Skip to Main Content
A topographic index to quantify the effect of mesoscale and form on site productivityAuthor(s): W. Henry McNab
Source: Can. J. For. Res. 23: 1100-1107
Publication Series: Miscellaneous Publication
PDF: Download Publication (380 KB)
DescriptionLandform is related to environmental factorsthat affectsite productivity in mountainous areas. I devised a simple index of landform and tested this index as a predictor of site index ín the Blue Ridge physiographic province. The landform index is the mean of eight slope gradients from plot center to skyline. A preliminary test indicated that the index was significantly associated with slope position and three classes of landform (ridge, slope, and cove). In a test with data from four locations, site index of yellow-poplar (Liriodendron tulipifera L.) was significantly correlated with landform index for each location (r = 0.45-0.65). Landform index and two other topographic variables together accounted for 31 percent of the variation in yellow-poplar site index throughout the Blue Ridge province. Landform index is a conveniently measured site variable that may be useful in various forestry-related applications, including multivariate analysis of the distribution and composition of forest vegetation.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationMcNab, W. Henry. 1992. A topographic index to quantify the effect of mesoscale and form on site productivity. Can. J. For. Res. 23: 1100-1107
- Effects of Landform on site index for two mesophytic tree species in the Appalachian Mountains of North Carolina, USA
- Board-Foot and Diameter Growth of Yellow-Poplar After Thinning
- Growth and Development of Yellow-Poplar Plantations On Three Sites Ranging From 9 to 18 Years
XML: View XML