JOPSS - Search Results

Journal Articles

Sequential loss-on-ignition as a simple method for evaluating the stability of soil organic matter under actual environmental conditions

Sato, Yuhi*; Ishizuka, Shigehiro*; Hiradate, Shuntaro*; Atarashi-Andoh, Mariko; Nagano, Hirohiko*; Koarashi, Jun

Environmental Research, 239(Part 1), p.117224_1 - 117224_9, 2023/12

https://doi.org/10.1016/j.envres.2023.117224

Times Cited Count：0 Percentile：0(Environmental Sciences)

The stability of soil organic matter (SOM) is important for improving our understanding of the global carbon cycle and ongoing climate change. This study examined the applicability of loss-on-ignition of soil with a stepwise increase in temperature (SIT-LOI) to evaluate the stability of the SOM using soil samples from Japan having different organic matter (OM) and mineral contents and different mean residence times (MRTs), estimated from radiocarbon analysis, for SOM. As the result of this examination, SIT-LOI data was strongly correlated with MRTs. This clearly suggests that SIT-LOI can be an indicator evaluating the stability of SOM in actual environments.

Journal Articles

Formation and mobility of soil organic carbon in a buried humic horizon of a volcanic ash soil

Wijesinghe, J. N.*; Koarashi, Jun; Atarashi-Andoh, Mariko; Kokubu, Yoko; Yamaguchi, Noriko*; Sase, Takashi*; Hosono, Mamoru*; Inoue, Yuzuru*; Mori, Yuki*; Hiradate, Shuntaro*

Geoderma, 374, p.114417_1 - 114417_10, 2020/09

https://doi.org/10.1016/j.geoderma.2020.114417

Times Cited Count：10 Percentile：49.8(Soil Science)

Oral presentation

Physicochemical and isotopic characteristics of charred plant fragments in Japanese soils

Nishimura, Shusaku; Hiradate, Shuntaro*; Atarashi-Andoh, Mariko; Koarashi, Jun

no journal, ,

no abstracts in English

Oral presentation

Quantitative understanding of the heterogeneity of soil organic carbon degradability for predicting long-term response of soil carbon to warming

Koarashi, Jun; Atarashi-Andoh, Mariko; Ishizuka, Shigehiro*; Hiradate, Shuntaro*; Kokubu, Yoko

no journal, ,

Microbial decomposition of soil organic carbon (SOC) is an important component of the global carbon (C) cycle, and even a small warming-driven change in the size and decomposition rate of SOC pools could significantly impact the atmospheric CO $_{2}$ concentration and thus the global C cycle. A quantitative understanding of heterogeneity of SOC degradability is essential for a reliable prediction of the response of soils to warming. While fast-cycling SOC pools dominate C fluxes from soils, the longer-term response of soils to warming will be largely determined by the sizes and turnover times of slow-cycling SOC pools in the soils, which can hardly be identified by conventional analytical and incubation methods. We attempted to characterize SOC pools with respect to their sizes and specific turnover times in Japanese forest soils, by a combinatorial use of SOC fractionation and $^{14}$ C analysis. We represent the soils as a mixture of SOC pools with different turnover times ranging from years to more than a millennium, and on the basis of this representation and simple model calculations, we show the potential importance of slow-cycling SOC pools with turnover times of several decades to 200 years for the prediction of positive feedback to climate change over the next century.

Oral presentation

What kind of effect does warming have on soil organic carbon?

Koarashi, Jun; Atarashi-Andoh, Mariko; Takagi, Kentaro*; Kondo, Toshiaki*; Teramoto, Munemasa*; Nagano, Hirohiko; Kokubu, Yoko; Takagi, Masahiro*; Ishida, Sachinobu*; Hiradate, Shuntaro*; et al.

no journal, ,

no abstracts in English

Oral presentation

Transition of soil organic carbon in a volcanic ash soil derived from Towada volcano, Japan

Wijesinghe, J.*; Koarashi, Jun; Atarashi-Andoh, Mariko; Kokubu, Yoko; Yamaguchi, Noriko*; Sase, Takashi*; Hosono, Mamoru*; Inoue, Yuzuru*; Mori, Yuki*; Hiradate, Shuntaro*

no journal, ,

Oral presentation

Source of nitrogen acquired by plants grown on Nakoudojima Island, Ogasawara, Japan, estimated from $^{15}$ N value

Hiradate, Shuntaro*; Miyakuni, Ryo*; Sato, Nozomu*; Atarashi-Andoh, Mariko; Koarashi, Jun; Kachi, Naoki*

no journal, ,

no abstracts in English

Oral presentation

Warming effects on the quantity and quality of organic carbon in Japanese forest surface soils

Koarashi, Jun; Atarashi-Andoh, Mariko; Takagi, Kentaro*; Kondo, Toshiaki*; Teramoto, Munemasa*; Nagano, Hirohiko; Kokubu, Yoko; Takagi, Masahiro*; Ishida, Sachinobu*; Hiradate, Shuntaro*; et al.

no journal, ,

It is possible that global warming will promote the decomposition of soil organic carbon (SOC) and cause further global warming. In this study, the quantity and quality of SOC (carbon and nitrogen content, stable and radioactive carbon isotope composition, etc.) were investigated in warming and control plots at five forest sites in Japan, where long-term soil warming experiments have been conducted. Results show no remarkable difference in the quantity and quality of SOC stored in surface (0-20 cm) soils between the warming and control plots, suggesting the warming-induced increase in the soil respiration will continue over the next decade, probably due to the abundant SOC storage in Japanese forest surface soils.

Oral presentation

Nagano, Hirohiko*; Atarashi-Andoh, Mariko; Tanaka, Sota*; Hiradate, Shuntaro*; Fujii, Kazumichi*; Koarashi, Jun

no journal, ,

Oral presentation

Yamakita, Eri*; Xinping, D.*; Wijesinghe, J. N.*; Koarashi, Jun; Atarashi-Andoh, Mariko; Ishizuka, Shigehiro*; Senda, Ryoko*; Mori, Yuki*; Hiradate, Shuntaro*

no journal, ,

no abstracts in English

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Sequential loss-on-ignition as a simple method for evaluating the stability of soil organic matter under actual environmental conditions

Formation and mobility of soil organic carbon in a buried humic horizon of a volcanic ash soil

Physicochemical and isotopic characteristics of charred plant fragments in Japanese soils

Quantitative understanding of the heterogeneity of soil organic carbon degradability for predicting long-term response of soil carbon to warming

What kind of effect does warming have on soil organic carbon?

Transition of soil organic carbon in a volcanic ash soil derived from Towada volcano, Japan

Source of nitrogen acquired by plants grown on Nakoudojima Island, Ogasawara, Japan, estimated from $^{15}$ N value

Warming effects on the quantity and quality of organic carbon in Japanese forest surface soils

The Rate of vertical translocation of soil organic carbon fractions stored in buried humic horizon from an Andosol

Stocks and dynamics of organic carbon in Japanese forest surface soils and their response to long-term experimental warming

Estimation of carbon accumulation rate in a volcanic ash soil in Aomori

Rewetting dried soils for elucidating SOM dynamics in andic soils of a Japanese temperate forest

Moderately elevated nitrogen deposition altering soil carbon dynamics

Effects of water fluctuation on soil carbon dioxide release; An Evaluation with incubation experiments of ten soils from six Japanese broadleaved forests

Increased soil CO $_{2}$ release by increased moisture fluctuation; Slowdowns in high temperature

Increased soil CO $_{2}$ release by increased moisture fluctuation; Exploring of controlling factors

Soil carbon dynamics revealed by radiocarbon

Water extractable organic matter from air-dry soil to predict soil carbon dynamics

Increased soil CO $_{2}$ release by increased moisture fluctuation; Volcanic ash soils and non-volcanic ash soils

Metabolism analysis of organic matter fractions in a Black soil and a Brown forest soil by using $^{15}$ N