Season-dependent fine root production at a deciduous Quercus serrata plantation in Japan

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Tran Van Do

Abstract

The production of fine roots (diameter ≤2 mm) contributes considerably to carbon cycling in forest ecosystems. Fine roots constitute a significant organic matter pool with high net primary productivity and turnover. In this study, fine root decomposition, mortality, and production were estimated at a Quercus serrata Murr. plantation in Japan by using rates of diameter-dependent root mortality, decomposition, and the thickening method employed. Sequential soil core and litter bag techniques were used to collect field data. The experiments were set up in a 20×20 m plot. The data were collected five times (May, August, November, and December 2013, as well as April 2014) during a one-year period, and fine roots were classified into ones with a diameter of ≤1 mm and others of 1-2 mm. The results indicate that fine root decomposition, mortality, and production in a Q. serrata plantation are season-dependent and are higher in the summer compared to the winter. In the summer, production reached 1.365 g m-2 day-1, while it was lower than 0.132 g m-2 day-1 in the winter. The total fine root production of the Q. serrata plantation was 1.364 tonnes ha-1 year-1. The mortality was 0.440 tonne ha-1 year-1, and the amount decomposed to return nutrients to the soil was 0.108 tonne ha-1 year-1.

 

DOI: https://doi.org/10.31276/VJSTE.61(4).48-52

Article Details

How to Cite
DO, Tran Van. Season-dependent fine root production at a deciduous Quercus serrata plantation in Japan. Vietnam Journal of Science, Technology and Engineering, [S.l.], v. 61, n. 4, p. 48-52, dec. 2019. ISSN 2525-2461. Available at: <http://vietnamscience.vjst.vn/index.php/VJSTE/article/view/266>. Date accessed: 23 feb. 2020.
Section
LIFE SCIENCES