气候变化领域集成服务门户(CCPortal): Plants sustain the terrestrial silicon cycle during ecosystem retrogression

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DOI	10.1126/SCIENCE.ABC0393
	Plants sustain the terrestrial silicon cycle during ecosystem retrogression
	De Tombeur F.; Turner B.L.; Laliberté E.; Lambers H.; Mahy G.; Faucon M.-P.; Zemunik G.; Cornelis J.-T.
发表日期	2020
ISSN	0036-8075
起始页码	1245
结束页码	1248
卷号	369 期号:6508
英文摘要	The biogeochemical silicon cycle influences global primary productivity and carbon cycling, yet changes in silicon sources and cycling during long-term development of terrestrial ecosystems remain poorly understood. Here, we show that terrestrial silicon cycling shifts from pedological to biological control during long-term ecosystem development along 2-million-year soil chronosequences in Western Australia. Silicon availability is determined by pedogenic silicon in young soils and recycling of plantderived silicon in old soils as pedogenic pools become depleted. Unlike concentrations of major nutrients, which decline markedly in strongly weathered soils, foliar silicon concentrations increase continuously as soils age. Our findings show that the retention of silicon by plants during ecosystem retrogression sustains its terrestrial cycling, suggesting important plant benefits associated with this element in nutrient-poor environments. Copyright © 2020 The Authors, some rights reserved.
英文关键词	silicon; silicon; biogeochemistry; carbon cycle; concentration (composition); nutrient cycling; retention; silicon; soil chemistry; soil-vegetation interaction; terrestrial ecosystem; age; Article; bioavailability; biogeochemistry; concentration (parameter); controlled study; ecosystem; ecosystem retrogression; nonhuman; pedogenesis (soil); plant; plant leaf; plant nutrient; priority journal; recycling; soil; terrestrial silicon cycle; Western Australia; Australia; chemistry; plant; Australia; Western Australia; Australia; Plant Leaves; Plants; Silicon; Soil
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/243487
作者单位	TERRA Teaching and Research Centre, Gembloux Agro-Bio Tech, University of Liege, Gembloux, 5030, Belgium; Smithsonian Tropical Research Institute, Balboa, Ancon, Panama; Institut de Recherche en Biologie Végétale, Département de Sciences Biologiques, Université de Montréal, Montréal, QC H1X 2B2, Canada; School of Biological Sciences, University of Western Australia, Perth, WA 6009, Australia; AGHYLE, UniLaSalle, Beauvais, 60026, France
推荐引用方式 GB/T 7714	De Tombeur F.,Turner B.L.,Laliberté E.,et al. Plants sustain the terrestrial silicon cycle during ecosystem retrogression[J],2020,369(6508).
APA	De Tombeur F..,Turner B.L..,Laliberté E..,Lambers H..,Mahy G..,...&Cornelis J.-T..(2020).Plants sustain the terrestrial silicon cycle during ecosystem retrogression.Science,369(6508).
MLA	De Tombeur F.,et al."Plants sustain the terrestrial silicon cycle during ecosystem retrogression".Science 369.6508(2020).