RT Journal Article SR Electronic T1 Carbon Offsets JF Land Economics JO Land Econ FD University of Wisconsin Press SP 405 OP 416 DO 10.2307/3146898 VO 78 IS 3 A1 Wilman, Elizabeth A. A1 Mahendrarajah, Mahen S. YR 2002 UL http://le.uwpress.org/content/78/3/405.abstract AB The Kyoto Protocol allows countries to credit their greenhouse gas inventory with the emissions captured from afforestation or reforestation, providing the potential for carbon polluters to pay tree planters to store carbon. Trades of sequestration services are complicated because of growing time and monitoring difficulties. A delayed-response, optimal-control model, considering both sequestration and emission reduction possibilities, is developed. The aim is to clarify the good that is being traded, and the role that time plays in defining the good, and the nature of related transactions. In general, principal-agent contracts, rather than arms-length trades, would be expected. (JEL Q25)