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Title: Evaluating ecoregion-based height-diameter relationships of five economically important Appalachian hardwood species in West Virginia

Author: Brooks, John R.; Wiant, Harry V., Jr. Jr.;

Date: 2007

Source: In: McRoberts, Ronald E.; Reams, Gregory A.; Van Deusen, Paul C.; McWilliams, William H., eds. Proceedings of the seventh annual forest inventory and analysis symposium; October 3-6, 2005; Portland, ME. Gen. Tech. Rep. WO-77. Washington, DC: U.S. Department of Agriculture, Forest Service: 237-242.

Publication Series: Other

   Note: This article is part of a larger document. View the larger document

Description: Five economically important Appalachian hardwood species were selected from five ecoregions in West Virginia. A nonlinear extra sum of squares procedure was employed to test whether the height-diameter relationships, based on measurements from the 2000 inventory from West Virginia, were significantly different at the ecoregion level. For all species examined, the null hypothesis was rejected indicating that at least one of the ecoregion specific parameters was not equal to zero. In addition, 56 percent of the paired ecoregion tests indicated significant height differences. Across all species and ecoregion combinations, average height error ranged from ?3.6 to 7.6 ft for the statewide model.

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Brooks, John R.; Wiant, Harry V., Jr. 2007. Evaluating ecoregion-based height-diameter relationships of five economically important Appalachian hardwood species in West Virginia. In: McRoberts, Ronald E.; Reams, Gregory A.; Van Deusen, Paul C.; McWilliams, William H., eds. Proceedings of the seventh annual forest inventory and analysis symposium; October 3-6, 2005; Portland, ME. Gen. Tech. Rep. WO-77. Washington, DC: U.S. Department of Agriculture, Forest Service: 237-242.

 


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