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1.
布站监测了城月河──雷州湾30多种水质化学要素,探讨各化学要素的变化规律,求出多种化学要素的回归方程,计算不同河段平均每kmCODMn自净百分率,得出CODMn随流程的回归方程和距离自净速率常数,分析、解释了多种化学要素间的相关关系及自净作用原因和机理。  相似文献   

2.
在广东茂名地区二叠系地层中存在与地层整合产出的层状硅质岩。硅质岩富Fe、Mn,相对贫Al;富集As、Sb、Bi,Ga等微量元素;稀土元素总量低,Ce弱负异常,重稀土相对富集;δ30Si值变化范围为0.0003~0.0007,δ18O值变化范围为0.0148~0.0223,均具热水沉积硅质岩的地球化学特征。在Al-Fe-Mn和Fe-Mn-(Ni+Co+Cu)三角图上,本区硅质岩均属于典型的热水沉积硅质岩。硅质岩MnO/TiO2比值、δCe值和δ30Si值分析表明,本区展状硅质岩主要是在大陆边缘的浅海环境下沉积的。  相似文献   

3.
(刘希林)DIFASTERSANDREGIONALRISKSOFDEBRISFLOWINZHAOTONGPREFECTURE,YUNNANPROVINCE,CHINA¥LiuXilin(InstituteofMountainDisasterandEn...  相似文献   

4.
THECLIMATICCONDITIONSOFPOLAR-TYPEGLACIERSDEVELOPMENTINCHINA¥HuangMaohuan(黄茂桓)(LanzhouInstituteofGlaciologyandGeocryology,theC...  相似文献   

5.
DIRECTOROFEDITORIALCOMMITTEE:Tang WenquanDEPRTYDIRECTORSOFEDITORIALCOMITTEE:ZhuAuqing,QianZhu,ZhangYongshan,YangShufengMEMBERSOFEDITONRALCOMMITTEE:DengYuezheng,LanYuqi,ZhuChuan,ZhuAnqing,JiangShangqing,Wangjizao,TangWnquan,LiGuangyou,WuMingyao,ZhangC…  相似文献   

6.
REGULARITIES,CONDITIONSANDTHECOMPREHENSIVEPROSPECTINGMODELOFMICROGRAINED-DISSEMINATEDGOLDDEPOSITSINNORTHWESTERNGUANGXI①WangJi...  相似文献   

7.
陈宝冲THECHANGEOFTHEGENERALFORMANDTHETRANSPORTOFTHEWATER,LOADANDSALTABOUTTHENORTH-BRANCHOFTHECHANGJIANGRIVERMOUTH¥ChenBaochong(N...  相似文献   

8.
ASTUDYONLOWAIR-PRESSUREDOWNHOLEHAMMERREVERSECICULATIONDRILLINGTECHNIQUEANDITSAPPLICATION①FanQikangLiuZhixiang(GuangxiBureauof...  相似文献   

9.
DEVELOPMENT,TERRITORIALDIFFERENCEANDSPATIALEVOLUTIONOFTOWNSINCHINA──ADISCUSSIONONTHEVIEWSOFANTI-URBANISMINCHINA¥GuChaolinInst...  相似文献   

10.
AMULTI-WINDOWGISAPPROACHFORWATERQUALITYDATAANALYSISLinHui(DepartmentofGeography,TheChineseUniversityofHongKong,Shatin,NewTerr...  相似文献   

11.
EDITORIALCOMMITTEEEDITORIALCOMMITTEE¥//ADVISORSWuChuanjun(X{#N):InstituteofGeography,theChineseAcademyofSciences(CAS),Beijing...  相似文献   

12.
A LOCATIONAL COMPARATIVE STUDY ON HIGH-TECH INDUSTRIAL ZONES IN CHINA   总被引:1,自引:1,他引:0  
ALOCATIONALCOMPARATIVESTUDYONHIGH-TECHINDUSTRIALZONESINCHINAWeiXinzhen魏心镇;ShiYonghui史永辉(DepartmentofGeography.PekingUniversit...  相似文献   

13.
MESO-CENOZOICGREATCONTINENTALSPREADINGBASINSANDTHEIROROGENYOFCHINAANDADJACENTREGIONSGuoFuxiang(ResearchCentreofPredictionofHi...  相似文献   

14.
NATURALRESOURCESANDECO-ENVIRONMENTMAPPINGINHENAN,CHINAHuangWanhua(黄万华);GuoYuxiao(郭玉萧)(TheInstituteofGeography,theHenanAcademy...  相似文献   

15.
THESOURCESOFORE-FORMINGMATERIALSANDCONTROLLINGFACTORSOFMAINWEATHERINGDEPOSITSINGUANGXI①ChenKailiGaoZhaodianZhangPengxiang(Gua...  相似文献   

16.
海底铁锰矿床主要有铁锰结壳、铁锰结核和层状、透镜状铁锰矿床,其成矿作用主要是水成成矿作用,成岩成矿作用和热液成矿作用。水成成因的结壳富Co、贫Cu,REE含量高,Ce正异常明显,且富含δ-MnO2。成岩成因的结核富Ni、Cu,REE含量低,Ce正异常减弱,含钡镁锰矿.热液成因的铁锰矿床Mn、Fe分异好,微量过渡金属和REE含量最低,见Ce的负异常和Eu的正异常.  相似文献   

17.
WATERRESOURCEINQILIANMOUNTAINOUSREGIONANDITSINFLUENCEONECO-ENVIRONMENTOFHEXICORRIDOR¥ChenChangyu(MeteorologicalBureauofGansuP...  相似文献   

18.
FACTORS AFFECTING FORMATION AND DEVELOPMENT OF THE URBAN INDUSTRIAL DISTRICT IN CHINA──A Case StudyonCaohejingHi-TechParkinSh...  相似文献   

19.
POSSIBLEHYDROGEOCHEMICALPRECONDITIONSFORKASHIN-BECKDISEASEINTRANSBAIKALIA¥ZamanaLeonidVasilevich(ChitaInstituteofNaturalResou...  相似文献   

20.
THEHOLOCENESEDIMENTALCHARACTERISTICANDPALEOCLIMATICEVOLUTIONOFEBINURLAKE,XINJIANG吴敬禄,王苏民,吴艳宏THEHOLOCENESEDIMENTALCHARACTERIST...  相似文献   

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