the former, we emphasize issuesrelated to "marrying" different theories about human action. Regarding the latter, we note that while the three concepts have alot of practical appeal, there are still some important challenges surfacing, not least when using them in empirical research. Weanalyze three challenges: the definitions of the concepts; their internal overlap; and finally, the way environmental regimes aredefined and understood as opposed to the wider institutional context of the economy. Our paper offers some direction for howto move forward on the issues specified
关键词：fit; environmental governance; human action; human–environment interactions; institutions; international;environmental agreements; interplay; Oran Young; rational choice; resource regimes; scale; social construction
