Figure 1. Kriged Surfaces of Percent Basal Area (top) and Percent Canopy Dieback (lower) within the Anf. Title: Landscape Patterns of White Ash (fraxinus Americana) Health in the Allegheny Plateau Region
نویسندگان
چکیده
To assess white ash (Fraxinus americana) health status in the Allegheny Plateau region via 1) examination and refinement of existing FHM/FIA plot data and 2) establishment and sampling of additional ash health plots to enhance existing FHM/FIA data. This enhanced sampling will allow us to explore, in detail, how topographic position and site characteristics (e.g., soil pH and nutrition) are related to ash decline and mortality patterns across the landscape. Additionally, we will create a formula to convert between FHM canopy health ratings (dieback, crown density, etc) and a user-friendly health rating system developed for use by managers and based on the typical decline progression of ash trees. Finally, this enhanced ash monitoring plot will serve as a basis to monitor future ash mortality with the anticipated arrival of emerald ash borer (EAB) within the next five to ten years.
منابع مشابه
White ash (Fraxinus americana) decline and mortality: The role of site nutrition and stress history
0378-1127/$ see front matter Published by Elsevier http://dx.doi.org/10.1016/j.foreco.2012.08.049 ⇑ Corresponding author. Tel.: +1 814 563 1040; fax E-mail address: [email protected] (A.A. Royo). Over the past century, white ash (Fraxinus americana) populations throughout its range have deteriorated as a result of declining tree health and increased mortality rates. Although co-occurring factors ...
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