120 likes | 244 Vues
The study examines two significant evaluations of wetland value, focusing on the impactful work by Dixon and Lal, as well as Costanza et al. from 1997. It highlights the drastic decline of U.S. wetlands between 1780 and 1980, during which an estimated 53% of the original 221 million acres were converted to agricultural land, often with federal government support. This conversion reveals the economic decisions made regarding wetlands and raises questions about their intrinsic value and ecological importance.
E N D
1. Topic 10: Two Valuation Studies Wetlands, by Dixon and Lal
Value of Everything by Costanza et al. (1997) Nature Between 1780 and 1980, an estimated 53 percent of the U.S.s original 221 million acres of wetlands were converted to other uses, primarily agriculture. Much of the conversion was subsidized by the Federal government, consistent with prevailing attitudes of the day. Between 1780 and 1980, an estimated 53 percent of the U.S.s original 221 million acres of wetlands were converted to other uses, primarily agriculture. Much of the conversion was subsidized by the Federal government, consistent with prevailing attitudes of the day.
2. Issue #1: Whats a Wetland Worth? Lost: 53 percent of U.S.s original wetlands. Subsidized conversion.