Stand dynamics and biomass increment in a lucidophyllous forest over a 28-year period In central Japan

Siyu Chen, Akira Komiyama, Shogo Kato, Ruoming Cao, Shinpei Yoshitake, Toshiyuki Ohtsuka*

*この研究の対応する著者

研究成果: Article査読

6 被引用数 (Scopus)

抄録

Secondary lucidophyllous forest is one of the dominant forests in human-dominated subtropical/warm-temperate regions in East Asia. There were few direct monitoring techniques to elucidate the following hypotheses: (a) self-thinning may govern the stand development process and (b) wood production decline can be observed during secondary succession in a lucidophyllous forest. We conducted a long-term study at a permanent plot in central Japan, since 1989. The forest consists mainly of Castanopsis cuspidata in a canopy layer, Cleyera japonica, and Eurya japonica in a subtree layer. During the 28-year period, the basal area of the stand significantly increased due to the growth of C. cuspidata, from 29.18 ± 1.84 (87.8% of total) to 38.71 ± 2.22 m2s ha-1 (91.9%), while the stem density of C. cuspidata significantly decreased from 666 ± 13 to 404 ± 10 stems ha-1 in proportion to accumulating biomass (117.8 to 166.6 ton ha-1). The annual woody net primary production ranged from 2.40 ± 0.13 to 3.93 ± 0.33 ton ha-1 year-1 as a nearly 70-year-old forest. There was no age-related decline of woody net primary production (NPP) was found during secondary succession, and the growth of individual tree still increased when the self-thinning process governed the stand.

本文言語English
論文番号397
ジャーナルForests
8
10
DOI
出版ステータスPublished - 2017 10 17
外部発表はい

ASJC Scopus subject areas

  • 林業

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