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. 2015 Aug 25:5:13292.
doi: 10.1038/srep13292.

A Study of Phytolith-occluded Carbon Stock in Monopodial Bamboo in China

Jie Yang  1 , Jiasen Wu  1   2 , Peikun Jiang  1   2 , Qiufang Xu  1   2 , Peiping Zhao  1 , Shanqiong He  1
Affiliations

A Study of Phytolith-occluded Carbon Stock in Monopodial Bamboo in China

Jie Yang et al. Sci Rep. .

Abstract

Bamboo plants have been proven to be rich in phytolith-occluded carbon (PhytOC) and play an important role in reducing atmospheric concentrations of CO2. The object of this paper was to obtain more accurate methods for estimation of PhytOC stock in monopodial bamboo because previous studies may have underestimated it. Eight monopodial bamboo species, widely distributed across China, were selected and sampled for this study in their own typical distribution areas. There were differences (P < 0.05) both in phytolith content (Phytolith/dry biomass) across leaves, branches and culm, and in PhytOC content (PhytOC/dry biomass) across leaves and branches between species, with a trend of leaf > branch > culm. The average PhytOC stored in aboveground biomass and PhytOC production flux contributed by aboveground biomass varied substantially, and they were 3.28 and 1.57 times corresponding dates in leaves, with the highest in Phyllostachys glauca McClure and lowest in Indocalamus tessellatus (Munro) Keng f. It can be concluded that it could be more accurate to estimate PhytOC stock or PhytOC production flux by basing on whole aboveground biomass rather than on leaf or leaf litter only. The whole biomass should be collected for more estimation of bamboo PhytOC sequestration capacity in the future.

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Figures

Figure 1
Figure 1
Comparison of Phytolith/dry biomass (A), and PhytOC/dry biomass (B) in different organs of 8 widely distributed bamboo species. Error bars are standard error (n = 4); different lowercase letters indicate significant differences among the bamboo species at P = 0.05 level based on the least significant difference (LSD) test.
Figure 2
Figure 2. Comparison of PhytOC stockpiled in different organs of 8 widely distributed bamboo species.
Error bars are standard error (n = 4); different lowercase letters indicate significant differences among the bamboo species at P = 0.05 level based on the least significant difference (LSD) test.
Figure 3
Figure 3. Correlation between 4 parameters for bamboo leaves.
(A) Si/dry biomass and phytolith/dry biomass, (B) Si/dry biomass and PhytOC/dry biomass, (C) phytolith/dry biomass and PhytOC/phytolith, (D) phytolith/dry biomass and PhytOC/dry biomass.
Figure 4
Figure 4. PhytOC production flux as estimated by different researchers.
The PhytOC production flux based on leaf litter except for aboveground biamoss.
See this image and copyright information in PMC

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