期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 807, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2021.150857
关键词
Arbuscular mycorrhizal fungi; Nutrient losses; Nitrogen; Phosphorus; Nitrous oxide; meta-analysis
资金
- National Natural Sciences Foundation of China [41703066, U1805243]
- Forestry Peak Discipline Construction Project [71201800730]
Arbuscular mycorrhizal fungi (AMF) can significantly reduce soil nitrogen and phosphorus losses, and the mitigation effects depend on the identity of inoculum, plant type, and soil biotic and abiotic factors.
Nutrient loss from terrestrial ecosystems via leaching and gaseous emissions is increasingly threatening global environmental and human health. Although arbuscular mycorrhizal fungi (AMF) have been shown to regulate soil N and P losses, a comprehensive quantitative overview of their influences on the losses of these soil nutrients across global scales is currently lacking. This study used a meta-analysis of 322 observations from 36 studies to assess the effect of AMF inoculum on 11 variables related to the loss of soil N and P. We found that the presence of AMF significantly reduced soil N and P losses, with the most pronounced reduction occurring in soil NO3--N (-32%), followed by total P (-21%), available P (-16%) and N2O (-10%). However, the mitigation effects of AMF on soil N and P loss were dependent on the identity of AMF inoculum, plant type and soil biotic and abiotic factors. Generally, the mitigation effects of AMF increased with increasing AMF root colonization rate, microbial diversity of inoculants, soil organic carbon (SOC) content and experimental duration as well as with decreasing soil sand contents and soil N and P availability. Overall, this meta-analysis highlights the importance of AMF inoculation in mitigating N and P nutrient loss and environmental pollution for terrestrial ecosystem sustainability. (C) 2021 Published by Elsevier B.V.
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