Decades of reforestation significantly change microbial necromass, glomalin, and their contributions to soil organic carbon

Zhang, Mengling; Che, Rongxiao; Cheng, Zhibao; Zhao, Hongkai; Wu, Chengwei; Hu, Jinming; Zhang, Song; Liu, Dong; Cui, Xiaoyong; Wu, Yibo

doi:10.1016/j.agee.2023.108362

Cited by 17 publications

(1 citation statement)

References 98 publications

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“…Our study showed that, in the topsoil, the cumulative explanatory rates of TG, SWC, silt, SBD and Alt to the explainable part of SOC, TN, AN, TP and AP were all greater than 88.72%, and the cumulative explanatory rates of TG and SMC reached 45.28–77.33%, which were consistent with the results of existing studies ( Cai, 2021 ; Zhang et al, 2019a ; Zhang et al, 2019b ). As a metabolite of arbuscular mycorrhizal fungi, TG is an indirect way for plant and microbial communities to affect soil properties ( Li et al, 2015 ), and it is beneficial for soil aggregation, quality improvement, and SCNPC storage ( Zhang et al, 2023 ; Li et al, 2015 ), which are the main influencing factors effecting SCNPC ( Zhong et al, 2017 ). Although P. massnoiana is a typical ectomycorrhizal fungal host, a large number of arbuscular mycorrhizal host plants coexist in P. massoniana forest ( Zhang et al, 2021 ); therefore, TG has a non-negligible importment effect on SCNPC in topsoil of P. massoniana forest at different altitudes.…”

Section: Discussionmentioning

confidence: 99%

Changes in soil carbon, nitrogen, and phosphorus in Pinus massoniana forest along altitudinal gradients of subtropical karst mountains

Nie

Zhang

2023

PeerJ

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Changes in altitude have a long-term and profound impact on mountain forest ecosystems. However, there have been few reports on changes in soil carbon, nitrogen, and phosphorus contents (SCNPC) along altitudinal gradients in subtropical karst mountain forests, as well as on the factors influencing such changes. We selected five Pinus massoniana forests with an altitudinal gradient in the karst mountain area of Southwest China as research objects and analyzed the changes in SCNPC along the altitudinal gradient, as well as the influencing factors behind these changes. Soil organic carbon, total nitrogen, and available nitrogen contents first increased and then decreased with increasing altitude, whereas the contents of total phosphorus and available phosphorus showed no obvious trend. In the karst mountain P. massoniana forest, SCNPC in the topsoil is most significantly affected by total glomalin-related soil protein (TG) and soil moisture content (SMC) (cumulative explanatory rate was 45.28–77.33%), indicating that TG and SMC are important factors that affect SCNPC in the karst mountain P. massoniana forest. In addition, the main environmental factors that affect SCNPC in the subsoil showed significant differences. These results may provide a better scientific reference for the sustainable management of the subtropical mountain P. massoniana forest.

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