America's Forests
1999 Health Update

This site provides a summary of forest ecosystem health issues in America’s forests. There are seven general concerns that have not changed from previous years:

  • Forest wildfire threat (fuel—live and dead vegetation—buildups)
  • Invasion of exotic (nonnative invasive) pests
  • Wildland/urban interface
  • Loss of biodiversity
  • Air pollution
  • Degraded riparian areas
  • Changed ecological conditions

Issues and Examples of Forest Ecosystem Health Concerns

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