Soil Organic Matter Dynamics and Microbial Roles in Biogeochemical Cycles in Forestry

A special issue of Forests (ISSN 1999-4907). This special issue belongs to the section "Forest Soil".

Deadline for manuscript submissions: 30 November 2025 | Viewed by 437

Special Issue Editors


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Guest Editor
Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
Interests: soil organic carbon; biogeochemistry; microbial nutrient limitation; nitrogen cycle; phosphorus transformation; climate change

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Guest Editor
Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
Interests: soil carbon chemical composition; carbon accumulation; arbuscular mycorrhizal fungi; soil nutrients; soil phosphorus

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Guest Editor Assistant
Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hong Kong, China
Interests: dissolved organic matter; water pollution; wastewater treatment; environmental science; waste resource recovery

Special Issue Information

Dear Colleagues,

Forests play a critical role in maintaining ecological balance, regulating climate, and promoting economic development. However, forests are facing multiple threats globally, such as deforestation, land degradation, climate change, forest fires, pests and diseases, and invasive alien species, leading to a decline in the stability of forest ecosystems and biodiversity. This is linked to imbalances in biogeochemical cycles, as biogeochemical processes affect the survival and reproduction of species, as well as the formation and maintenance of community structures, in forest ecosystems. Soil organic carbon is an important basis for soil fertility and ecosystem functioning; microorganisms are key drivers of soil organic carbon decomposition, formation, and transformation; and changes in organic carbon and microorganisms can greatly affect biogeochemical cycles. This Special Issue compiles and showcases the latest advancements in relation to the roles of soil organic carbon and microbes in biogeochemical cycles, with the aim of providing a theoretical basis for the restoration and enhancement of forest ecosystem functions. We welcome submissions of various types of literature, including review articles, research papers, and more.

Possible topics, include, but are not limited to, the following:

  • The role of soil organic matter in forest biogeochemical cycles;
  • Microbial regulation mechanisms in biogeochemical cycles;
  • Relationship between biogeochemical cycles and forest productivity and stability;
  • Effects of land use change on biogeochemical cycles;
  • Effects of climate change on biogeochemical cycles;
  • Effects of forest restoration on biogeochemical cycles;
  • Climate change mitigation strategies through biogeochemical cycle management.

Dr. Zhiyang Lie
Dr. Xuli Tang
Guest Editors

Dr. Tongtong Zhou
Guest Editor Assistant

Manuscript Submission Information

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Keywords

  • biogeochemical cycle
  • carbon sequestration
  • nitrogen cycle
  • phosphorus cycle
  • sulfur cycle
  • microbial processes
  • forest ecosystems
  • forest management

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Published Papers (1 paper)

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Research

19 pages, 8099 KiB  
Article
Soil Microbial Communities and Their Relationship with Soil Nutrients in Different Density Pinus sylvestris var. mongolica Plantations in the Mu Us Sandy Land
by Long Hai, Mei Zhou, Kai Zhao, Guangyu Hong, Zihao Li, Lei Liu, Xiaowei Gao, Zhuofan Li and Fengzi Li
Forests 2025, 16(3), 547; https://doi.org/10.3390/f16030547 - 19 Mar 2025
Viewed by 267
Abstract
In the Mu Us Sandy Land, vegetation is closely related to soil microorganisms and nutrients. However, research on the relationship between soil microbial communities and nutrients in Pinus sylvestris var. mongolica plantations of different densities is still imperfect. This study selected Pinus sylvestris [...] Read more.
In the Mu Us Sandy Land, vegetation is closely related to soil microorganisms and nutrients. However, research on the relationship between soil microbial communities and nutrients in Pinus sylvestris var. mongolica plantations of different densities is still imperfect. This study selected Pinus sylvestris var. mongolica plantations with high, medium, and low densities, as well as bare sandy land, to analyze the relationship between vegetation density and soil nutrients, microbial community structure, and diversity indices. The results show that the following: (1) Medium-density plantations significantly increased soil organic matter, total nitrogen, and total potassium content, which were 4.3 times that of bare sandy land and 1.7 times that of high-density plantations; (2) In high-density plantations, the relative abundance of bacterial phyla Actinobacteriota and fungal phylum Ascomycota was higher; as plantation density decreased, the relative abundance of bacterial phyla Proteobacteria and Acidobacteriota and fungal phylum Basidiomycota increased, with different density plantations significantly affecting soil microbial community structure; (3) High-density plantations significantly increased the abundance of bacterial and fungal genera but also reduced bacterial diversity indices, while medium-density plantations were outstanding in enhancing fungal species richness and diversity, with the highest fungal Shannon index, indicating that medium density is conducive to fungal diversity enhancement; (4) Soil organic matter, total nitrogen, total phosphorus, total potassium, and pH value were the main environmental factors affecting soil microbial community structure. High-density plantations significantly affected soil microbial community structure by changing these soil nutrients and physicochemical properties, especially related to changes in total potassium and pH value. This study clarified the effects of Pinus sylvestris var. mongolica plantation density on soil nutrients and microbial community structure, revealing the intrinsic connection between soil nutrients and microbial communities, providing a theoretical basis for vegetation restoration in the Mu Us Sandy Land ecosystem, and helping to formulate scientific management strategies for Pinus sylvestris var. mongolica plantations to improve sandy land soil quality and promote the sustainable development of sandy land ecosystems. Full article
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