title: Long-term intensive management increased carbon occluded in phytolith (PhytOC) in bamboo forest soils.
abstract: Carbon (C) occluded in phytolith (PhytOC) is highly stable at millennium scale and its accumulation in soils can help increase long-term C sequestration. Here, we report that soil PhytOC storage significantly increased with increasing duration under intensive management (mulching and fertilization) in Lei bamboo (Phyllostachys praecox) plantations. The PhytOC storage in 0-40 cm soil layer in bamboo plantations increased by 217 Mg C ha(-1), 20 years after being converted from paddy fields. The PhytOC accumulated at 79 kg C ha(-1) yr(-1), a rate far exceeding the global mean long-term soil C accumulation rate of 24 kg C ha(-1) yr(-1) reported in the literature. Approximately 86% of the increased PhytOC came from the large amount of mulch applied. Our data clearly demonstrate the decadal scale management effect on PhytOC accumulation, suggesting that heavy mulching is a potential method for increasing long-term organic C storage in soils for mitigating global climate change.
authors.affiliation: Zhejiang Provincial Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration, Zhejiang A & F University, Lin'an 311300, China.
authors.forename: Zhang-ting
authors.initials: ZT
authors.lastname: Huang
authors.affiliation: Zhejiang Provincial Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration, Zhejiang A & F University, Lin'an 311300, China.
authors.forename: Yong-fu
authors.initials: YF
authors.lastname: Li
authors.affiliation: Zhejiang Provincial Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration, Zhejiang A & F University, Lin'an 311300, China.
authors.forename: Pei-kun
authors.initials: PK
authors.lastname: Jiang
authors.affiliation: Department of Renewable Resources, University of Alberta, 442 Earth Sciences Building, Edmonton AB T6G 2E3, Canada.
authors.forename: Scott X
authors.initials: SX
authors.lastname: Chang
authors.affiliation: Zhejiang Provincial Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration, Zhejiang A & F University, Lin'an 311300, China.
authors.forename: Zhao-liang
authors.initials: ZL
authors.lastname: Song
authors.affiliation: Zhejiang Provincial Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration, Zhejiang A & F University, Lin'an 311300, China.
authors.forename: Juan
authors.initials: J
authors.lastname: Liu
authors.affiliation: Zhejiang Provincial Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration, Zhejiang A & F University, Lin'an 311300, China.
authors.forename: Guo-mo
authors.initials: GM
authors.lastname: Zhou
mesh_terms: D031723:Bambusa; D002244:Carbon / Q000032:analysis*; D012987:Soil / Q000737:chemistry*; D014197:Trees
chemical_list: D012987:Soil; D002244:Carbon