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1.
CHINESEGEOGRAPHICALSCIENCEisacomprehensivegeographicaljournalpublishedinEnglishinChina.ItisundertakenbytheChineseAcademyofSciences,sponsoredbyChangchuninstituteofGeography,theChineseAcademyofSciences,editedbytheEditorialDepartmentofthejournal,andpublishedbySciencePress,Beijing,China.CHINESEGEOGRAPHICALSCIENCEcarriesoriginalresearchpapers,reviewarticlesandcasereportsconcernedwithphysicalgeographyanditssub-disciplines(landscapeecology,environmentalgeography,climatology,…  相似文献   

2.
平阴县浅层地下水调查采样密度为1点/16km2,分析测试27项指标的含量变化规律后,认为调查区浅层地下水中除K,Mn,NO-2等指标含量变化较大,局部富集外,其他指标含量变化小,在浅层地下水中分布较均匀.选择As,Ba,Be,Cd,Co,Cu,Fe,Hg,Mn,Mo,Ni,Pb,Se,Zn,F-,Cl-,Cr6+,NO-2,COD,pH等20项指标,按<地下水质量标准>对浅层地下水环境质量进行的单因子和综合评价,结果显示较好级以上者达88.4%,而较差级仅占11.6%,无极差级分布,调查区内浅层地下水环境质量状况良好.  相似文献   

3.
《山地科学学报》2013,(6):1137-1153
Abeliotis, Konstadinos Department of Home Economics and Ecology, Harokopio University, Greece Abella, Scott R. Department of Environmental and Occupational Health, University of Nevada Las Vegas, USA Aceves-Quesada, Jos6 Fernando Instituto de Geografia UNAM, Mexico Acreman, Mike Centre for Ecology and Hydrology, Wallingford, Oxfordshire, UK Adhikari, Yagya Geobotany, Ecology and ecosystem management (Technische Universitat M0nchen), Germany Ahmad, Shahbaz Indian Institute of Forest Management, India Ahmed, Sohel J. Urban and Rural Planning Discipline, Khulna University, Bangladesh  相似文献   

4.
Marine Yeasts and Their Applications in Mariculture   总被引:4,自引:2,他引:2  
1Introduction Becauseyeastscanproducemanybioactivesubstan ces,suchasprotein,aminoacids,vitamin,polysac charide,fattyacid,phospholipid,polyamine,astax anthin,βcarotenoid,trehalose,glutathione,superox idedismutase,chitinase,amylase,phytase,protease,killert…  相似文献   

5.
1 Submissionofpaper Authorsarerequestedtosubmitoriginalpapersthathavenotbeenpublishedpreviouslyandarenotunderconsiderationfor publicationelsewhereinthesameform ,inEnglishoranyotherlanguages ,withoutthewrittenconsentofthepublisher. PublicationsofthisJournalcoverOceanSciencesandEngineering ,MarineEnvironmentSciencesandEngineering ,MarineMeteorology ,FisherySciences ,MarineRemoteSensing ,MarineInformationTechno logy ,MarineManagement ,Limnology ,etc. Thetypesof papersinclude :Researc…  相似文献   

6.
招平断裂带是胶西北地区重要的金矿成矿带,该带上已发现多个特大型、大型、中型金矿床,金矿床的成矿具有多期、多阶段叠加的特点。该文对招平断裂带中段深部构造地球化学特征进行了研究,成矿元素异常组合为Au,Ag,Cu,Pb,Zn,As,Sb,Bi,B,Hg,Mo,As,Sb,Hg为头晕指示元素;W,Bi,Mo,Sn为尾晕指示元素;近矿指示元素为Au,Ag,Cu,Pb,Zn。据此建立了构造地球化学找矿模型,确定了构造地球化学找矿预测标志,为深部找矿提供了地球化学依据。  相似文献   

7.
焦家金矿深部原生晕地球化学特征   总被引:1,自引:0,他引:1       下载免费PDF全文
焦家金矿是胶西北地区典型的金矿床,该区成矿具有多期、多阶段叠加共同作用的特点。通过对典型剖面上钻孔不同部位岩性样品的微量元素测试分析,运用数学地质分析方法,对焦家金矿床深部地球化学特征进行了研究,得出深部成矿微量元素特征组合为Au,Ag,Cu,Pb,Zn,As,Sb,Bi,Hg,W,Mo,Sn;原生晕轴向分带序列为:Hg,As,Sb(矿头晕)→Au,Ag,Cu,Pb,Zn,Bi,Sn(矿中晕)→W,Mo(矿尾晕)。由此建立了地球化学原生晕异常模型,并总结了地球化学找矿标志,为深部找矿提供依据。  相似文献   

8.
DISTRIBUTION OF THE MAIN CROP GERMPLASM RESOURCES IN CHINA   总被引:1,自引:0,他引:1  
Cropgermplasmresourcesaretheindispensablematerialbaseforcropbreedingandagriculturalproduction.Theresearchondistributionofcropgermplasmr~urcesisofgreatimportanceinstudyingonorigin,evolutionandclassificationofcrops,expeditingandcollectinggermplasm,ascertainingofcentersofdiversity,protectinggermplasmr~urcesandmakingagriculturalproductiondivision.Since1949,researchesofexploration,collection,preservation,cha-racterizationandevaluationofcropgermplasmresourceshavebeendoneinChina.Atpresent,thenational…  相似文献   

9.
TheQuaternalypaleo--environmentoftheLushan,HuangshanandTianmumountainsisasignificantacademicproblemtowhichmuchattentionhasbeenpaidbymanyresearchersingeosciencecircle.Manyscholarshavestudiedtheproblemandgotalotofachivementsoverthepastyears(Lee,1933;Lee,1936;Lee,1947;Ren,1953;Huang,1963;Li,1974;Shi,1989).HOWever,identicalviewsandconclusionshavenotbeenreachedyetuptillnow,especiallylackingofcomprehensivestudyforsedimentsintheseregions.Inrecentyears,applyingsedimentalcomprehensiveindexgotfromv…  相似文献   

10.
根据1:5万水系沉积物地球化学测量工作成果,对采集的3138件样品中Cu,Pb,Zn,Au,Ag,W,Sn,Mo,Bi,As,Sb,Cr,Co,Ni共14种元素进行分析测试。研究结果表明,Au,Ag,Cu,Ni是区内最有找矿潜力的成矿指标元素;聚类分析所划分的4类元素簇群,主要与中低温成矿元素、阿尔金南缘断裂、蛇绿混杂岩相关,通过因子分析得到Ni-Cr-As-Sb-Cu-Bi,W-Bi-As-Cu,Bi-W,As,Ag-Zn-Pb,Cu-Bi-As共6类元素组合。其中Cr,Ni,Sb,Cu,As,Bi组合反映出与低温热液活动和断裂构造活动有关;Cr,Ni元素的富集主要与研究区内叶桑岗蛇绿混杂岩带关系密切;Ag,Pb,Zn组合则与地层低温热液元素局部富集和断裂构造活动密切相关。在综合异常分析和查证的基础上,结合区域成矿地质条件、区内矿产地质特征,圈定、划分出2个找矿远景区,并指出了研究区内以金、铜、银、镍为主要优势矿种,铅、锌为潜力矿种。  相似文献   

11.
ImODUonONRespirationandexereionareimPortantaspeCtSofbioenergCties.TheaspthetionInetabolismandexcretionofscallopswerestudiedbydifferentmwherspeayne,l97l,BayneandNewell,l983,Bricelj,l987,MackayandShumway,l98O,Mdriky,l973,FujiandHashizume,l974,Madrinald,l988,ShumwayCtal.,l988,Vahl,l972,l978).Themetabolicrateofbivalvesisinfluentalbyanumberofvariables,indudingternperature,bodysize,oxygenimsion,foodconantfation,reproductvestate,aCtivity1ev-elandphySiologicalcondition.Themetabolicrateofscal…  相似文献   

12.
通过对济阳县生态地球化学调查研究,该区受成土母质来源、土壤类型、地形地貌及其理化性质等因素影响,土壤元素全量、有效量及有效度表现为:低平洼地土壤中K,P,N,Se,Mn,Fe,Zn,Cu和Mo全量较高,P,N,Se和Cu有效量较高,显示为低平洼地为黏质成分的沉积成因特点;而决口扇形地区土壤Cu,Mo,N,Zn,B有效量和全量均偏低。富含有机质,且pH相对较低的潮土中Se,Cu,Mo和B等元素有效度较高,贫有机质、pH相对较高的草甸风沙土中N,Fe,Cu,Mo,B和S等元素有效量较低,但K有效量和有效度均较高。统计分析表明,土壤中K,P,N,S和Cu等元素全量与有效量间具显著正相关性,表明全量是有效量的重要影响控制因素;有机质含量与K,P,Zn,Cu和B有效度间为显著正相关,说明有机质较高有利于土壤元素活化;Fe,P,S,Zn,B和Cu有效度与pH值为显著负相关,表明土壤酸性增强会增加这类元素的生物有效性。  相似文献   

13.
《地球科学与环境学报》2014,(1):F0003-F0003
<正>2013年中,下列专家不辞辛苦先后为《地球科学与环境学报》精心审稿,为确保和提高本刊学术质量付出了辛勤劳动,在此,特向各位专家表示诚挚感谢!(各单位中专家以审稿先后为序)北京大学:朱永峰,陈斌,陈衍景北京师范大学:余先川,黄崇福成都理工大学:许模,刘树根,田景春,郑荣才,许强复旦大学:戴星翼,董文博吉林大学:苏小四南京大学:舒良树,邱检生,倪培,林春明南开大学:鞠美庭武汉大学:林爱文,邵振峰,李霖,黄声享西北大学:任战利,华洪  相似文献   

14.
自然的情怀     
自然,是高远空灵之天,是巍峨挺拔之山,是清澈灵动之水,是苍翠欲滴之林,是肥沃广阔之田,是碧波微漾之湖,是波澜壮阔之海,是离离原上之草,是神秘瑰丽之天下万象,是生生不息之万物生灵。自然之山有千峰峥嵘万壑竞秀,有奇峰怪石云海飞瀑,有烟雾缭绕空灵清秀,亦有连绵逶迤蜿蜒起伏大气磅礴云蒸霞蔚。山的胸怀,山的风骨,山的品格,山的内涵,山的原则,教会我们做事要像山一样,虚怀若谷,方能汇集百川壁立千仞高耸入云.  相似文献   

15.
春种夏管秋收冬藏,年末岁尾,盘点算账,人人写总结,部门算总账。日前,扶沟县国土资源局在年终总结时脱旧规,除陋习,亮利剑,出鲜招,保真保简保干保实,收效甚好。在学习贯彻落实习近平总书记系列重要讲话精神,纠正"四风"、深入开展党的群众路线教育实践活动中,该局在今年的工作总结中一改过去"人人写总结,领导看总结,总结写成摞,收效不显著"的做法,大胆改革,调整思路,更新观念,创新方式,采取"缩水保真、脱靴保简、翻晒保干、挑刺保实"的做法,真正使总结文如其人、表里一致,充分  相似文献   

16.
做好地籍工作,不管是开展初始地籍调查登记,还是日常地籍管理,有很多问题需要解决,但首要问题就是钱的问题,那么,南京是如何解决的呢? 南京地籍管理处(现改为南京市国土资源管理信息中心)于1990年12月7日成立后,遇到的困难和问题,难以言表,但至关重要的问题,还是钱的问题。面临这个问题,大家有不同的见解,部分同志认为,我们是刚刚成立不久的新事业单位,老老实实按照国家规定,执行事业单位全额拨款的模式,先保住职工工资,待条件成熟时,再考虑开展工作。另一部分人员认为,政府给多少钱,我们就办多少事,不给钱,工作开展不起来,即使有责任,也…  相似文献   

17.
Duringthefloodperiodof1998,someregionsofChinasufferedseriousfloodingandwaterlogging.EspeciallyintheChangjiangRiver,thewholebasinfloodonceemergedin1954occurredagain,andthemostseverefloodinthehistoryalsoemergedintheSonghuaRiverandtheNenjiangRiver,whicharousedmuchattentionacrossthewholecountry.Accordingtoincompletestatistics,till22ndofAugust,29provinces,autonomousregionsandmunicipalitieshadbeenaffectedbythefloodsinvaryingdegrees.ZI.2millionhaoflandwereinundated,223millionPeOPlewereaffeCted,3…  相似文献   

18.
1INTRODUCTIONOneoftheeffectsofglobalwarmingisthatprecipita-tionhasincreasedoversomeareasintheworld,andthegaugedataofprecipitation (excludingAntarctica)showthatglobalprecipitationhasincreasedslightlybyabout9mmforthe20thcentury, whichwas verysmallcomparedwiththeinterannualandmul-ti-decadalvariability(NEWetal.,2001).Butregion-ally,thereexisted agreatdealofdifferences,suchasinmostpartsofAfrica, Amazon,westernSouthAmerica,theweatherhasbecomedrier,andinmostpartsofEuropeandCanada,thereexisted…  相似文献   

19.
ImOUocrON0verevoluti0narytirne,intetspeCiliccomPctitioncanresultincharactedisplacementSthatfadiitateresourcepartitioningamongspedesffeper,l985,Wilirarnanayake,l99O).Fisharenotablyopportunisticintheirfeding,toknowWhereandhowtheybowilloftenprovidemoreinsightintotheirerelogythansbolyknowingtheactUalcomPonentSoftheirdiet(Motta,l988,HUmPhrieS,l993).ArmrdinglymorphologicalcomParisonsamongcoxiccutwspchprovidemportantinfonnationnotonlytosySteInatistsfaedwithtaxonondcprobbo,butaIsot0erelogistS…  相似文献   

20.
The paper presents results of palynological studies of the coal-bearing Carboniferous in Central Ka-zakhstan.A quantitative dynamics of major genera of miospores reflects an overall succession of the Carbonifer-ous miospore assemblages.Viséan Serpukhovian assemblages are dominanted by Lophozonotriletes fuscatus,Ac-anthozonotriletes cristifer,A.inclusus,Punctatisporites glabratus,Crassispora ignorata,C.scrupea,Cyclobacu-lisporites trichacanthus,Lycospora breviapiculata,L.echinata and Vallatisporites decrescens.Rare Punctatis-porites bertschoguriensis,Stenozonotriletes marginellus,Vallatisporites appilicatus,Verrucosisporites scrobiculatus,Reticulatisporites cancellatus,Granulatisporites arcuatus are recorded,which are not found in assemblages from overlying sediments.Bashkirian--Moscovian assemblages are dominated by Lycospora subtriquetra,L.pusilla,Vallatisporites ciliaris,Apiculatisporis mollis,Cyclogranisporites testiculatus,Calamospora microrugosa,Schopfi-pollenites principalis,Psilohymena psiloptera,Florinites grandis and Granulatisporites piroformis miospores.Cris-tatisporites latispinus,Angulisporites didymus,Thymospora obscura and Torispora securis are also present,as well as single Apiculatisporis curvispinus,Raistrickia inordinata,Marsupipollenites retroflexus,Entylissa caperata,Potonieisporites grandis and Cordaitina sp.A similar succession of miospore assemblages is recorded in the Carboniferous deposits of Europe and North America,which allows carrying out correlations,despite an endemic characters of many species of Paleozoic miospores from the coal-bearing Carboniferous of the Kazakh-stan Province in the Euramerian Paleofloristic Region.  相似文献   

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