Soil organic carbon fractions comparison after 40-year long-term fertilisation in a wheat-corn rotation field
| Title: | Soil organic carbon fractions comparison after 40-year long-term fertilisation in a wheat-corn rotation field |
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| Authors: | Xiaolu Sun, Jingtao Liu, Shutang Liu, Wenlong Gao |
| Source: | Soil and Water Research, Vol 17, Iss 3, Pp 149-157 (2022) |
| Publisher Information: | Czech Academy of Agricultural Sciences, 2022. |
| Publication Year: | 2022 |
| Collection: | LCC:Agriculture |
| Subject Terms: | aggregation organic carbon, dissolved organic carbon, microbial biomass carbon, particle organic carbon, permanganate-oxidisable carbon, Agriculture |
| More Details: | Several experimental methods have been developed to fractionate soil organic carbon (SOC) into functional sub-pools. However, which fractions had the potential to better reflect the SOC dynamics responding to fertilisation are still under discussion. Thus, we compared different SOC fractions (microbial biomass carbon, MBC; dissolved organic carbon, DOC; permanganate-oxidisable carbon, POXC; particle organic carbon, POC, and aggregation organic carbon fractions) and the soil respiration rate in a wheat-corn rotation field after 40 years of manure and N fertilisation in North China to search for the most sensitive SOC fractions to fertilisation. Manure increased the organic carbon (OC) contents of all the soil fractions (26.5 to 362.8%) and the POC (18.0 to 43.7%) and macro-aggregation percentages (3.0 to 4.4%), which indicated an increasing physical-protected aggregated OC fraction. N fertilisation alone slightly increased the OC contents of all the soil fractions and DOC percentage, but decreased the macro-aggregation OC percentage, which suggests the increasing possibility that the SOC is exposed to microbial communities causing a decreasing aggregation formation. However, when a high level of both the manure and N fertiliser were applied, the excessive N in the soil stimulates the soil microbial activity and decreases the SOC content comparing it to the same level of the manure fertiliser addition. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 1801-5395 1805-9384 |
| Relation: | https://swr.agriculturejournals.cz/artkey/swr-202203-0002_soil-organic-carbon-fractions-comparison-after-40-year-long-term-fertilisation-in-a-wheat-corn-rotation-field.php; https://doaj.org/toc/1801-5395; https://doaj.org/toc/1805-9384 |
| DOI: | 10.17221/144/2021-SWR |
| Access URL: | https://doaj.org/article/e6bf5fc29684438c8758995d7bcb4272 |
| Accession Number: | edsdoj.6bf5fc29684438c8758995d7bcb4272 |
| Database: | Directory of Open Access Journals |
| ISSN: | 18015395 18059384 |
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| DOI: | 10.17221/144/2021-SWR |
| Published in: | Soil and Water Research |
| Language: | English |