Organic carbon accumulation processes on a forest floor during an early humification stage in a temperate deciduous forest in Japan: Evaluations of chemical compositional changes by 13C NMR and their decomposition rates from litterbag experiment

Ono, Kaori; Hirai, Keizo; Morita, Shinzo; Ohse, Kenji; Hiradate, Syuntaro

doi:10.1016/j.geoderma.2009.05.001

Cited by 41 publications

(40 citation statements)

References 28 publications

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“…Furthermore, differences of mass loss rates of litter components can directly affect the humification degree and the chemical quality of SOM. To understand the chemical processes of SOM accumulation, Ono et al (2009) conducted a litterbag experiment on a forest floor in a typical natural hardwood (Fagus crenata and Quercus crispula) forest in Japan and analyzed their humification processes by applying the solid-state 13 C CPMAS NMR technique. This study was a first report that enabled to quantitatively simulate carbon accumulation process on the floor of hardwood forest based on Olson's k values (Olson 1963) of various carbons obtained by field experiment.…”

Section: Introductionmentioning

confidence: 99%

“…These species are the most prevalent conifers and have been widely planted in Japan for timber products. We applied the same methods as described in Ono et al (2009) and clarified humification processes on both coniferous forest floors. Then, we compared the data of coniferous forests obtained in the present study with the published data of a hardwood forest (Ono et al 2009).…”

Section: Introductionmentioning

confidence: 99%

“…We applied the same methods as described in Ono et al (2009) and clarified humification processes on both coniferous forest floors. Then, we compared the data of coniferous forests obtained in the present study with the published data of a hardwood forest (Ono et al 2009). This approach allowed us to understand the changes in the organic carbon composition and masses of coniferous litters during early humification, to evaluate the chemical quality of SOM in coniferous forest floors, and to differentiate the SOM accumulation processes in soils between coniferous and hardwood forests.…”

Section: Introductionmentioning

confidence: 99%

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Humification processes of needle litters on forest floors in Japanese cedar (Cryptomeria japonica) and Hinoki cypress (Chamaecyparis obtusa) plantations in Japan

et al. 2010

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We quantitatively clarified the early humification processes on Japanese cedar and Hinoki cypress forest floors by using a litterbag experiment and the solid-state 13 C CPMAS NMR technique. There was no significant effect on litter mass loss during early humification between both coniferous litters regardless of the shape of their needles. Carbon composition in both litters showed similar trends during early humification. A/O-A as a humification index was low, around 0.6, in both litters throughout the experiment period although 60% of litter mass was lost. Coniferous litter incubated for 3 years might not be well-humified and would be susceptible to physical fragmentation. Carbon mass loss rates in conifers were in the following order: O-alkyl > aliphatic > aromatic > carbonyl carbons, differing with hardwoods. Conifers had concomitantly higher and lower mass loss rates of aliphatic and aromatic carbons than hardwoods. Soil organic carbon (SOC) accumulated in topsoil for conifers had relatively high and low contents of aliphatic and aromatic carbons than that for hardwood. These compositional differences of SOC among forests could be caused by the high and low supply rates of aliphatic and aromatic carbons from litter to topsoil. Consequently, initial litter nature and humification processes can affect the compositional qualities of SOC accumulated in soil.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Humification processes of needle litters on forest floors in Japanese cedar (Cryptomeria japonica) and Hinoki cypress (Chamaecyparis obtusa) plantations in Japan

et al. 2010

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“…Biomass production data, expressed as dry matter, were estimated as described in Soto et al (2016). The carbon content of plant residues and external inputs were taken from Carranca et al (2009), Boiffin et al (1986, Rahn and Lillywhite (2002), Bilandzija et al (2012), and Ono et al (2009). Humification coefficients of herbaceous crop residues (average 12.5% for cereals and 8% for legumes) were based on a metaanalysis of carbon sequestration in Mediterranean soils (Aguilera et al 2013) and other sources (Boiffin et al 1986, Kätterer et al 2011).…”

Section: Functioning Of the Agroecosystemmentioning

confidence: 99%

The agrarian metabolism as a tool for assessing agrarian sustainability, and its application to Spanish agriculture (1960-2008)

Guzmán¹,

Aguilera²,

García‐Ruiz³

et al. 2018

E&S

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-Fernández, J. Infante-Amate, and M. González de Molina. 2018. The agrarian metabolism as a tool for assessing agrarian sustainability, and its application to Spanish agriculture ABSTRACT. Agrarian metabolism applies the social metabolism framework to agriculture. It focuses on the study of the exchange of material and energy flows between a society and its environment for producing useful biomass. These flows must maintain the fund elements of the agroecosystem in sufficient quantity and of sufficient quality for them to continue providing ecosystem services. This methodology was applied to Spanish agriculture between 1960 and 2008, a period characterized by a deep process of intensification based on external inputs (EIs). We specifically focused on nitrogen (N), phosphorus (P), potassium (K), carbon (C), and energy flows, and on the three fund elements that they sustain such as soil, biodiversity, and woodland. The results show that the growing incorporation of EIs has broken the equilibrium between land and biomass uses required by traditional farming, lowering the density of internal energy loops. On cropland, the relative fall in unharvested biomass had a negative effect on both biodiversity and the soil, which reduced the replenishment of organic C between 1960 and 1990. The sharp increase in internal and external flows of biomass for animal feed hardly contributed to increasing soil organic carbon (SOC) between 1990 and 2008 because of the fact that these flows had increasingly lower C:N ratios. The massive importation of N in feed and mineral fertilizers (553 and 1150 Gg in 2000, respectively) increased the surplus and the losses of N, which in turn could have a negative impact on biodiversity, water, and the atmosphere. The scenario constructed without imported animal feed would allow a reduction in the environmental impacts related to the excess of N, with hardly any negative effect on SOC replenishment, and improving energy return rates in the form of total, unharvested, and accumulated phytomass.

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“…The degree of aromaticity, which is the most common parameter to assess the degree of humification (Gonzales-Perez et al 2008), is reported in most of the works that evaluated the chemical structure of HA based on the 13 C NMR spectroscopy (Malcolm1990; Schnitzer et al 2006;Figure 1. 13 C NMR spectra of alginate HA A Figure 2. 13 C NMR spectra of alginate HA B Ono et al 2009). The higher values of α are characterised for more stable structure of HA.…”

Section: Comparison Of Chemical Structure Of Alginite Ha Isolated Witmentioning

confidence: 99%

Comparison of Chemical Structure of Alginite Humic Acids Isolated with Two Different Procedures with Soil Humic Acids

Barančíková¹,

Litavec²

2016

Agriculture (Polnohospodárstvo)

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The different origin of alginite and soil organic matter may be the reason of differences in their humic acids (HA) chemical structure. One of the aims of this article is to compare the chemical composition of alginite HA and HA isolated from different soil types. Another aim of this article is to compare the chemical structure of humic acids of alginite isolated with two different procedures: modified IHSS (International Humic Substances Society) method and simplified extraction method. The modified IHSS method was applied for the isolation of alginite and soil HA. To obtain sufficient amount of alginate HA for biological experiments, simplified extraction method suited for large volumes of HA was applied. The differences in elemental analysis and ash proportion in HA extracted by modified IHSS method (C = 35.4, H = 43 atomic%, ash content = 0.08%) and simplified extraction method (C = 31, H = 31 atomic%, ash content = 7.42%) can be caused by different concentration of extraction solution and also differences in purification of HA. The differences in chemical structure between alginate HA and HA isolated from different soil types according to the data of elemental analysis (C content of alginite HA = 35.4 atomic%, C content in soils HA = 38.2‒49.1 atomic%) and 13C nuclear magnetic resonance (NMR) spectra (degree of aromaticity of alginite HA = 24.4% and soil HA= 35.9‒53%) were found. Results of 13C NMR show that the content of aromatic carbon was decreasing in the following order: Haplic Chernozem HA > Andic Cambisol HA > Haplic Cambisol HA > alginite HA. Based on the obtained results, it can be concluded that the differences in the chemical structure of alginite and soil HA can be explained by the difference in the origin of organic matter in alginite and soil samples. The source of organic matter in alginite is mainly type II kerogen from algae and that of soil is lignin and cellulose (type III kerogen) of higher plants.

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Organic carbon accumulation processes on a forest floor during an early humification stage in a temperate deciduous forest in Japan: Evaluations of chemical compositional changes by 13C NMR and their decomposition rates from litterbag experiment

Cited by 41 publications

References 28 publications

Humification processes of needle litters on forest floors in Japanese cedar (Cryptomeria japonica) and Hinoki cypress (Chamaecyparis obtusa) plantations in Japan

Humification processes of needle litters on forest floors in Japanese cedar (Cryptomeria japonica) and Hinoki cypress (Chamaecyparis obtusa) plantations in Japan

The agrarian metabolism as a tool for assessing agrarian sustainability, and its application to Spanish agriculture (1960-2008)

Comparison of Chemical Structure of Alginite Humic Acids Isolated with Two Different Procedures with Soil Humic Acids

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