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Site classification of ponderosa pine stands under stocking control in California

Author: Robert F Powers; William W Oliver; Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)
Publisher: [Berkeley, Calif.] : Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1978.
Series: USDA Forest Service research paper PSW, 128.
Edition/Format:   Print book : National government publication : EnglishView all editions and formats
Summary:
Existing systems for estimating site index of ponderosa pine (Pinus ponderosa Laws.) do not apply well to California stands where stocking is controlled. A more suitable system has been developed using trends in natural height growth, derived from stem analyses of dominant trees in California. This site index system produces polymorphic patterns of height development to 80 years of age. Using a second system, site  Read more...
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Additional Physical Format: Online version:
Powers, Robert F. (Robert Field).
Site classification of ponderosa pine stands under stocking control in California.
[Berkeley, Calif.] : Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1978
(OCoLC)623362495
Material Type: Government publication, National government publication, Internet resource
Document Type: Book, Internet Resource
All Authors / Contributors: Robert F Powers; William W Oliver; Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)
OCLC Number: 4364151
Description: 9 pages : illustrations, 1 map ; 27 cm.
Series Title: USDA Forest Service research paper PSW, 128.
Responsibility: Robert F. Powers, William W. Oliver.

Abstract:

Existing systems for estimating site index of ponderosa pine (Pinus ponderosa Laws.) do not apply well to California stands where stocking is controlled. A more suitable system has been developed using trends in natural height growth, derived from stem analyses of dominant trees in California. This site index system produces polymorphic patterns of height development to 80 years of age. Using a second system, site index can be predicted in stands where dominants have reached a breast-height age of at least 4 years but have not attained a height of 20 feet. Accuracy of estimates by this method can be strongly influenced by soil type. Accordingly, a separate equation is presented for stands on soils formed from skeletal schists. Yield tables based on the first system will be issued separately.

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