BUGGY SHANGRI-LA

摘要

A tiny beetle ordinarily kept in check by extreme cold is devastating lodge-pole pine forests in the western United States and Canada, thanks to warmer winters in those areas. Nearly 2 million acres of trees have been devoured by the mountain pine beetle (Dendroctonus ponderosae) in Colorado alone since 1996. "We can probably expect to lose 90 percent of the larger lodgepole pine trees in Colorado within the next five years," said Joe Duda, a forest management supervisor at the Colorado State Forest Service.