文献类型：期刊文献

英文题名：Linkages between the soil microbial network and nutrient cycling along a subtropical plantation chronosequence

作者：Wang, Yaxin[1] Zhu, Yuan[1] Meng, Sen[1] Wang, Shengkun[1] Yang, Fucheng[1] Qin, Fangcuo[1] Lu, Junkun[1]

通信作者：Qin, FC[1]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, State Key Lab Tree Genet & Breeding, Guangzhou 510520, Guangdong, Peoples R China

年份：2025

外文期刊名：PLANT AND SOIL

收录：;Scopus(收录号：2-s2.0-105009498322);WOS:【SCI-EXPANDED(收录号:WOS:001520017100001)】；

基金：We thank Chun Mao and Yanfang Liang for their field assistance. This work was jointly funded by the National Natural Science Foundation of China (32471849), National Key Research and Development Program of China (2023YFD2201005), Fundamental Research Funds of CAF (CAFYBB2023MA007), Guangdong Basic and Applied Basic Research Foundation (2022A1515010413), and APP-RITF Cooperation Program (RITFKFXY2022-46).

语种：英文

外文关键词：Eucalyptus; Soil microbe; Co-occurrence network; Soil carbon and nitrogen; Plantation age

摘要：Background and aimsEucalyptus is an important afforestation species that largely influences soil nutrient cycling and ecosystem functions. However, little is known about how the successive planting of Eucalyptus affects the soil microbial community and how interactions between different soil microorganisms affect soil nutrient availability.MethodsIn this work, we investigated the changes in the co-occurrence networks of the soil microbial community in both rhizosphere and bulk soils along a Eucalyptus plantation chronosequence (2, 7, 12, 17, and 22 years). We further studied the influences of interaction networks between the soil fungal and bacterial communities on soil carbon and nitrogen nutrients.ResultsSoil microbial networks were significantly affected by plantation age and soil compartment type. The co-occurrence networks of rhizosphere soil had the greatest numbers of negative edges, positive edges and total edges, the greatest network density, and the greatest network average degree at 7 years, whereas those of bulk soil were the greatest at 12 years. The community compositions in the microbial networks of rhizosphere soil were significantly associated with soil total nitrogen, microbial biomass carbon and nitrogen. Network complexity was more important than microbial diversity and nutrient functional genes in affecting soil carbon and nitrogen cycling.ConclusionsOur results highlight the importance of interaction networks between fungal and bacterial communities in regulating soil nutrient cycling. This work has important implications for promoting the sustainable forest management of Eucalyptus plantations.