Cargando…
Soil organic carbon dynamics under long-term fertilization in a black soil of China: Evidence from stable C isotopes
Effects of different fertilizers on organic carbon (C) storage and turnover of soil fractions remains unclear. We combined soil fractionation with isotope analyses to examine soil organic carbon (SOC) dynamics after 25 years of fertilization. Five types of soil samples including the initial level (C...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4761894/ https://www.ncbi.nlm.nih.gov/pubmed/26898121 http://dx.doi.org/10.1038/srep21488 |
_version_ | 1782417023515492352 |
---|---|
author | Dou, Xiaolin He, Ping Zhu, Ping Zhou, Wei |
author_facet | Dou, Xiaolin He, Ping Zhu, Ping Zhou, Wei |
author_sort | Dou, Xiaolin |
collection | PubMed |
description | Effects of different fertilizers on organic carbon (C) storage and turnover of soil fractions remains unclear. We combined soil fractionation with isotope analyses to examine soil organic carbon (SOC) dynamics after 25 years of fertilization. Five types of soil samples including the initial level (CK) and four fertilization treatments (inorganic nitrogen fertilizer, N; balanced inorganic fertilizer, NPK; inorganic fertilizer plus farmyard manure, MNPK; inorganic fertilizer plus corn straw residue, SNPK) were separated into four aggregate sizes (>2000 μm, 2000–250 μm, 250–53 μm, and <53 μm), and three density fractions: free light fraction (LF), intra-aggregate particulate organic matter (iPOM), and mineral-associated organic matter (mSOM). Physical fractionation showed the iPOM fraction of aggregates dominated C storage, averaging 76.87% of SOC storage. Overall, application of N and NPK fertilizers cannot significantly increase the SOC storage but enhanced C in mSOM of aggregates, whereas MNPK fertilizer resulted in the greatest amount of SOC storage (about 5221.5 g C m(2)) because of the enhanced SOC in LF, iPOM and mSOM of each aggregate. The SNPK fertilizer increased SOC storage in >250 μm aggregates but reduced SOC storage in <250 μm aggregates due to SOC changes in LF and iPOM. |
format | Online Article Text |
id | pubmed-4761894 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-47618942016-02-29 Soil organic carbon dynamics under long-term fertilization in a black soil of China: Evidence from stable C isotopes Dou, Xiaolin He, Ping Zhu, Ping Zhou, Wei Sci Rep Article Effects of different fertilizers on organic carbon (C) storage and turnover of soil fractions remains unclear. We combined soil fractionation with isotope analyses to examine soil organic carbon (SOC) dynamics after 25 years of fertilization. Five types of soil samples including the initial level (CK) and four fertilization treatments (inorganic nitrogen fertilizer, N; balanced inorganic fertilizer, NPK; inorganic fertilizer plus farmyard manure, MNPK; inorganic fertilizer plus corn straw residue, SNPK) were separated into four aggregate sizes (>2000 μm, 2000–250 μm, 250–53 μm, and <53 μm), and three density fractions: free light fraction (LF), intra-aggregate particulate organic matter (iPOM), and mineral-associated organic matter (mSOM). Physical fractionation showed the iPOM fraction of aggregates dominated C storage, averaging 76.87% of SOC storage. Overall, application of N and NPK fertilizers cannot significantly increase the SOC storage but enhanced C in mSOM of aggregates, whereas MNPK fertilizer resulted in the greatest amount of SOC storage (about 5221.5 g C m(2)) because of the enhanced SOC in LF, iPOM and mSOM of each aggregate. The SNPK fertilizer increased SOC storage in >250 μm aggregates but reduced SOC storage in <250 μm aggregates due to SOC changes in LF and iPOM. Nature Publishing Group 2016-02-22 /pmc/articles/PMC4761894/ /pubmed/26898121 http://dx.doi.org/10.1038/srep21488 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Dou, Xiaolin He, Ping Zhu, Ping Zhou, Wei Soil organic carbon dynamics under long-term fertilization in a black soil of China: Evidence from stable C isotopes |
title | Soil organic carbon dynamics under long-term fertilization in a black soil of China: Evidence from stable C isotopes |
title_full | Soil organic carbon dynamics under long-term fertilization in a black soil of China: Evidence from stable C isotopes |
title_fullStr | Soil organic carbon dynamics under long-term fertilization in a black soil of China: Evidence from stable C isotopes |
title_full_unstemmed | Soil organic carbon dynamics under long-term fertilization in a black soil of China: Evidence from stable C isotopes |
title_short | Soil organic carbon dynamics under long-term fertilization in a black soil of China: Evidence from stable C isotopes |
title_sort | soil organic carbon dynamics under long-term fertilization in a black soil of china: evidence from stable c isotopes |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4761894/ https://www.ncbi.nlm.nih.gov/pubmed/26898121 http://dx.doi.org/10.1038/srep21488 |
work_keys_str_mv | AT douxiaolin soilorganiccarbondynamicsunderlongtermfertilizationinablacksoilofchinaevidencefromstablecisotopes AT heping soilorganiccarbondynamicsunderlongtermfertilizationinablacksoilofchinaevidencefromstablecisotopes AT zhuping soilorganiccarbondynamicsunderlongtermfertilizationinablacksoilofchinaevidencefromstablecisotopes AT zhouwei soilorganiccarbondynamicsunderlongtermfertilizationinablacksoilofchinaevidencefromstablecisotopes |