Forest Health Conditions in Alaska-2007: A Forest Health Protection Report

摘要

This document is a compilation of annual aerial survey data supplemented by ground surveys, permanent plot monitoring efforts, site visits, and early detection work representing our current knowledge of forest health in Alaska. Our purpose in presenting this report is to help resource professionals, land managers, and other decision-makers identify and monitor existing and potential forest health risks and hazards. The information in this report was generated as a combined effort with our many cooperators, partners, and other stakeholders, especially the staff of the State of Alaska Department of Natural Resources Division of Forestry and the University of Alaska Cooperative Extension Service. This report is organized around four categories of damaging agents: insect pests, diseases and declines, abiotic agents and animal damage, and invasive plants. Each category is then structured by the extent of the individual agents impact. Where acreage extent is not known, our staff has estimated the relative extent of these agents.