2016年4月
A New Model for Size-Dependent Tree Growth in Forests
PLOS ONE
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- 巻
- 11
- 号
- 4
- 開始ページ
- e0152219
- 終了ページ
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1371/journal.pone.0152219
- 出版者・発行元
- PUBLIC LIBRARY SCIENCE
Tree growth, especially diameter growth of tree stems, is an important issue for understanding the productivity and dynamics of forest stands. Metabolic scaling theory predicted that the 2/3 power of stem diameter at a certain time is a linear function of the 2/3 power of the initial diameter and that the diameter growth rate scales to the 1/3 power of the initial diameter. We tested these predictions of the metabolic scaling theory for 11 Japanese secondary forests at various growth stages. The predictions were not supported by the data, especially in younger stands. Alternatively, we proposed a new theoretical model for stem diameter growth on the basis of six assumptions. All these assumptions were supported by the data. The model produced a nearly linear to curvilinear relationship between the 2/3 power of stem diameters at two different times. It also fitted well to the curvilinear relationship between diameter growth rate and the initial diameter. Our model fitted better than the metabolic scaling theory, suggesting the importance of asymmetric competition among trees, which has not been incorporated in the metabolic scaling theory.
- リンク情報
- ID情報
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- DOI : 10.1371/journal.pone.0152219
- ISSN : 1932-6203
- PubMed ID : 27035709
- Web of Science ID : WOS:000373201200012