文献类型：期刊文献

英文题名：Mixed and continuous cropping eucalyptus plantation facilitated soil carbon cycling and fungal community diversity after a 14-year field trail

作者：Li, Ning[1] Zhang, Yuemei[1] Qu, Zhaolei[1] Liu, Bing[1] Huang, Lin[1] Ming, Angang[2] Sun, Hui[1,3]

第一作者：Li, Ning

通信作者：Sun, H[1]

机构：[1]Nanjing Forestry Univ, Coll Forestry & Grassland, Collaborat Innovat Ctr Sustainable Forestry Southe, Nanjing 210037, Peoples R China;[2]Chinese Acad Forestry, Expt Ctr Trop Forestry, Guangxi Youyiguan Forest Ecosyst Res Stn, Pingxiang 532699, Peoples R China;[3]Univ Helsinki, Dept Forest Sci, Helsinki 00790, Finland

年份：2024

卷号：210

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20240615520956);Scopus(收录号：2-s2.0-85183994258);WOS:【SCI-EXPANDED(收录号:WOS:001180298700001)】；

基金：This study was supported by the National Key Research and Development Program of China (Number: 2021YFD0600103). The 14th Five-Year National Key Research and Development Plan project "Improving Management Technology and Increasing Potential of Carbon Sinks in Typical Forest Ecosystems" (2021YFD2200405). Guangxi Science and Technology Base and Talent Project (AD20325008). Jiangsu Provincial Qinglan Project of Jiangsu Province of China.

语种：英文

外文关键词：Mixed plantation; Fungal network; Quantitative microbial element cycling; Soil properties; Organic carbon

摘要：The large-scale cultivation of eucalyptus (Eucalyptus) globally has led to soil degradation and a reduction in microbial diversity. To address this challenge, mixed eucalyptus plantations have been proposed, yet their impact on fungal communities and soil carbon cycling remain poorly understood. This study investigated soil enzyme activity, fungal communities, and carbon cycling-related genes in two management models of eucalyptus plantations (continuous cropping and mixed eucalyptus with nitrogen-fixing trees) over a 14-year period. The results revealed that mixed plantation led to a decrease in soil beta-glucosidase activity, which in turn facilitated the accumulation of microbial biomass carbon. Both mixed and continuous cropping eucalyptus plantation exhibited higher fungal diversity and richness, along with a higher number of unique fungal species. The fungal community and functional gene structures in mixed and continuous cropping plantations significantly differed from the pure and first-generation plantations, respectively. Additionally, fungal network in mixed and continuous cropping eucalyptus plantation showed greater complexity and stability. Notably, mixed plantation increased the abundance of Cladophialophora genus. Interestingly, a negative correlation was found between fungal amplicon sequence variant (ASVs) and microbial carbon content, as well as beta-Xylosidase, with 72 ASVs exhibiting a significant negative correlation. Furthermore, both mixed and continuous cropping plantations elevated the abundance of genes associated with methane metabolism, carbon fixation and carbon degradation. This study underscores the importance of continuous cropping and mixing with nitrogen-fixing tree species, in plantation management to enhance soil carbon cycling and promote diverse fungal communities. These findings provide valuable insights for optimizing eucalyptus plantation strategies to improve soil health and enhance microbial diversity.