Data · dataset · 2026
Consistent effects of inorganic and organic N addition on microbial necromass carbon in subtropical forest soils: A mesocosm study
Listed in Teesside University Research Data Repository
Atmospheric nitrogen (N) deposition can substantially influence the accumulation of microbial residues in forest soils.
Description
However, the effects of deposited N forms on soil microbial necromass carbon (MNC) and the underlying microbial mechanisms remain unclear. In this study, an N addition experiment was conducted in a subtropical plantation to investigate the effects of inorganic N (NH4Cl) and organic N (urea and glycine) on soil microbial biomass, hydrolytic enzyme activities, and MNC at 0–10 cm and 10–20 cm depths.
The results showed that, despite unchanged soil organic carbon (SOC) content and mineralization, additions of NH4Cl, urea, and glycine reduced soil MNC by 20.7%, 17.4%, and 20.1%, respectively. This decline in soil MNC was mainly attributable to a reduction in fungal necromass carbon, whereas bacterial necromass carbon remained unchanged following N addition. Regardless of N form, N addition increased microbial biomass, intensified microbial carbon and phosphorus limitations, and shifted microbial communities from r- to K-strategists.
Read the rest (1 more)
Furthermore, both inorganic and organic N addition decreased the MNC:SOC ratio, indicating a reduced contribution of microbial residues to the SOC pool. Shifts in microbial community composition toward K-strategists, together with aggravated phosphorus limitation, accounted for the decline in soil MNC under N addition. Overall, these findings suggest that, irrespective of N form, atmospheric N deposition weakens the contribution of MNC to SOC by regulating microbial life-history strategies and nutrient limitations in subtropical plantations.
Links
Where it is published
- DOI doi.org/10.17632/vpvmmvmrjx.1 ↗
DOI / persistent id · from researchdata tees ac uk
Catalogue records · 1
- OAI-PMH record data.mendeley.com/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Adata… ↗
metadata API · from researchdata tees ac uk
Topics
- From keywords
- Earth & Environmental Science
Provenance · 1 source records, 6 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| Teesside University Research Data Repository | oai:data.mendeley.com/vpvmmvmrjx.1 | 20 h ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · researchdata tees ac uk | connector:researchdata_tees_ac_uk@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · researchdata tees ac uk | connector:researchdata_tees_ac_uk@1.0.0 | |
| description | source · researchdata tees ac uk | connector:researchdata_tees_ac_uk@1.0.0 | /metadata/dc/description |
| license | source · researchdata tees ac uk | connector:researchdata_tees_ac_uk@1.0.0 | /metadata/dc/rights |
| publication_date | source · researchdata tees ac uk | connector:researchdata_tees_ac_uk@1.0.0 | |
| title | source · researchdata tees ac uk | connector:researchdata_tees_ac_uk@1.0.0 | /metadata/dc/title |