干旱区生态环境知识资源中心(Arid): 东北地区芦苇植硅体浓度的时空分异规律

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	东北地区芦苇植硅体浓度的时空分异规律
其他题名	SPATIAL AND TEMPORAL DISTRIBUTION OF PHRAGMITES COMMUNIS PHYTOLITHS IN NORTHEAST CHINA
	刘利丹; 介冬梅; 刘洪妍; 高卓; 高桂在
来源期刊	微体古生物学报
ISSN	1000-0674
出版年	2016
卷号	33 期号:1 页码:45-54
中文摘要	芦苇是生态域极广的一种禾本科芦竹亚科植物,且其植硅体含量丰富,基于此,本文探讨了东北地区不同温度带及生长期的不同阶段芦苇植硅体浓度的变化规律,揭示芦苇植硅体的环境指示意义,从而为定量恢复古环境和探讨植硅体形成机理提供相关参考。结果表明:东北地区12个样点芦苇样品中共包含6种主要植硅体类型,其中鞍型的含量最高,是芦苇植硅体的优势类型。同时在不同温度带及生长期芦苇植硅体浓度具有明显差异。在东北地区,从温带到暖温带,芦苇植硅体和鞍型浓度均随温度升高而增多,但在不同湿度区,其随温度的变化趋势并不一致。总的来看,东北地区芦苇植硅体和鞍型浓度与温度的关系密切,可指示环境温度的变化,但其在一定程度上也受湿度的影响。在610月,芦苇植硅体和鞍型浓度均在其生长初期较多,而在9、10月相对较少,并推测植物植硅体浓度的变化规律可能与植物生长本身对硅的需求规律相一致。该结果有助于理解植硅体的形成机理,从而促进植硅体分析在古环境研究中的应用。
英文摘要	Based on the widespread and abundant phytolith produced by Phragmites communis phytoliths were extracted from 12sampling sites in Northeast China during JuneOctober in 2011and 2012.The changes of P.communis phytolith concentrations in different temperature zones and growth stages were used to reveal the ecological environmental significance of P.communis phytoliths.The main phytolith types extracted from the 12sampling sites and different growth stages were identical;however,the phytolith concentrations differed markedly.In NE China,from the temperate zone to the warm temperate zone,both the P.communis phytolith and saddle phytolith concentrations increased as the temperature increased,whereas in the humid,semi-humid,and semi-arid areas,the responses of P. communis phytolith concentrations to temperature were different.Consequently,the spatial results showed that P. communis phytolith concentrations in NE China were closely related to temperature,which enabled inference of the change in temperature from phytolith concentration;however,they were also somewhat affected by humidity.During JuneOctober,the temporal variation results of P.communis phytolith concentrations revealed that there were high P.communis phytolith and saddle phytolith concentrations in June or July,which was concordant with the need of silicon for plants in different growth stages.These findings may improve the understanding of phytolith formation,and provide useful information for the application of phytolith analysis in palaeoenvironment reconstruction.
中文关键词	植硅体 ; 芦苇 ; 生长期 ; 温度 ; 湿度 ; 东北地区
英文关键词	phytolith Phragmites communis growth period temperature humidity NE China
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PALEONTOLOGY
WOS研究方向	Paleontology
CSCD记录号	CSCD:5679188
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235105
作者单位	东北师范大学地理科学学院, 国家环境保护湿地生态与植被恢复重点实验室;;植被生态科学教育部重点实验室, 长春, 吉林 130024, 中国
推荐引用方式 GB/T 7714	刘利丹,介冬梅,刘洪妍,等. 东北地区芦苇植硅体浓度的时空分异规律[J],2016,33(1):45-54.
APA	刘利丹,介冬梅,刘洪妍,高卓,&高桂在.(2016).东北地区芦苇植硅体浓度的时空分异规律.微体古生物学报,33(1),45-54.
MLA	刘利丹,et al."东北地区芦苇植硅体浓度的时空分异规律".微体古生物学报 33.1(2016):45-54.