AUTHOR=Hao Qian , Yang Shilei , Song Zhaoliang , Li Zichuan , Ding Fan , Yu Changxun , Hu Guozheng , Liu Hongyan TITLE=Silicon Affects Plant Stoichiometry and Accumulation of C, N, and P in Grasslands JOURNAL=Frontiers in Plant Science VOLUME=Volume 11 - 2020 YEAR=2020 URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2020.01304 DOI=10.3389/fpls.2020.01304 ISSN=1664-462X ABSTRACT=
Silicon (Si) plays an important role in improving soil nutrient availability and plant carbon (C) accumulation and may therefore impact the biogeochemical cycles of C, nitrogen (N), and phosphorus (P) in terrestrial ecosystems profoundly. However, research on this process in grassland ecosystems is scarce, despite the fact that these ecosystems are one of the most significant accumulators of biogenic Si (BSi). In this study, we collected the aboveground parts of four widespread grasses and soil profile samples in northern China and assessed the correlations between Si concentrations and stoichiometry and accumulation of C, N, and P in grasses at the landscape scale. Our results showed that Si concentrations in plants were significantly negatively correlated (