作者: Borys Tkacz , Ben Moody , Jaime Villa Castillo , Mark E. Fenn
DOI: 10.1016/J.ENVPOL.2008.03.003
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摘要: Some of the greatest forest health impacts in North America are caused by invasive insects and pathogens (e.g., emerald ash borer sudden oak death US), severe outbreaks native pests mountain pine beetle Canada), fires exacerbated changing climate. Ozone N S pollutants continue to impact forests several regions America. Long-term monitoring indicators has facilitated assessment sustainability By linking a nationwide network plots with more extensive inventory, experts US have evaluated current trends for major developed assessments future risks. Canada Mexico currently lack networks plots. Development expansion these is critical effective impacts.