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Forests 2017, 8(10), 397; https://doi.org/10.3390/f8100397

Stand Dynamics and Biomass Increment in a Lucidophyllous Forest over a 28-Year Period in Central Japan

1
United Graduate School of Agricultural Science, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
2
River Basin Research Center, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
3
Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
4
Takayama Experimental Field Station, River Basin Research Center, Gifu University, 919-47 Takayama, Gifu 506-0815, Japan
*
Author to whom correspondence should be addressed.
Received: 18 August 2017 / Revised: 12 October 2017 / Accepted: 15 October 2017 / Published: 17 October 2017
(This article belongs to the Collection Forests Carbon Fluxes and Sequestration)
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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 m2 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. View Full-Text
Keywords: Castanopsis cuspidata; woody NPP; self-thinning; forest development; long-term study Castanopsis cuspidata; woody NPP; self-thinning; forest development; long-term study
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Chen, S.; Komiyama, A.; Kato, S.; Cao, R.; Yoshitake, S.; Ohtsuka, T. Stand Dynamics and Biomass Increment in a Lucidophyllous Forest over a 28-Year Period in Central Japan. Forests 2017, 8, 397.

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