DOI: 10.1002/2014GB005049
Scopus记录号: 2-s2.0-84929434299
论文题名: Silicon pools in human impacted soils of temperate zones
作者: Vandevenne F ; I ; , Barão L ; , Ronchi B ; , Govers G ; , Meire P ; , Kelly E ; F ; , Struyf E
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2015
卷: 29, 期: 9 起始页码: 1439
结束页码: 1450
语种: 英语
英文关键词: biogenic silicon
; biogeochemistry
; land use change
; pedogenic silicon
; phytoliths
; temperate weathering
Scopus关键词: anthropogenic effect
; biogeochemistry
; climate effect
; crop plant
; diatom
; environmental disturbance
; eutrophication
; land use change
; organic carbon
; parent material
; pedogenesis
; phytolith
; silicate
; silicon
; temperate environment
; vegetation cover
; weathering
; yield response
; Bacillariophyta
英文摘要: Besides well-known effects of climate and parent material on silicate weathering the role of land use change as a driver in the global silicon cycle is not well known. Changes in vegetation cover have altered reservoirs of silicon and carbon in plants and soils. This has potential consequences for plant-Si availability, agricultural yields, and coastal eutrophication, as Si is a beneficial element for many crop plants and an essential nutrient for diatom growth. We here examined the role of sustained and intensive land use and human disturbance on silicon (Si) pool distribution in soils with similar climatological and bulk mineralogical characteristics. We show that land use impacts both biogenic and nonbiogenic Si pools. While biogenic Si strongly decreases along the land use change gradient (from forest to croplands), pedogenic silica fractions (e.g. pedogenic clays) increase in topsoils with a long duration of cultivation and soil disturbance. Our results suggest that nonbiogenic Si pools might compensate for the loss of reactive biogenic silicon in temperate zones. © 2015. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77941
Appears in Collections: 气候变化事实与影响
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作者单位: Research Group Ecosystem Management, University of Antwerp, Wilrijk, Belgium; Department of Earth and Environmental Sciences, Catholic University Leuven, Leuven, Belgium; Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO, United States
Recommended Citation:
Vandevenne F,I,, Barão L,et al. Silicon pools in human impacted soils of temperate zones[J]. Global Biogeochemical Cycles,2015-01-01,29(9)