山口红树林保护区海域水环境质量评价分析

文章运用单项因子评价法、有机污染综合指数法、邹景忠法、综合污染评级法(重金属)、内梅罗指数法对2019年9月、2020年5月广西山口红树林生态国家级自然保护区(本文简称山口红树林保护区)海域的水环境质量状况进行评价分析。结果表明,山口红树林保护区水环境整体处于轻度污染状态,东边英罗港海域水环境质量较西边丹兜海海域略好。     

吉林市某冶炼厂土壤重金属污染风险评价

为了解研究区土壤重金属环境质量状况,对土壤进行样品采集和测试。采用单因子污染指数法和内梅罗（Nemerow）综合污染指数法,依据《土壤环境质量标准》（GB15618--2008）第二级标准对土壤中Ni和Cd的污染状况进行环境风险评价。结果表明, Ni的污染范围主要在距中心点3000 m范围内,超标点共15个,大部分超标点为轻微污染或轻度污染。个别点存在重度污染和综合污染现象。此外,对土壤重金属超标点位的玉米作物进行测试分析,发现其Ni和Cd含量均不超标,说明土壤的污染程度对于当地的玉米作物没有影响。     

烟台东部高新技术海洋经济新区地表土壤重金属污染评价

近年来,随着烟台东部高新技术海洋经济新区的快速发展,城市地表土壤重金属污染状况愈渐严重,以烟台东部高新技术海洋经济新区范围作为研究区,在地表深度1 m以内的表土(0~20 cm)和心土(20~40 cm),取土壤样205件进行分析测试,采用单项污染指数法和内梅罗综合污染指数法,对研究区进行了地表土壤重金属污染评价,7种重金属元素单项污染程度依次为PbCuCdHgCrNiAs;根据内梅罗综合污染指数法评价研究区土壤环境质量,认为整体较好,大部分属于清洁区和尚清洁区;区内地表土壤重金属污染主要分布于芝罘区、莱山区西北以及解甲庄镇西南工业集中地区,其中Pb,Cu,Cd,Hg 4种元素为造成研究区地表土壤重金属元素污染的主要污染元素,Ni,Cr为造成区内地表重金属污染的次要因素,As未发现污染,与重金属元素单项污染程度相呼应。     

潍坊市城区地下水水化学特征及质量评价

为详细了解和掌握潍坊市城区地下水化学特征及质量状况,该文在潍坊市城市地质调查的基础上,共采集地下水样品400件,并进行了样品分析测试。基于检测结果,选用单因子评价法和综合评价法对地下水质量进行了综合评价研究。结果表明,研究区北部为海(咸)水入侵区,水质极差,面积827.04 km~2,中部为主城区,受人类工农业活动影响,水质较差,面积911.52 km~2,南部水质较好,面积670.46 km~2,良好区和优良区在区内零星分布,面积52.64 km~2;研究区地下水化学类型自北向南呈带状分布,北部为Cl-Na型水,向南过渡为Cl·HCO_3-Ca·Mg型水,最后变为HCO_3-Ca型水。     

威海市近海海域表层沉积物环境质量评价

对威海近海海域127站位表层沉积物中的重金属元素进行分析测试,采用单因子污染指数法、综合污染指数法、超标分类法和潜在生态危害法等多种评价方法对研究区环境质量进行评价。认为研究区海底表层沉积物的单因子污染物指数偏低,只有Cu和Cr两种重金属出现一类沉积物质量超标情况;海底表层沉积物环境质量在整体上处于清洁和尚清洁状态,个别站位处于允许状态;污染类型主要以Ⅰ类、Ⅱ类为主,含少量Ⅲ类,Ⅱ类又分为Ⅱ1Cr和Ⅱ2Cu两个污染亚类,Ⅲ类又分为Ⅲ1Cr-Cu和Ⅲ2Cu-Cr两个污染亚类;各种重金属的生态危害程度均低。     

基于土壤地球化学分区的重金属污染风险评价——以山东省郯城县某镇为例

以郯城县某镇生态地球化学调查取得的土壤地球化学数据为基础,利用因子分析法将研究区划分为3个土壤地球化学分区,10个土壤地球化学亚区。每个土壤地球化学亚区的元素间彼此存在相关性,而重金属元素的含量往往决定了该土壤地球化学分区或亚区的污染状况。首次尝试以土壤地球化学分区为评价单元,对郯城县某镇耕地土壤中8项重金属污染状况进行了评价。结果表明,该区耕地土壤重金属元素含量属弱至低等变异程度,均一化程度较高,重金属污染风险低,但个别土壤分区存在Hg,Ni,Cr含量分异程度大,点位高于背景比例偏高的现象;单项污染指数中Ni,Cr的值相对偏高,表明存在单个因子人为污染的现象;内梅罗污染指数指示I-3亚区为该镇最高,存在一定的污染隐患;地累积指数指示了I-3亚区中Ni、II-1亚区中Hg的值均>1,为轻微污染等级。此次评价工作也表明,基于土壤地球化学分区的耕地土壤重金属污染评价结果与土壤环境质量评价图件反映的信息较为吻合。     

大汶河流域中游地下水水化学特征及水质评价

通过对大汶河流域中游地区40件地下水样品进行测试分析,运用统计分析法分析了水化学指标特征,采用单因子评价法、模糊综合评价法进行了地下水水质评价。结果表明:1.地下水中pH值的含量相对稳定,K~+,Fe,Mn,NH~+_4,NO~-_2,Pb空间变异性较强;地下水中主要阳离子是Na~+,Ca~(2+),主要阴离子是SO■,Cl~-,NO~-_3。2.TDS、总硬度含量呈现由研究区东部柴汶河、牟汶河上游地区至西部大汶河下游河谷平原区,由东南部低山丘陵区至西北部山间沟谷地区逐渐增大的趋势。3.水质评价结果显示,大汶河流域中游地区地下水质量整体较差,多为Ⅳ类水和Ⅴ类水,无法满足当地居民的生活饮用水要求。研究成果为流域内水资源的合理开发利用提供了理论依据,为将来水资源保护提供了基础资料。     

青岛城区土壤重金属现状评价及趋势预测

通过对青岛城区土壤进行调查取样,运用单因子评价和内梅罗指数法对青岛表层土壤8种重金属元素(As,Cd,Cr,Cu,Ni,Hg,Pb和Zn)的测试结果进行评价,查明了土壤环境质量现状及其污染程度:青岛市土壤环境质量总体较高,绝大部分地区土壤环境保持在清洁水平;污染区域以孤岛状零星分布于青岛市内,区内胶州湾入海口污染指数偏高,很可能是由于河流上游污水排放导致的。通过对未来20年城区土壤在大气降尘影响下重金属Cd,Zn的累积情况进行了预测,结果表明:随着时间的推移,土壤有害元素含量会有所增高。其中,大气降尘中Zn元素对青岛市区土壤影响明显。该研究对于正确认识青岛区域地球化学特征和地质环境具有一定的指导意义。     

Chemical characteristics and influencing factors of snow in eastern Qilian Mountains,China

As an important indicator of environmental and climate changes, snow chemical properties can be used to reflect microcosmic changes, large-scale environmental and climate changes. 174 groups of snow samples were collected from four different rivers, Jinta river, Sishui river, Binggou river, and Nancha river, in the eastern Qilian Mountains in west China from May 2014 to October 2017. The characteristics of inorganic ions, Ca~(2+), Mg~(2+), Na~+, K~+, Cl–, NO_3~–, HCO_3~–, and SO_2~–, in the samples were analyzed by Dionex-600 and Dionex-3000 ion chromatograph. The results show that Ca~(2+) is the main cation, while HCO_3~– is the main anion; the ion concentration of snow is higher than that of rain. After careful analysis, we draw the conclusion that due to the controlling of the westerly wind, the atmosphere of the Qilian Mountains is dry with high dust content in winter and spring, which makes the ions in the snow mainly derive from the weathering of carbonate rock and sulfate rock. The ions in snow cover mainly come from land-sourced dust, while less contribution is from marine sources and human activities.     

渭河干流浅层地下水与地表水中重金属Cd污染特征及风险评价

为了解渭河流域水体重金属污染现状及健康危害风险,沿渭河干流采集浅层地下水和地表水水样,采用单因子指数法和美国环境保护署(USEPA)健康风险评价模型揭示了水体中重金属Cd污染现状和健康风险。结果表明:2018年渭河干流地下水和地表水中Cd浓度分别为426.40~1104.27 ng·L^-1和224.70~1154.12 ng·L^-1;参照《地下水质量标准》(GB/T 14848-2017)和《地表水环境质量标准》(GB 3838-2002)得知,地下水和地表水中Cd浓度均在GB/T 14848—2017和GB 3838-2002Ⅰ~Ⅲ类标准限值内;水体中Cd浓度表现出明显的空间分异性,沿河流流向均表现为逐渐增加的趋势;地下水与地表水中Cd浓度高值区相一致,即集中分布于陕西省兴平市和渭南市临渭区;由水体中Cd浓度单因子指数评价结果可知,渭河干流水体中Cd污染属于清洁水平;沿河流流向,渭河中游和下游水体中Cd浓度单因子污染指数远高于上游;水体中重金属Cd对成人和儿童产生的致癌风险分别为(1.48~2.05)×10^-4和(1.84~2.55)×10^-4,说明水体中Cd对人体可能会产生一定的健康风险。     

Thermohaline structure inhomogeneity associated with polynia at the northern margin of Emery Ice-shelf

Based on the hydrographic data in austral summer during the 22nd Antarctic Expedition of China(2005/2006),some features can be found about the northern margin of Emery ice shelf as follows.The heat content in the surface layer(0-50 m) at the eastern end and the western end of the ice-shelf margin is much higher than that at the middle.The upper mixing-layer depth and the seasonal thermocline depth at the middle of the ice-shelf northern margin are much shallower than those at the both ends.However there is much less difference between the middle and the ends in the bottom layer.The remote sensing photos show that the inhomogeneity in the surface-layer water is closely related to the spatial distribution of the floes and polynia in the area.     

Phylogenetic analysis of cultivable bacteria isolated from Arctic sea-ice

Phylogenetic analysis based on 16S rDNA of 8 strains of cultivable bacteria isolated from Arctic sea-ice was studied.The results showed that strain BJ1 belonged to genus Planococcus,which was a genus of low mole percent G C gram-positive bacteria;strain BJ6 belonged to genus Burkholderia of β-proteobacteria and the rest 6 strain all belonged to γ-proteobacteria,of which strain BJ8 was a species of Pseudoalteromonas,strain BJ2-BJ5 and BJ7 were members of genus Psychrobacter.Phylogenetic analysis also indicated that bacteria of genus Psychrobacter of the isolates formed a relatively independent phylogenetic cluster in comparison with other bacteria belonged to genus Psychrobacter.     

Information for authors

正1 Aims and Scope Advances in Polar Science(APS)is an international,peer-reviewed journal jointly sponsored by the Polar Research Institute of China and the Chinese Arctic and Antarctic Administration.APS is a comprchensive academic journal dedicated to presentation of multi-disciplinary achievements in Arctic and Antarctic expeditions and research.Its primary purpose is to publish achievements in fundamental research,applied     

Advances in Polar Science CONTENTS(Volume 25,2014)

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Guide to Authors： Journal of Mountain Science

<正>AIMS AND SCOPE(Editorial Policy)The Journal of Mountain Science(JMS)is devoted to mountains and their surrounding lowlands-ecoregions of particular global importance,with a particular emphasis on the important highlands/mountains in the world,such as the Tibetan Plateau,the Himalayas,the Alps,the Andes,the Rockies and many other mountain ranges of our planet.     

Journal of Mountain Science(JMS)

<正>The Journal of Mountain Science(JMS),founded in2004,is an international English-language journal on mountain sciences.JMS is supervised by the Chinese Academy of Sciences(CAS),sponsored by the Chengdu Institute of Mountain Hazards and Environment,CAS,published by Science Press China,and distributed by Springer exclusively throughout the world(excluding Mainland China).The JMS is published bimonthly,fulltexted in SpringerLink and CNKI,indexed/abstracted by     

Relationship of Arctic sea ice and Northern Hemispheric 500 hPa Polar vortices

Using the NCEP/NCAR reanalysis monthly 500 hPa height data on a 2.5 latitude-longitude grid and 1°×1° sea ice data,the polar vortex area,intensity index and arctic sea ice area index are calculated respectively,and the meridional distribution,period variation and the abrupts in the long range trend are analyzed to study their relationship.The results show that the meridional distribution of sea ice and polar vortex h-ave distinctive difference,the relative positions of them are different in the eastern and western hemispheres,and exept they have periods of 4 months,quasi half year,quasi year,4-5 years and 10 years commonly,and each of them has its own respective variation as well.The sea ice area is decreasing apparently since 1980's,so is the polar vortex area,but their abrupt changge time are different totally.The area of sea ice and polar vortex has prominent positive correlation,but the relationship of sea ice intensity,polar vortex intensity,polar vortex area is complicated.     

Author Index for Journal of Mountain Science Volume 11,2014,pp 1-1656

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Information for Authors

<正>The Journal of Ocean University of China(Oceanic and Coastal Sea Research)is a comprehensive academic quarterly sponsored by the Ocean University of China,published one volume per year.This journal is devoted to the publication of the theoretical and applied research