Forest health monitoring in the United States: the 1990 experience in New England : Monitoring Air Pollution Impact on Permanent Sample Plots, Data Processing and Results Interpretation

1991

S. 12-21

3 Tab., 3 Abb., 12 Lit. Ang.

Unselbständiges Werk

200059813

The accomplished objectives of the 1990 FHM field season were the establishment of the permanent plot network and the collection of first-year crown-rating and growth data. The FHM location forest sample corresponds closely to characteristics of the forest resource in New England as reported in previous forest surveys. The distribution of locations and tree species are not significantly different from expectations based on previous surveys. The results of crown-rating data from uppercanopy trees indicates not pattern of major decline in any species. For many species, these data represent the first such measurement, so an exact interpretation is difficult. The full value of the data will be realized with plot remeasurements in succeeding years. This year's data will establish the baseline against which to identify changes in subsequent years.