Forest health monitoring: National status, trends, and analysis 2012This article contains other documents. View all titles contained within this article here.
The annual national report of the Forest Health Monitoring Program of the Forest Service, U.S. Department of Agriculture, presents forest health status and trends from a national or multi-State regional perspective using a variety of sources, introduces new techniques for analyzing forest health data, and summarizes results of recently completed Evaluation Monitoring projects funded through the national Forest Health Monitoring Program. Survey data are used to identify geographic patterns of insect and disease activity. Satellite data are employed to detect geographic clusters of forest fire occurrence. Data collected by the Forest Inventory and Analysis Program of the Forest Service are employed to detect regional differences in tree mortality. Relationships are assessed between macrolichen species richness and forest density, forest connectivity, and land cover. Macrolichen data are also used to investigate the effects of precipitation on indices used to develop nitrogen critical loads. Nine recently completed Evaluation Monitoring projects are summarized, addressing forest health concerns at smaller scales.