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辽河三角洲湿地表层沉积物的风化特征及其对生物作用的指示意义
投稿时间:2018-06-28  修订日期:2018-09-21  点此下载全文
引用本文:李通通,叶思源,韩宗珠,袁红明,裴理鑫.2019.辽河三角洲湿地表层沉积物的风化特征及其对生物作用的指示意义[J].地质论评,65(1):40-51.
LI Tongtong,YE Siyuan,HAN Zongzhu,YUAN Hongming,PEI Lixin.2019.Weathering Characteristics of the Surface Sediments and Their Indications for Biological Process in the Liaohe Delta Wetlands[J].Geological Review,65(1):40-51.
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作者单位E-mail
李通通 1)中国海洋大学海洋地球科学学院山东青岛2661002)中国地质调查局滨海湿地生物地质重点实验室山东青岛2660713)青岛海洋地质研究所山东青岛266071 lttfcs@163.com 
叶思源 2)中国地质调查局滨海湿地生物地质重点实验室山东青岛2660713)青岛海洋地质研究所山东青岛266071 siyuanye@hotmail.com 
韩宗珠 1)中国海洋大学海洋地球科学学院山东青岛266100  
袁红明 2)中国地质调查局滨海湿地生物地质重点实验室山东青岛2660713)青岛海洋地质研究所山东青岛266071  
裴理鑫 2)中国地质调查局滨海湿地生物地质重点实验室山东青岛2660713)青岛海洋地质研究所山东青岛2660714)中国地质大学(武汉)武汉430074  
基金项目:本文为科技部中美政府间科技创新重点专项(编号:2016YFE0109600),大地调项目(编号:1212010611402),国土资源部公益性行业基金项目(编号: 201111023),海洋地质保障工程项目(编号: GZH201200503),国家自然科学基金青年基金资助项目(编号:41406082),山东省自然科学基金青年基金资助项目(编号:ZR2014DQ010)的成果。
中文摘要:通过对辽河三角洲273个上三角洲平原湿地表层沉积物及100个浅海湿地表层沉积物的粒度和常量元素的系统测试,且对其中的128个表层沉积物样进行了球囊霉素蛋白(GRSP)的提取与分析,揭示了研究区GRSP、粒度、常量元素分布和风化特征及其控制机制,研究表明:上三角洲平原湿地表层沉积物以砂质粉砂和粉砂为主,而浅海湿地表层沉积物由于受潮汐及波浪的淘洗作用影响,颗粒较粗以粉砂质砂和砂质粉砂为主;研究区常量元素以SiO2和Al2O3含量最高,其它元素平均含量均小于5%,且除了CaO外,其它常量元素与沉积物粒度呈显著相关(p<0.01);值得注意的是,本研究发现有植被覆盖的上三角洲平原湿地地区的风化指数(CIA=58.50)显著地高于浅海湿地沉积物的风化指数(CIA=50.17,p<0.05)以及近基岩山区的风化指数(CIA=52,p<0.05),Na/K值与CIA指数分析表明该区从近基岩山区、浅海湿地至有植被覆盖的上三角洲平原湿地依次呈未受化学风化、初等化学风化和中等化学风化过渡特征,且CIA值与GRSP含量呈显著相关(r=0.47,p<0.01),由此揭示了生物作用在地质体风化过程的重要意义。
中文关键词:球囊霉素蛋白  常量元素  化学风化  辽河三角洲
 
Weathering Characteristics of the Surface Sediments and Their Indications for Biological Process in the Liaohe Delta Wetlands
NameInstitution
LI Tongtong1) College of Marine Geosciences, Ocean University of China, Qingdao, Shandong, 266100;2) Key Laboratory of Coastal Wetland Biogeosciences, China Geologic Survey, Qingdao, Shandong, 266071;3) Qingdao Institute of Marine Geology, Qingdao, Shandong, 266071
YE Siyuan2) Key Laboratory of Coastal Wetland Biogeosciences, China Geologic Survey, Qingdao, Shandong, 266071;3) Qingdao Institute of Marine Geology, Qingdao, Shandong, 266071
HAN Zongzhu1) College of Marine Geosciences, Ocean University of China, Qingdao, Shandong, 266100
YUAN Hongming2) Key Laboratory of Coastal Wetland Biogeosciences, China Geologic Survey, Qingdao, Shandong, 266071;3) Qingdao Institute of Marine Geology, Qingdao, Shandong, 266071
PEI Lixin2) Key Laboratory of Coastal Wetland Biogeosciences, China Geologic Survey, Qingdao, Shandong, 266071;3) Qingdao Institute of Marine Geology, Qingdao, Shandong, 266071;4)China University of Geosciences(Wuhan), Wuhan, 430074
Abstract:Objectives: In order to reveal the relationship among the particle size, major elements, glomalin related soil protein (GRSP) distributions, and to explore weathering characteristics and the control mechanism in Liaohe river Delta. Methods: 373 surface sediments across the upper delta plain wetlands (UDPW) and shallow sea wetlands (SSW) were collected from study area.The particle size were tested by Master sizer 2000 laser particle size analyzer, and major elements of surface sediments were tested by Axios PW4400 X- ray fluorescence spectrometer, GRSP analyses used Coomassie plus (Bradford) assay method. Results:The averaged mean grain size (Mz) of sediment in the SSW was 5.22 ± 0.14 Ф, significantly larger than that in the UDPW.Six types were identified for the SSW and river channel, less concentrated than UDPW, where presenting mainly sandy silt and silt, and indicating less sorting degree.The contents of SiO2 and Al 2O3 were the highest in the study area, and the average contents of other elements were generally less than 5%.With the exception of CaO, other constant elements were significant correlated with sediment particle size (p<0.01);Notably, the mean value of chemical index of alteration (CIA=58.50) of the vegetated UDPW were significantly higher than that of the SSW (CIA=50.17, p<0.05) and the flooding area, where is near bedrock mountains (CIA=52.00, p<0.05).Moreover, the CIA values were significant correlated with GRSP content (r=0.47, p<0.01). Conclusions:The surface sediments of the UDPW are mainly sand silt and silt, while, the surface sediments of the SSW are mainly silty sand and sandy silt due to the influence of tide and wave actions.The contents of CaO、Na2 O and K 2 O in the UDPW were higher than SSW.There were the high correlations between chemical element and grain size.The Na/K ratio and CIA index analyses showed that the sediments in the LHD wetlands were experienced three weathering stages, namely, unweathering, primary and moderate weathering.Moreover, the correlations between CIA values and GRSP content revealed that the important significant role of biological processes in the mineral weathering, and presumably the AMF have made an significant contribution to the nutrient retains in this region.
keywords:glomalin- related soil protein  major elements  weathering  Liaohe delta
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