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Beetle kill in Colorado
The mountain pine beetle has killed large numbers of the lodgepole pine trees in the northern mountains of the US state of Colorado. Chemical prevention is effective but too costly for large-scale use. If not removed the dead trees increase the incidence of wildfires, and may contribute to climate change as they decay. Uses have been found for the dead wood including composting and in construction, and potentially to make biochar.
==Statistics==
The beetles infest the lodgepole pine, which makes up 8% of Colorado’s of forests. Lodgepole pines are found at elevations between 6,000-11,000 feet. A previous notable outbreak occurred in Colorado in the 1970s but was significantly less detrimental than the current infestation. Of the of lodgepole pine, about 70% have been damaged. High temperatures have allowed beetle infestations at higher elevations. According to a recent study, pine beetles have expanded their infestation by . The infestation is primarily concentrated in the state’s northern mountains. The infestation has been moving north and east from the Granby and Winter Park area towards Larimer County. It is estimated that beetle kill will leave behind a deforested area the size of Rhode Island.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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