2026-10-13T08:49:30Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34010724 2026-09-28T08:08:09Z category_26986 item_type_3 month_year_09_2026

<b>Fungal necromass carbon rather than plant-derived carbon dominates POC and MAOC</b><b>: evidence from thinning and replanting forest management</b> Huiling Zhou (25120746) Ying Yang (24175) Yuxuan Li (1674307) Li Zhan (4595095) Sining Liu (10307723) Lixia Wang (331745) Han Li (10885) Lin Xu (8669682) Chengming You (6714500) Hongwei Xu (22535697) Bo Tan (471492) Zhenfeng Xu (2937984) Sha Xue (795827) Soil chemistry and soil carbon sequestration (excl. carbon sequestration science) SOC fractions microbial necromass carbon Lignin Forest Thinning Microbial <p dir="ltr"><a href="" target="_blank">Thinning and replanting of broadleaf trees (TRBT) can reshape plantation stand structure while potentially enhancing soil organic carbon (SOC) sequestration. </a>However, the effects of TRBT on particulate organic carbon (POC) and <a href="" target="_blank">mineral-associated organic carbon</a> (MAOC), along with the contributions of plant-derived C (PDC) and microbial necromass carbon (MNC) to these fractions remain unclear. Here, <a href="" target="_blank">we established five treatments in a Chinese fir plantation: unthinned control (NT), thinning without replanting (NP), and thinning followed by replanting with evergreen broadleaf (<i>Schima superba</i>, CS), deciduous broadleaf (<i>Liquidambar formosana</i>, CL), or both species (CLS). </a>We examined how TRBT affected POC and MAOC, quantified the contributions of PDC and MNC to these fractions, and determined the key factors. TRBT <a href="" target="_blank">generally increased</a> MAOC by 20.33%, 13.85%, and 10.80% in CS, CL, and CLS, respectively, but did not significantly affect POC. Compared with NT, CL had higher bacterial necromass carbon (BNC) and MNC in POC and MAOC, with CS exhibiting the greatest MNC contribution to POC and CL to MAOC. All TRBT treatments reduced PDC, with the strongest reduction in CL. MNC, predominantly composed of fungal necromass carbon (FNC), made greater contributions to POC and MAOC than PDC. POC and MAOC increased with MNC, whereas PDC showed a negative relationship with POC. Soil physicochemical and <a href="" target="_blank">micro</a>bial properties were the main predictors, with TN, TP, and MBP as key drivers. These findings suggest that MAOC was more responsive than POC to TRBT, and FNC rather than PDC dominated POC and MAOC accumulation following thinning and replanting.</p> 2026-09-28T08:08:09Z Dataset Dataset 10.6084/m9.figshare.34010724.v1 https://figshare.com/articles/dataset/_b_Fungal_necromass_carbon_rather_than_plant-derived_carbon_dominates_POC_and_MAOC_b_b_evidence_from_thinning_and_replanting_forest_management_b_/34010724 CC BY 4.0