文献类型：期刊文献

英文题名：Effects of on- and off-year management practices on the soil organic C fractions and microbial community in a Moso bamboo (Phyllostachys edulis) forest in subtropical China

作者：Huang, Zhiyuan[1,2,3] Li, Qiaoling[1,2,3] Gai, Xu[4] Zhang, Xiaoping[1,2,5] Zhong, Zheke[1,2,3] Bian, Fangyuan[1,2,3] Yang, Chuanbao[1,2,3]

第一作者：Huang, Zhiyuan

通信作者：Zhang, XP[1];Zhang, XP[2];Zhang, XP[3]

机构：[1]Natl Forestry & Grassland Adm, China Natl Bamboo Res Ctr, Key Lab Bamboo Forest Ecol & Resource Utilizat, Hangzhou, Zhejiang, Peoples R China;[2]Natl Long Term Observat & Res Stn Forest Ecosyst H, Hangzhou, Zhejiang, Peoples R China;[3]Key Lab High Efficient Proc Bamboo Zhejiang Prov, Hangzhou, Zhejiang, Peoples R China;[4]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou, Zhejiang, Peoples R China;[5]Engn Res Ctr Biochar Zhejiang Prov, Hangzhou, Zhejiang, Peoples R China

年份：2022

卷号：13

外文期刊名：FRONTIERS IN PLANT SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000903008900001)】；

基金：This research was supported by the People's Government of Zhejiang Province-Chinese Academy of Forestry cooperative project (2020SY01), and the Fundamental Research Funds of CAF (CAFYBB2021QB007).

语种：英文

外文关键词：Bamboo; on- and off-year; C sequestration; bacteria; fungi

摘要：On- and off-year management practices are usually adopted in Moso bamboo (Phyllostachys edulis) forests to achieve higher productivity. However, little is known about the effects of these management practices on soil C sequestration and microbial community structure. In the present study, soil nutrient content, organic C fractions, and bacterial and fungal communities were comparatively investigated in on- and off-year bamboo stands. The results showed that soil organic C (SOC), alkali-hydrolyzable N (AN), and available P (AP) in the on-year were significantly lower (p <= 0.05) than those in the off-year. Among the different soil organic C fractions, easily oxidizable organic C (EOC), microbial biomass C (MBC), Ca-bound SOC (Ca-SOC), and Fe/Al-bound SOC (Fe/Al-SOC) also had significantly higher contents in the off-year than in the on-year, with MBC and EOC decreasing by 56.3% and 24.5%, respectively, indicating that both active and passive soil organic C pools increased in the off-year. However, the alpha diversities of both soil bacteria and fungi were significantly lower in the off-year soils than in the on-year soils. The bacterial taxa Actinobacteria, Planctomycetes, WPS-2, Acidothermus, Candidatus_Solibacter, Burkholderia-Caballeronia-Paraburkholderia, and Candidatus_Xiphinematobacter were increased in off-year soils relative to on-year soils. Meanwhile, fungal taxa Ascomycota, Mortierella, Hypocrea, Cryptococcus, Clitopilus, and Ceratocystis were significantly increased in on-year soils. Soil pH, SOC, AP, MBC, EOC, and Ca-SOC were significantly correlated with bacterial and fungal communities, with soil pH being the most important driving factor for the shift in bacterial and fungal communities. Our findings showed that the studied bamboo forest possessed an inherent restorative ability in the off-year, which can reverse the soil nutrient and C depletion in the on-years and ensure soil fertility in the long term.