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Notes: A Modified Growth Intercept Method for Predicting Site Index in Young White Pine Stands

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Abstract:

Growth intercept (GI) techniques were evaluated for estimating site quality in young Pinus strobus stands planted on old-field sites in the residual soil region of southern and eastern Ohio. Correlation between height growth of trees below breast height (BH) and height growth above BH was not statistically significant, and site index estimates were made using age at BH and height from BH to the growing tip. Five-year growth beginning 2 years above BH was significantly more closely correlated with height than was 5-year intercept beginning at BH. In equations developed for predicting site index, 5-year intercept in combination with age accounted for 73 percent of variation in height. Combining percent distance from ridge or total soil depth with GI and age increased variation accounted for by 6 and 3 percent, respectively, while including both factors in prediction equations increased variation accounted for by 9 percent. Forest Sci. 27:162-166.

Keywords: Pinus strobus

Document Type: Miscellaneous

Affiliations: Former Graduate Student, Department of Forestry, Ohio Agricultural Research and Development Center, Wooster, Ohio 44691

Publication date: March 1, 1981

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
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