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, Shimpei Yoshitake, Toshiyuki Ohtsuka

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number397
JournalForests
Volume8
Issue number10
DOIs
Publication statusPublished - 2017 Oct 17
Externally publishedYes

Keywords

  • Castanopsis cuspidata
  • Forest development
  • Long-term study
  • Self-thinning
  • Woody NPP

ASJC Scopus subject areas

  • Forestry

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