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Crown structure and partitioning of aboveground biomass before the competition phase in a mixed stand of normal-crowned Norway spruce (Picea abies (L.) Karst.) and pendulous Norway spruce (Picea abies f. pendula (Lawson) Sylven)


Crown structure and partitioning of aboveground biomass before the competition phase in a mixed stand of normal-crowned Norway spruce (Picea abies (L.) Karst.) and pendulous Norway spruce (Picea abies f. pendula (Lawson) Sylven)



Tree Physiology 8(4): 361-370



ISSN/ISBN: 0829-318X

DOI: 10.1093/treephys/8.4.361

Crown characteristics, in particular the distribution of needle and branch-wood biomass, of 20 pendulous Norway spruce (Picea abies f. pendula (Lawson) Sylven) trees with a heritable narrow crown form and 15 normal-crowned (Picea abies (L.) Karst.) trees were studied in a 19-year-old stand. The form of the crown is conical in normal-crowned trees and columnar and narrow in pendulous trees. The columnar form results from the production of thin and hanging branches. The partitioning of aboveground biomass to stems was significantly higher in pendulous (0.37) than in normal-crowned trees (0.29). Needle biomass in pendulous trees was distributed higher in the crown than in normal-crowned trees. Pendulous trees had a higher needle biomass/branch-wood biomass ratio than normal-crowned trees.

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Accession: 002062270

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Related references

Grown structure and partitioning of aboveground biomass before the competition phase in a mixed stand of normal-crowned Norway spruce (Picea abies (L.) Karst.) and pendulous Norway spruce (Picea abies f. pendula (dawson) Sylven). Tree Physiol 8(4): 361-370, 1991

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