Spectral features of humic substances in a perhumid subtropical montane forest ecosystem, Taiwan

Chen, Jenn‐Shing; Chiu, Chih‐Yu; Nagatsuka, Shizuo

doi:10.1080/00380768.2001.10408380

Cited by 3 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The influence of litter input on changes in remnant masses of each carbon during the early humification processes showed that mass loss rate of aromatic C in humified litter is higher in cypress than cedar (Ono et al 20092011). Our previous studies showed that humification degree of HAs, determined by E4/E6 ratio (Chen et al 2001a, b) and by 13 C NMR (Chung et al 2012) differed little by topographic position of the study site.…”

Section: Discussionmentioning

confidence: 93%

Characterization of soil organic matter in perhumid natural cypress forest: comparison of humification in different particle-size fractions

Chen¹,

Chung

Tian

et al. 2013

Bot Stud

Self Cite

View full text Add to dashboard Cite

BackgroundThe Chamaecyparis forest is a valuable natural resource in eastern Asia. The characteristics of soil humic substances and the influence of environmental factors in natural Chamaecyparis forests in subtropical mountain regions are poorly understood. The study site of a perhumid Chamaecyparis forest is in the Yuanyang Lake Preserved Area in northcentral Taiwan. We collected samples from organic horizons (Oi, Oe and Oa) and from the surface horizon (O/A horizon) at the summit, footslope and lakeshore to characterize the composition of the soil organic matter. Samples of organic horizons were dried and ground, and those of the O/A horizon were passed through wet sieving for different particle-size fractions before analysis. The C chemical structure in the samples was determined with CP/MAS 13C NMR spectra.ResultsThe ratios of alkyl-C/O-alkyl-C and aromaticity increased with decomposition of litter from the Oi, Oe, to Oa horizon. The ratio of alkyl-C/O-alkyl-C also increased from coarse (> 250 μm) to very fine (< 2 μm) particle fractions, which indicates increased humification of soil organic matter (SOM) in the fine-sized fractions. However, aromaticity tended to decrease with decreasing particle size, so it may not be useful in evaluating SOM humification of different particle-size fractions.ConclusionsThe humification degree of the samples from O horizons and different particle-size fractions of the O/A horizon showed no gradient change with change in topography. This prevalent slow decomposition of organic matter in these perhumid climate conditions may narrow the difference in humification from the summit to lakeshore.Electronic supplementary materialThe online version of this article (doi:10.1186/1999-3110-54-56) contains supplementary material, which is available to authorized users.

show abstract

Section: Discussionmentioning

confidence: 93%

Characterization of soil organic matter in perhumid natural cypress forest: comparison of humification in different particle-size fractions

Chen¹,

Chung

Tian

et al. 2013

Bot Stud

Self Cite

View full text Add to dashboard Cite

show abstract

“…The degree of soil humification tends to increase with decreasing elevation [29], however at our study sites, this correlation does not fit. Previous studies have shown that the degree of humification in mountain soils is not significantly influenced by elevation [91] [92]. The high elevation and flat landform of TSO1 increased the exposure of soil to sunlight.…”

Section: The Humic Substances Of Soil At High Mountain and Mountain S...mentioning

confidence: 96%

Morphological Feature and Physicochemical Characteristics of Soils under <i>Festuca</i> spp. Dominant Steppe at High Mountain and Mountain of Khuvsgul, Mongolia

Narangerel¹,

Jamsran²,

Asano³

et al. 2022

OJSS

View full text Add to dashboard Cite

show abstract

¹³C-NMR spectroscopy studies of humic substances in subtropical perhumid montane forest soil

Chung

Chen²,

Chiu

et al. 2012

Journal of Forest Research

View full text Add to dashboard Cite

Spectral features of humic substances in a perhumid subtropical montane forest ecosystem, Taiwan

Cited by 3 publications

References 13 publications

Characterization of soil organic matter in perhumid natural cypress forest: comparison of humification in different particle-size fractions

Characterization of soil organic matter in perhumid natural cypress forest: comparison of humification in different particle-size fractions

Morphological Feature and Physicochemical Characteristics of Soils under <i>Festuca</i> spp. Dominant Steppe at High Mountain and Mountain of Khuvsgul, Mongolia

¹³C-NMR spectroscopy studies of humic substances in subtropical perhumid montane forest soil

Contact Info

Product

Resources

About

Spectral features of humic substances in a perhumid subtropical montane forest ecosystem, Taiwan

Cited by 3 publications

References 13 publications

Characterization of soil organic matter in perhumid natural cypress forest: comparison of humification in different particle-size fractions

Characterization of soil organic matter in perhumid natural cypress forest: comparison of humification in different particle-size fractions

Morphological Feature and Physicochemical Characteristics of Soils under &lt;i&gt;Festuca&lt;/i&gt; spp. Dominant Steppe at High Mountain and Mountain of Khuvsgul, Mongolia

13C-NMR spectroscopy studies of humic substances in subtropical perhumid montane forest soil

Contact Info

Product

Resources

About

Morphological Feature and Physicochemical Characteristics of Soils under <i>Festuca</i> spp. Dominant Steppe at High Mountain and Mountain of Khuvsgul, Mongolia

¹³C-NMR spectroscopy studies of humic substances in subtropical perhumid montane forest soil