Total Basal Area of All Tree Species, 2012

Total Basal Area (BA) of all tree species, in square feet per acre. 

To monitor the potential hazards posed by invasive pathogens, the U.S. Forest Service's Forest Health Technology Enterprise Team (FHTET) created a national database designed to assess the potential hazards on tree mortality and identify forest ecosystems at risk of invasive or pathogenic threats. 

This data is in support of the National Insect and Diease Risk Map (NIDRIM), a nationwide strategic assessment and database of the potential hazard for tree mortality due to major forest insects and diseases. The goal of NIDRM is to summarize landscape-level patterns of potential insect and disease activity, consistent with the philosophy that science-based, transparent methods should be used to allocate pest-management resources across geographic regions and individual pest distributions. In other words: prioritize investment for areas where both hazard is significant and effective treatment can be efficiently implemented.

For more information on this dataset, please visit:

AppLCC's Ecosystem Services Conservation Atlas | Forest Pathogens: U.S. Forest Service Insect and Disease Risk Mapping