检索结果-南通市图书馆

Sulfur mediated heavy metal biogeochemical cycles in coastal wetlands:From sediments,rhizosphere to vegetation

在线全文

学校读者我要写书评

暂无评论

Frontiers of Environmental Science & Engineering 2022年第8期16卷 165-182页

作者： Yueming Wu Zhanrui Leng Jian Li chongling yan Xinhong Wang Hui Jia Lingyun Chen Sai Zhang Xiaojun Zheng Daolin Du Institute of Environment and Ecology School of the Environment and Safety EngineeringJiangsu UniversityZhenjiang 212013China State Key Laboratory of Marine Environmental Science Xiamen UniversityXiamen 361102China Laboratory of Microbiota College of Life ScienceNorthwest Normal UniversityLanzhou 730070China Department of Physics and Electronic Engineering Jiangsu UniversityZhenjiang 212013China

The interactions and mechanisms between sulfur and heavy metals are a growing focus of biogeochemical studies in coastal *** issues underline the fate of heavy metals bound in sediments or released into the system through *** the fact that numerous published studies have suggested sulfur has a significant impact on the bioavailability of heavy metals accumulated in coastal wetlands,to date,no review article has systematically summarized those studies,particularly from the perspective of the three major components of wetland ecosystems(sediments,rhizosphere,and vegetation).The present review summarizes the studies published in the past four decades and highlights the major achievements in this *** and studies available thus far indicate that under anaerobic conditions,most of the potentially bioavailable heavy metals in coastal wetland sediments are fixed as precipitates,such as metal ***,fluctuations in physicochemical conditions may affect sulfur cycling,and hence,directly or indirectly lead to the conversion and migration of heavy *** the rhizosphere,root activities and microbes together affect the speciation and transformation of sulfur which in turn mediate the migration of heavy *** for plant tissues,tolerance to heavy metals is enhanced by sulfur-containing compounds via promoting a series of chelation and detoxification ***,to further understand the interactions between sulfur and heavy metals in coastal wetlands,some major future research directions are proposed.

关键词： Coastal wetland Heavy metal Sulfur Biogeochemical cycle

Mapping the scientific knowledge of glomalin-related soil protein with implications for carbon sequestration

在线全文

学校读者我要写书评

暂无评论

Ecosystem Health and Sustainability 2022年第1期8卷 324-341页

作者： Shanle Liu Qizhi Wang Lu Qian Binghuang Zhang Xiangwen Chen Hualong Hong Shengjie Wu Jingchun Liu chongling yan Haoliang Lu Ministry of Education Key Laboratory of the Coastal and Wetland EcosystemsXiamen UniversityFujianChina College of the Environment and Ecology Fujian Key Laboratory of Coastal Pollution Prevention and ControlXiamen UniversityFujianChina

Arbuscular mycorrhizal fungi(AMF)derived refractory organic matter,mainly in glomalinrelated soil protein(GRSP),stores globally significant amounts of carbon,attracting wide attention in response to climatic ***,there is no synthesis review has been done so far toreveal global research progresses on GRSP,especially its ecological role forclimate ***,we conducted a bibliometric analysis of the papers on GRSP research from 1998 to 2021,based on the Web of Science(WOS)Core *** collected a total of 634 papers and analyzed the characteristics of publication outputs in various countries and *** addition,keywords analysis was conducted to reveal the main researchdirections and hot trends in the field of *** confirmed that 1)the number of papers published per year has gradually increased since 2010,and increased sharply in 2019;2)the United States was the earliest country to conduct GRSP research,while Chinacurrently has the largest number of publications;3)relevant studies focus on the role from AMF and GRSP in soil health and plant health;4)the contribution of GRSP to soil carbon and its ecological function in mitigatingclimate change are the hotspot of *** benefits of GRSP have become a consensus,however,the nature of glomalin and the mechanisms of GRSP-associated benefits still need to *** an important soil recalcitrant organic carbon,further studies are need to elucidate the land-ocean biogeochemical processes of GRSP and its contribution to global blue carbon.

关键词： Carbon sequestration plant resistance heavy metal soil aggregate

Processes of coastal ecosystem carbon sequestration and approaches for increasing carbon sink

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Earth Sciences 2017年第5期60卷 809-820页

作者： ZHANG Yao ZHAO MeiXun CUI Qiu FAN Wei QI JiaGuo CHEN Ying ZHANG YongYu GAO KunShan FAN JingFeng WANG GuangYi yan chongling LU HaoLiang LUO YaWei ZHANG ZiLian ZHENG Qiang XIAO Wei JIAO NianZhi State Key Laboratory for Marine Environmental Science Xiamen 361100 China Key Laboratory of Marine Chemistry Theory and Technology Ministry of Education Ocean University of China Qingdao 266101 China Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 China Ocean College Zhejiang University Zhoushan 316021 China National Marine Environmental Monitoring Center Dalian 116023 China School of Environmental Science and Engineering Tianjin University Tianjin 300387 China College of the Environment and Ecology Xiamen University Xiamen 361100 China

The oceans are the largest carbon pools on Earth, and play the role of a "buffer" in climate change. Blue carbon, the carbon(mainly organic carbon) captured by marine ecosystems, is one of the important mechanisms of marine carbon *** carbon was initially recognized only in the form of visible coastal plant carbon sequestration. In fact, microorganisms(phytoplankton, bacteria, archaea, viruses, and protozoa), which did not receive much attention in the past, account for more than 90% of the total marine biomass and are the main contributors to blue carbon. Chinese coastal seas, equivalent to 1/3 of China's total land area, have a huge carbon sink potential needing urgently research and development. In this paper, we focus on the processes and mechanisms of coastal ocean's carbon sequestration and the approaches for increasing that sequestration. We discuss the structures of coastal ecosystems, the processes of carbon cycle, and the mechanisms of carbon sequestration. Using the evolution of coastal ocean's carbon sinks in sedimentary records over geologic times, we also discuss the possible effects of natural processes and anthropogenic activities on marine carbon sinks. Finally, we discuss the prospect of using carbon sequestration engineering for increasing coastal ocean's carbon storage capacity.

关键词： Coastal ocean's carbon sink Mechanism for increasing carbon sink Microorganism Climate change

在线全文

学校读者我要写书评

暂无评论

镉对桐花树幼苗生长及渗透调节的影响

生态环境 2006年第5期15卷 1003-1008页

作者：吴桂容严重玲厦门大学生命科学学院

采用土培方法研究不同质量分数Cd（0．5～50mg·kg^-1）对桐花树Aegiceras corniculatum幼苗的生长及渗透凋节的影响。结果表明：低质量分数Cd（***^-1）处理条件下，桐花树幼苗株高、植株鲜物质量均显著高于对照，根长、叶绿素质量分... 详细信息

采用土培方法研究不同质量分数Cd（0．5～50mg·kg^-1）对桐花树Aegiceras corniculatum幼苗的生长及渗透凋节的影响。结果表明：低质量分数Cd（***^-1）处理条件下，桐花树幼苗株高、植株鲜物质量均显著高于对照，根长、叶绿素质量分数则没有显著增加；高质量分数Cd（50mg·kg^-1）条件下，这些参数均显著降低，说明高质量分数Cd胁迫下，植株正常生长受到抑制。除了***^-1条件外，叶片淀粉质量分数变化趋势总体上是随着Cd的增加而下降。在5～50mg·kg^-1Cd处理下，渗透调节物质可溶性糖、可溶性蛋白质及脯氨酸均显著增加，与Cd质量分数存在正相关性。Cd胁迫下，渗透调节物质的积累作用是桐花树对Cd胁迫的主要响应过程，可溶性糖、可溶性蛋白及脯氨酸与可作为Cd对桐花树污染的检测指标。

关键词：桐花树幼苗 Cd 叶绿素淀粉可溶性糖可溶性蛋白脯氨酸

在线全文

学校读者我要写书评

暂无评论

镉胁迫下红树林沉积物中水溶性有机物的变化

应用与环境生物学报 2008年第2期14卷 198-201页

作者：叶彬彬严重玲厦门大学生命科学学院福建厦门361005

在温室条件下采用根箱法，研究了在不同浓度镉（Cd，0～50mg kg^-1）胁迫下红树植物秋茄幼苗生长的土壤中水溶性有机碳（DOC）和水溶性有机氮（DON）的浓度变化，研究表明，秋茄沉积物中DOC和DON含量随Cd胁迫浓度的增加出现不同程度先... 详细信息

在温室条件下采用根箱法，研究了在不同浓度镉（Cd，0～50mg kg^-1）胁迫下红树植物秋茄幼苗生长的土壤中水溶性有机碳（DOC）和水溶性有机氮（DON）的浓度变化，研究表明，秋茄沉积物中DOC和DON含量随Cd胁迫浓度的增加出现不同程度先降后升再降的趋势，DOC含量在土壤Cd处理浓度为10mg kg^-1和30mg kg^-1时分别达到谷值（0．134mg g^-1）和峰值（0．190mg g^-1），除了R5层（30mg kg^-1 Cd处理时DOC含量高于对照组），其他土层的对照组DOC含量均高于Cd处理组的DOC含量，DON含量在土壤Cd处理浓度为5mg kg^-1和20mg kg^-1时分别达到谷值（0．075mg g^-1和0．081mg g^-1），在10mg kg^-1和30mg kg^-1时分别达到峰值（0．117mg g^-1和0．138mg g^-1），这表明沉积物中的DOC和DON在低浓度的Cd胁迫下可与Cd相互作用，降低Cd的有效性，反映秋茄对低浓度的Cd有一定的抵抗能力，高浓度的Cd胁迫可能刺激秋茄根系分泌和改变土壤微环境，与非根际层土壤相比，根际层的DOC和DON含量较高。

关键词：镉水溶性有机碳水溶性有机氮红树林沉积物根际层

在线全文

学校读者我要写书评

暂无评论

镉锌复合胁迫对秋茄幼苗渗透调节物质的影响

应用与环境生物学报 2009年第3期15卷 308-312页

作者：郭晓音严重玲叶彬彬厦门大学生命科学学院厦门361005

通过土壤盆栽研究了不同浓度镉(CCd,0、2.5、50mgkg-1)、锌(ZZn,0、100、500mgkg-1)胁迫下红树植物秋茄的幼苗体内可溶性蛋白、可溶性糖、脯氨酸、有机酸含量的变化.结果表明,Cd、Zn单一处理下,秋茄体内渗透调节物质含量随重金属浓度升... 详细信息

通过土壤盆栽研究了不同浓度镉(CCd,0、2.5、50mgkg-1)、锌(ZZn,0、100、500mgkg-1)胁迫下红树植物秋茄的幼苗体内可溶性蛋白、可溶性糖、脯氨酸、有机酸含量的变化.结果表明,Cd、Zn单一处理下,秋茄体内渗透调节物质含量随重金属浓度升高而增加;Cd、Zn复合处理对秋茄体内可溶性蛋白质含量的复合效应主要表现为协同作用:Cd的加入减弱Zn对秋茄体内可溶性糖含量的刺激作用,低Cd浓度处理下Zn的加入导致可溶性糖含量增加,而高Cd浓度处理下Zn的加入反而降低其含量.低浓度Zn(或Cd)的加入与土壤中Cd(或Zn)发生拮抗作用,秋茄体内脯氨酸、有机酸含量下降;高浓度Zn(或Cd)的加入与土壤中的Cd(或Zn)发生协同作用,导致渗透调节物质脯氨酸、有机酸的积累量增加,从而缓解高浓度重金属的胁迫.植物组织或部位不同,Cd与Zn浓度和比例不同,Cd、Zn之间的复合作用存在一定的差异.

关键词：红树秋茄 Cd—Zn复合渗透调节物质

S对As胁迫下桐花树幼苗巯基化合物含量的影响

在线全文

学校读者我要写书评

暂无评论

厦门大学学报（自然科学版） 2016年第1期55卷 55-59页

作者：吴桂容洪华龙严重玲滨海湿地生态系统教育部重点实验室(厦门大学) 福建厦门361102 贺州学院化学与生物工程学院广西贺州542800

本研究以红树植物桐花树(Aegiceras corniculatum(L.)Blanco)为实验材料,通过栽培试验研究硫(S)对砷(As)胁迫下桐花树幼苗巯基化合物含量的影响.As含量设为-As(0mg/kg)和+As(60mg/kg)2个处理,而S含量设为-S(0g/kg)、+S(1g/kg)和+HS(2g/kg)3个处理.结果表明:在-As处理组中,桐花树幼苗根、叶中非蛋白巯基(NPT)、谷胱甘肽(GSH)和植物络合素(PCs)等巯基化合物的含量均随着S的施入而有显著升高(p<0.05);+As处理组桐花树幼苗根、叶中NPT和PCs含量在-S、+S、+HS处理下均要显著高于-As处理组(p<0.05);在+As处理组中,桐花树幼苗根、叶中的NPT和叶中PCs含量随着S的施入显著升高(p<0.05),且根中PCs含量与As含量呈显著正相关(r=0.82,p<0.05).上述结果说明As的胁迫和S的施入均能促进巯基化合物的合成,显著提高As胁迫下的桐花树幼苗根、叶中巯基化合物特别是PCs的含量.S在红树植物As抗性中具有重要作用,在As污染下的红树林湿地中施入S可以通过巯基化合物代谢提高红树植物对As的抗性.

关键词：硫砷桐花树巯基化合物

在线全文

学校读者我要写书评

暂无评论

菲对黑麦草根系几种低分子量分泌物的影响

生态环境 2008年第2期17卷 576-579页

作者：谢明吉严重玲叶菁厦门大学生命科学学院污染生态学实验室福建厦门361005

有机污染的植物修复过程与植物根系分泌密切相关,近年来,对于持久性有机污染多环芳烃的植物修复研究得到了很大发展,但对于多环芳烃污染下植物根系分泌物的研究很少。该实验以多年生黑麦草(Lolium perenne L.)为供试材料,以营养液栽培... 详细信息

有机污染的植物修复过程与植物根系分泌密切相关,近年来,对于持久性有机污染多环芳烃的植物修复研究得到了很大发展,但对于多环芳烃污染下植物根系分泌物的研究很少。该实验以多年生黑麦草(Lolium perenne L.)为供试材料,以营养液栽培方式研究了在多环芳烃菲处理下,黑麦草根系对几种低分子量有机物的分泌情况。研究结果显示,黑麦草根系分泌有机酸、总糖以及氨基酸的量都随菲质量浓度的上升而变化。黑麦草根系分泌的低分子有机酸主要为草酸,在菲处理下,低分子有机酸的组成无明显变化,但含量随菲质量浓度上升而提高(由对照时的2.33mg·g-1FW升高至8mg·L-1时的4.75mg·g-1FW);总糖和氨基酸含量均随菲质量浓度上升出现先升高后下降的趋势,但是最高值出现的菲质量浓度不同,从含量上来看,有机酸是黑麦草根系低分子量分泌物的主要部分。结合其它研究结果分析,植物分泌的有机酸可能在加速多环芳烃清除中发挥了重要作用。

关键词：菲根系分泌物有机酸糖类氨基酸

Characteristics of rare earth elements in soils in Guizhou carbonate region

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1999年第S2期44卷 115-116页

作者： yan chongling~(1,2), HONG Yetang~1, WANG Shijie~1, FU Shunzhen~2, ZHU Keyong~2 and WU Shanqi~2 1. State Key Laboratory of Environmental Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China 2. Guizhou Institute of Environmental Protection, Guiyang 550002, China State Key Laboratory of Environmental Geochemistry Chinese Academy of Sciences Guiyang 550002 China Guizhou Institute of Environmental Protection Guiyang 550002 China

IN recent years, rare earth element (REE) being used in agriculture has gained greater progress and madeus reach some common views. The centent of REE (especially soluble REE) in soils has significantcorrelation with that of REE plant absorbed from soil. Therefore, it is very necessary to clarify contentvariation and background values of REE (especially soluble REE ) from the angles of relation of supplyand demand between soil and plants, for reasonably using REE and formulating relevant health standardin the region, avoiding excessive using REE and taking up soil environmental capacity of REE to result insoil or water-body polluted and sometime for researching rock weathering, soil-forming process and soilclassification in the region. This note deals with characteristics of content and distribution of REE andsoluble REE in soils of Guizhou carbonate region.

关键词： rare earth element soil, Carbonate area, Guizhou.