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Open AccessArticle

Intensive Management Increases Phytolith-Occluded Carbon Sequestration in Moso Bamboo Plantations in Subtropical China

by Chengpeng Huang 1,2,3,4, Yongchun Li 1,2,3,4, Jiasen Wu 1,2,3, Zhangting Huang 1,2,3, Scott X. Chang 1,4,* and Peikun Jiang 1,2,3,*
1
State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an 311300, China
2
Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, Zhejiang A&F University, Lin’an 311300, China
3
School of Environmental and Resources Science, Zhejiang A&F University, Lin’an 311300, China
4
442 Earth Sciences Building, Department of Renewable Resources, University of Alberta, Edmonton, AB T6G 2E3, Canada
*
Authors to whom correspondence should be addressed.
Forests 2019, 10(10), 883; https://doi.org/10.3390/f10100883
Received: 9 July 2019 / Revised: 26 September 2019 / Accepted: 27 September 2019 / Published: 7 October 2019
(This article belongs to the Section Forest Ecology and Management)
Plantation management practices could markedly change the sequestration of phytolith-occluded carbon (PhytOC) in plants and soils. However, for Moso bamboo (Phyllostachys pubescens) plantations, the effect of intensive plantation management (including fertilization, tillage, and removal of understory vegetation) on the accretion rate of PhytOC in the soil-plant system is much less understood than extensive management (without fertilization, tillage, and removal of understory vegetation). The objectives of this study were to investigate the effect of intensive and extensive management practices on the production, accumulation, and runoff of PhytOC and their distribution in physical fractions in Moso bamboo plantations. Our results showed that intensive management (1) increased PhytOC production mainly due to increased forest productivity; (2) increased PhytOC storage in the heavy fraction but decreased its storage in the light fraction of organic matter, resulting in the lack of effect on soil PhytOC storage; (3) increased the rate of dissolution of phytolith and the loss of PhytOC in runoff; and (4) promoted PhytOC sequestration in the soil-plant system, mostly in the plants, due to the greater rate of PhytOC production than the rate of loss. We conclude that intensive bamboo plantation management practices are beneficial to increasing long-term PhytOC sequestration in the soil-plant system. View Full-Text
Keywords: PhytOC; phytolith; plantation management; Moso bamboo forest PhytOC; phytolith; plantation management; Moso bamboo forest
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Huang, C.; Li, Y.; Wu, J.; Huang, Z.; Chang, S.X.; Jiang, P. Intensive Management Increases Phytolith-Occluded Carbon Sequestration in Moso Bamboo Plantations in Subtropical China. Forests 2019, 10, 883.

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