Exploring suitability for tropical crop cultivation in Hainan Island by SOTAL methodology   总被引：6，自引：0，他引：6  

ZHANG Xue-lei  S. Mantel  ZHANG Gan-lin  VWP. van Engelen 《地理学报(英文版)》2001,11(4):420-426

1 Introduction Land degradation is a major threat to environmental and agricultural quality of land[1] and is directly related to food security issues. An instrument for decision-makers to plan or stimulate allocation of land to users that can be sustained and are economically viable and socially acceptable. Different kinds of land are unequally suited to various uses. Land evaluation is the assessment of the suitability of a tract of land for a specified kind of use and it provides objective…  相似文献   

Estimation of peak relative velocity and peak absolute acceleration of linear SDOF systems     

by Jianwei Song  Yi-Lun Chu  Zach Liang  George C. Lee University at Buffalo  State University of New York  NY  USA Erratum to： Earthq Engrg ＆ Engrg Vib DOI： ./s---x 《地震工程与工程振动(英文版)》2007,6(2):213-213

We have found some mistakes in the article by Jianwei Song et al. (2007). The revisions arc given below: 1. "NEHRP 2003" in Figs.8 and 9 should be changed to "BSSC 2003". 2. "Tsopelas" or "Tsopelas method"  相似文献   

First Occurrence of M andarinoite in China   总被引：6，自引：0，他引：6  

Harvey E. BELKIN National Center  U.S. Geological Survey  Reston  VA -  USAE-mail: hbelkin@usgs.gov ZHENG Baoshan  ZHU JianmingState Key Laboratory of Environmental Geochemistry  Institute of Geochemistry  Chinese Academy of Sciences  Guiyang  Guizhou  China 《《地质学报》英文版》2003,77(2):169-172

This report describes the first occurrence of the rare mineral mandarinoite (Fe3+2 Se3Og · 6H2O) in China. It occurs in the Lower Permian Maokou Formation carbonaceous shale in Yutangba Village east of Enshi City in southwestern Hubei Province. The shale is selenium-rich and contains native selenium, V-Mo-Cr-bearing iron oxide, clay and quartz. Weathering of the selenium in the bedrock under moderate to high redox conditions in the presence of ferric iron has formed mandarinoite.  相似文献   

Potential control of climatic changes on flood events in the Yangtze Delta during 1100-2002     

JIANG Tong  ZHANG Qiang  Yves GUERNOND 《地理学报(英文版)》2004,14(1):70-80

1IntroductionClimatic warming, flood hazards and their impacts on human society receive increasing attention from governments and public (IPCC, 2001). During recent years, agriculture, industry and even the development of the whole national economy suffered tremendous loss resulted from flood and waterlogging hazards.The Yangtze Delta is densely populated and economically developed. Monsoonal climate, geomorphologic characteristics and human activities inflict floods and water-logging hazar…  相似文献   

Relationship between Granite and Eclogite on the Southern Margin of the Qilian Mountains: Evidence from Zircon SHRIMP Agesof the Aolaoshan Granite     

WU Cailai  Jone WOODEN  YANG Jingsui  LI Haibing Trevor IRELAND  LIOU June Guang  Wan Yusheng  Shi Rendeng Institute of Geology  CAGS  Beijing Department of Geology  Stanford University  Stanfor  CA -  USA 《《地质学报》英文版》2002,76(1):118-125

Zircon SHRIMP ages of the Aolaoshan granite on the south margin of the Qilian Mts. range from 445±15.3 to 496±7.6 Ma (averaging 473 Ma), belonging to the Early Ordovician. Geochemically, the granite is similar to I-type granite and, tectonically, was formed in an island-arc environment based on relevant diagrams for structural discriminations. Considering also the regional geology, the authors suggest that the granite is part of an ultrahigh-pressure belt on the south margin of the Qilian Mts. and that its formation bears a close relationship to this belt.  相似文献   

ТИПЫ СОЛЕНЫХ ОЗЕР В БАССЕЙНЕ ЦАЙДАМ     

ЮаньЦзянь-ЦИ 《地质学报》1959,38(3)

1 .FeoreKToH“呵eeK“e oeojeHHoeT“6aeee汤Ha从a认及aMa Baeee益H以a兹仄aMo‘py、eH ropH以Mo xpe6TaMo KyoHb一。yHb,以H二,HoaH卜j乏。AP山HH仄aK.3TH eK几a及qaT以e roPH反e eHeToM曰o5Pa3o3a几Heb B no3八HeKa几e风oHeKoMH PaHeBaPH城HHCKoM瓜aH米eHH只x.CaM 6aeee益H nPe仄cTaa几只eT:eo6诚,MaeeHB e oeHoBaHHeM八oKeM6PH直qeeK“x MeTaMoP中HqeeKHx noPo八. OT及e几bH曰e qaeTH以a盆八aMeKoro MaeeHaa B eBo旧oqePe皿b,Pe3Ko oT几Hqa心Te只Me水及yCo6o盆no TeKToHHqeeKoMy xaPaKT…  相似文献   

THERMAL LENSES AND INTERNAL SOLITONS IN CHAPALA LAKE, MEXICO     

Filonov  A. E.  Tereshchenko  I. E. 《中国海洋湖沼学报》1999,17(4):308-314

INTRODUCTIONThelargestlakeinMexicoandthirdlargestinLatinAmerica,ChapalaLake(approximately2 0°N) ,is 1 50 0mabovesealevel,measures 75× 2 5km ,hasaveragedepthof6m (maximumdepthcloseto 1 1m)andamountainchainalongitsnorthernandsouthernshores (Fig .1a) .TheLermaRiverflowsintoit;theSantiagoRiverflowsoutofit.Thebeautifullandscape,andwarmclimateconducivetobreezecirculationalongitsshore ;absenceofabrupttemperaturevariations,andthemoderateairhumidityat tractmanytouriststothelake .Manyretirees…  相似文献   

Characteristics of shallow gas hydrate in Okhotsk Sea   总被引：1，自引：0，他引：1  

LUAN XiWu  JIN YoungKeun  Anatoly OBZHIROV  YUE BaoJing Key Lab of Marine Geology  Environment  Institute of Oceanology  Chinese Academy of Sciences  Qingdao  China  Korea Polar Research Institute  KORDI  Incheon  -  Korea  V.I. Il’ichev Pacific Oceanological Institute of the Far Eastern Branch of Russian Academy of Sciences  Vladivostok  Russia 《中国科学D辑(英文版)》2008,51(3):415-421

Multidisciplinary field investigations were carried out in Okhotsk Sea by R/V Akademik M.A. Lavrentyev (LV) of the Russian Academy of Sciences (RAS) in May 2006, supported by funding agencies from Ko- rea, Russia, Japan and China. Geophysical data including echo-sounder, bottom profile, side-scan- sonar, and gravity core sample were obtained aimed to understand the characteristics and formation mechanism of shallow gas hydrates. Based on the geophysical data, we found that the methane flare detected by echo-sounder was the evidence of free gas in the sediment, while the dome structure de- tected by side-scan sonar and bottom profile was the root of gas venting. Gas hydrate retrieved from core on top of the dome structure which was interbedded as thin lamination or lenses with thickness varying from a few millimeters to 3 cm. Gas hydrate content in hydrate-bearing intervals visually amounted to 5%―30% of the sediment volume. This paper argued that gases in the sediment core were not all from gas hydrate decomposition during the gravity core lifting process, free gases must existed in the gas hydrate stability zone, and tectonic structure like dome structure in this paper was free gas central, gas hydrate formed only when gases over-saturated in this gas central, away from these struc- tures, gas hydrate could not form due to low gas concentration.  相似文献   

序言     

中国冶金地质总局"湘西-滇东地区矿产地质调查"二级项目项目管理办公室 《地质与勘探》2019,55(z1)

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前言     

主编副主编简介- 《《地质学报》英文版》2017,91(5)

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