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Land use types with different fertilization management affected isotope ratios of bulk and water-extractable C and N of soils in an intensive agricultural area

  • Soils, Sec 1 • Soil Organic Matter Dynamics and Nutrient Cycling • Research Article
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Abstract

Purpose

This study was conducted to investigate variations in the stable isotope ratios of carbon (δ13C) and nitrogen (δ15N) of agricultural soils under different land uses (i.e., paddy, upland, and orchard) that subjected to different fertilization management (i.e., 15 N-depleted synthetic fertilizer and 13C- and 15 N-enriched livestock manure and compost application).

Materials and methods

Soil samples were collected from paddy, upland, and orchard fields in an intensive agricultural area, and forest (pine and oak) soils were additionally included as background soils. The C and N concentrations and isotope ratios of both bulk and water-extractable soil fractions were analyzed.

Results and discussion

The δ13C and δ15N of agricultural soils were higher than those of forest soils, reflecting repeated manure and compost applications (for both δ13C and δ15N) and higher N loss (for δ15N) in agricultural soils. Among agricultural soils, orchard (− 24.2‰ for δ13C and + 10.6‰ for δ15N) and upland (− 25.4‰ and + 9.6‰, respectively) soils which received higher rates of manure and compost were more enriched with 13C and 15N compared with paddy (− 28.0‰ and + 4.9‰, respectively). Such differences in the isotopic compositions among agricultural soils were also found for water-extractable soil fractions.

Conclusions

Our study suggests that δ13C and δ15N of agricultural soils are affected by land use types with different fertilization management, particularly application of 13C- and 15 N-enriched livestock manure and compost. The δ13C and δ15N could be used as chemical indicators to evaluate the effects of the application of manure and compost on soil C and N dynamics.

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Data availability

All data are available from the supplementary information.

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Funding

This work was carried out with the support of the “Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ015010022020)”, Rural Development Administration, Republic of Korea. YJJ and BSS received scholarships from the BK21 project (Education and Research Unit for Climate-Smart Reclaimed-Tideland Agriculture) of the Ministry of Education, Republic of Korea.

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Authors and Affiliations

Authors

Contributions

YJJ: Investigation and Writing—Original draft. HJP: Investigation and Writing—Original draft. BJJ: Investigation and Data curation. BSS: Investigation and Data curation. NRB: Investigation and Data curation. HIY: Investigation and Writing—Reviewing and Editing. JHK: Investigation and Writing—Reviewing and Editing. SML: Resources and Writing—Reviewing and Editing. WJC: Conceptualization, Writing—Reviewing and Editing, and Supervision.

Corresponding author

Correspondence to Woo-Jung Choi.

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Conflict of interest

The authors declare no competing interests.

Financial interests

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Additional information

Responsible editor: Shahla Hosseini Bai

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Supplementary Information

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Supplementary file1 (DOCX 33 KB)

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Cite this article

Jeong, YJ., Park, HJ., Jeon, BJ. et al. Land use types with different fertilization management affected isotope ratios of bulk and water-extractable C and N of soils in an intensive agricultural area. J Soils Sediments 22, 429–442 (2022). https://doi.org/10.1007/s11368-021-03097-5

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  • DOI: https://doi.org/10.1007/s11368-021-03097-5

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