Indices for Expressing Differences in Local Climates due to Forest Cover and Topographic Differences

Authors: Jackson, Marion T.; Newman, James E.

Source: Forest Science, Volume 13, Number 1, 1 March 1967 , pp. 60-71(12)

Publisher: Society of American Foresters

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Variations in local climates due to topographic, plant succession and seasonal changes were evaluated with respect to several climatic factors. Successional comparisons indicated that local climates are controlled primarily by size and density of vegetation and degree of canopy development. Topographic modification was strongly subject to seasonal factors such as degree of canopy closure and solar angle. Variations among forested gorge stations were as great as those observed between forested and non-forested areas. Relative differences among local climates were compared by local climatic polygons which were based upon several climatic parameters. An Index of Environmental Differences was derived for six local climates from the areas included within the polygons. These index values permit direct relative comparison of contrasting local climates during changing seasons. They also facilitate quantitative evaluation of the degree of local climatic change.

Document Type: Journal Article

Affiliations: Associate Professor, Dept. of Agronomy, Purdue Univ., Lafayette

Publication date: March 1, 1967

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  • 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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