Files and links (1)
CC BY V4.0, Open Access
Journal article
Amino acid-sulphur decomposition in agricultural soil profile along a long-term recultivation chronosequence
The Science of the total environment, Vol.951, 175409
2024
Abstract
The significance of sulphur (S) availability for crop yield and quality is highlighted under the global S deficiency scenario. However, little is known about the temporal trend in belowground organic S mineralisation when restoring land to productive agricultural systems, particularly for the deeper soil parts. Therefore, we investigated the decomposition of 35S-labelled methionine in surface (0–30 cm) and subsurface soil (30–60 cm and 60–90 cm) over a 48-year recultivation chronosequence (sampled after1, 8, 14, 24 and 48 years). Soil total sulphur (TS) significantly (p < 0.05) increased in surface soil but not in subsurface soils after 48 years of recultivation. Overall, the immobilisation of 35S-methionine (35S-MB) in subsurface soils relative to year 1 significantly decreased over the chronosequence but did not change in the surface samples. The 35S-MB values in subsurface soils were positively corrected with soil carbon (C) stoichiometry (Pearson correlation, p < 0.05), suggesting the immobilisation of methionine was likely constrained by microbial C demand in deep soil. Compared to year 1, 35S-SO42− released from 35S-methionine significantly declined throughout the older (≥ 8 years) soil profiles. Significant (p < 0.05) changes in the organic 35S partition (35S immobilisation and 35S released as sulphate) were observed in year 8 after the soil was recultivated with N-fixing alfalfa or fertilisers. Whereas, after that (≥ 14 years), soil organic S partition remained affected when conventional tillage and agricultural crops dominated this site. Indicating that the effect of recultivation on organic S decomposition depends on the manner of recultivation management. Our study contributes to an improved understanding of amino acid S and organic S mineralisation under severe anthropogenic disturbance.
We evaluated the 35S-methionine immobilised in microbial biomass (35S-MB, indicated as a red arrow) and released as 35S-SO42− (indicated as a blue arrow) in the reclaimed agricultural soil profile after long-term (48-year) recultivation. The thickness of the arrows indicates the relative 35S content of the partition. The dashed arrow indicates the 35S-SO42− reutilised by microbes (the specific amount is not available). Four pictures (from left to right) indicate the beginning of the recultivation and the three phases (recultivated with alfalfa, fertilisers and conventional management) of the recultivation process. [Display omitted]
Details
- Title
- Amino acid-sulphur decomposition in agricultural soil profile along a long-term recultivation chronosequence
- Authors/Creators
- Qiqi Wang - University of AmsterdamSara L. Bauke - University of BonnDeying Wang - Bangor UniversityYi Zhao - Liaoning University of TechnologyRüdiger Reichel - Forschungszentrum JülichDavey L. Jones - Bangor UniversityDavid R. Chadwick - Bangor UniversityAlbert Tietema - University of AmsterdamRoland Bol - Forschungszentrum Jülich
- Publication Details
- The Science of the total environment, Vol.951, 175409
- Publisher
- Elsevier B.V
- Identifiers
- 991005694968907891
- Copyright
- © 2024 The Authors.
- Murdoch Affiliation
- Centre for Sustainable Farming Systems
- Language
- English
- Resource Type
- Journal article
UN Sustainable Development Goals (SDGs)
This output has contributed to the advancement of the following goals:
Metrics
2 File views/ downloads
28 Record Views
InCites Highlights
These are selected metrics from InCites Benchmarking & Analytics tool, related to this output
- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.45 Soil Science
- 3.45.112 Soil Carbon Dynamics
- Web Of Science research areas
- Environmental Sciences
- ESI research areas
- Environment/Ecology