Diameter-density relationships provide tentative spacing guidelines for Eucalyptus saligna in Hawaii

Dean S. DeBell; Craig D. Whitesell

doi:10.2737/PSW-RN-397

Treesearch

Diameter-density relationships provide tentative spacing guidelines for Eucalyptus saligna in Hawaii

Informally Refereed

Authors:

Dean S. DeBell, Craig D. Whitesell

Year:

1988

Type:

Research Note

Station:

Pacific Southwest Research Station

DOI:

https://doi.org/10.2737/PSW-RN-397

Source:

Res. Note PSW-RN-397. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 3 p

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Abstract

Trials have been established in Hawaii to develop spacing guidelines for Eucalyptus saligna plantations. Substantial competition-related mortality occurred in densely planted plots of three spacing trials. Data on stand diameter and surviving number of trees on these plots were plotted in logarithmic form to estimate a "self-thinning" or maximum diameter-stand density line. An "operating" maximum line was defined-one representing 70 percent of the total number of trees that could reach any given mean diameter if the stand were allowed to reach the "self-thinning" level. This information provides a guide to the number of E. saligna trees to plant per hectare for selected target diameters at harvest.

Keywords

Eucalyptus saligna, diameter-density relationships

Citation

DeBell, Dean S.; Whitesell, Craig D. 1988. Diameter-density relationships provide tentative spacing guidelines for Eucalyptus saligna in Hawaii. Res. Note PSW-RN-397. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 3 p.