The phytolith carbon sequestration in terrestrial ecosystems:the underestimated potential of bamboo forest  

作　　者：Xuekun Cheng Huiru Lv Shuhan Liu Chong Li Pingheng Li Yufeng Zhou Yongjun Shi Guomo Zhou 

机构地区：[1]State Key Laboratory of Subtropical Silviculture,Zhejiang A&F University,Lin’an,Hangzhou 311300,China [2]Zhejiang Province Key Think Tank:Institute of Ecological Civilization,Zhejiang A&F University,Lin’an,Hangzhou 311300,China [3]Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province,Zhejiang A&F University,Lin’an,Hangzhou 311300,China [4]School of Environmental and Resources Science,Zhejiang A&F University,Lin’an,Hangzhou 311300,China

出　　处：《Ecological Processes》2023年第1期872-883,共12页生态过程（英文）

基　　金：funded by the Key Research and Development Program of Zhejiang Province(Grant Number:2023C02003);the National Natural Science Foundation of China(Grant Number:32001315,U1809208,31870618);the Key Research and Development Program of Zhejiang Province(Grant Number:2021C02005);the Scientific Research Development Fund of Zhejiang A&F University(Grant Number:2020FR008);the Key Research and Development Pro-gram of Zhejiang Province(Grant Number:2022C03039).

摘　　要：Background Terrestrial ecosystems contain significant carbon storage,vital to the global carbon cycle and climate change.Alterations in human production activities and environmental factors affect the stability of carbon storage in soil.Carbon sequestration in plant phytoliths offers a sustainable method for long-term carbon stabilization.Carbon occluded in phytoliths(PhytOC)is a kind of carbon that can be stable and not decomposed for a long time,so it is crucial to conduct more in-depth research on it.Results We undertook a meta-analysis on PhytOC across global terrestrial ecosystems,analyzing 60 articles,encapsulating 534 observations.We observed notable differences in phytolith and PhytOC contents across various ecosystems.Bamboo forest ecosystems exhibited the highest vegetation phytolith and PhytOC content,while soil phytolith content was most prominent in bamboo forests and PhytOC content in croplands.Human activities,such as grassland grazing,had a lesser impact on soil PhytOC transport than actions like cutting and tillage in croplands and forests.Our study separated bamboo ecosystems,analyzing their PhytOC content and revealing an underestimation of their carbon sink capacity.Conclusions Notwithstanding our findings,phytoliths’intricate environmental interactions warrant further exploration,crucial for refining ecosystem management and accurately estimating PhytOC stocks.This deepened understanding lays the foundation for studying phytoliths and the carbon sink dynamics.

关 键 词：Carbon sequestration PHYTOLITHS PhytOC Terrestrial ecosystem Soil carbon 

分 类 号：X171.1[环境科学与工程—环境科学]