NDLI: Nitrogen use by Pinus densiflora trees growing on a Mt. Fuji lava flow

Content Provider	Springer Nature Link
Author	Tanabe, Hiromi Abe, Yoshiko Naka, Takashi
Copyright Year	2004
Abstract	To quantify the nitrogen (N) use by Pinus densiflora trees growing on an infertile lava surface, N pools, N requirement and N uptake through fine roots and N deposition from the atmosphere were estimated. The N requirement and the N uptake of fine roots were 55.5 kg N ha−1 year−1 and 39.7 kg N ha−1, respectively. Thus, the ratio of N uptake to N requirement of the fine roots was 71.5%. Including fine-root contribution, the total N requirement of the P. densiflora trees was 98.6 kg N ha−1 year−1, and the total N uptake was 64.2 kg N ha−1 year−1. Thus, the N uptake of the P. densiflora trees was 64.1% of the N requirement, indicating that P. densiflora trees growing on an infertile lava surface obtain some of their N from below-ground organic material layers every year and the contribution of N storage in trees for their growth is not any higher than indicated in previous reports that excluded fine-roots contribution. The wet N deposition of our research forest was only 5.8% of the N requirement of the P. densiflora trees and only 8.9% of the N uptake. Movement of the below-ground organic material layer N concentrations in the F- and L-layers coincides with needle development and fine-root growth, suggesting the possibility that P. densiflora trees extract N from the organic N of those layers for growth.
Starting Page	249
Ending Page	254
Page Count	6
File Format	PDF
ISSN	13416979
Journal	Journal of Forest Research
Volume Number	9
Issue Number	3
e-ISSN	16107403
Language	English
Publisher	Springer-Verlag
Publisher Date	2004-08-01
Publisher Place	Tokyo
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Japanese red pine New geological substrate N requirement N uptake N deposition Forestry Forestry Management Tree Biology Plant Sciences Plant Ecology
Content Type	Text
Resource Type	Article
Subject	Forestry

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