沙漠形成

  • 网络desert formation
沙漠形成沙漠形成
  1. 末次冰期以来柴达木盆地沙漠形成与演化

    Desert Formation and Evolution in Qaidam Basin since the Last Glacial Epoch

  2. 东北地区末次冰期以来气候地貌的若干特征末次冰期以来柴达木盆地沙漠形成与演化

    Some Characteristics of the Climatic Landform in the Northeast China Since the Last Glacial Epoch Desert Formation and Evolution in Qaidam Basin since the Last Glacial Epoch

  3. 中国沙漠形成演化的初步研究

    A Preliminary Study on the Formation and Evolution of Deserts in China

  4. 中国陆架沙漠形成原因探讨

    A preliminary study on the formation of deserts on the shelves of China Seas

  5. 下沉的空气是撒哈拉(在非洲)等沙漠形成的帮凶。

    Sinking air helps to form deserts , such as the Sahara Desert in Africa .

  6. 沙漠形成演化是第四纪古气候、古环境研究的重要内容之一。

    Evolution of desert is one of important aspect of Quaternary paleoclimate and paleoenvironment research .

  7. 这一切与周围酷热的沙漠形成了鲜明的对比,这里的人也一样。

    Contrasted to the scorching desert that surrounds this place , so are these people .

  8. 早更新世以来腾格里沙漠形成与演化的风成沉积证据银川盆地中更新世以来的孢粉组合与古环境变化

    AEOLIAN DEPOSIT EVIDENCE FOR FORMATION AND EVOLUTION OF THE TENGGER DESERT IN THE NORTH OF CHINA SINCE EARLY PLEISTOCENE Pollen Assemblages and Paleoenvironment Changes in Yinchuan Basin since Mid-Pleistocene

  9. 毛里塔尼亚的理查特结构是一个巨大的圆形漩涡,直径大约三十英里(50千米)。另外这个漩涡在毫无特色的广阔无垠的西非沙漠形成了一个靶心。

    The Richat Structure in Mauritania is a gigantic circular swirl , about 30 miles ( 50 kilometers ) in diameter , that forms a bull 's-eye in an otherwise featureless expanse of west African desert .

  10. 塔克拉玛干沙漠的形成时代及发展过程

    On the age and evolution of the Taklimakan Desert

  11. 中国沙漠化形成问题的分析研究

    Analysis of problems of desertification formation in China

  12. 第四纪时,干旱化气候进一步加剧,塔克拉玛干沙漠逐渐形成;

    In the Quaternary , drought tended to be more and more serious , and the Taklimakan Desert formed .

  13. 也是自然演变史上一个十分重要的时期,其中强烈的风化作用和碎屑物质积累为今日撒哈拉沙漠的形成奠定了物质基础。

    The heavy erosion function and detrital accumulation in this period had laid a foundation of material source for forming Sahara Desert .

  14. 风成沙波纹是在风的作用下在沙漠中形成的一种最基本的地貌形态,一直是颗粒介质研究的一个典范。

    Aeolian sand ripples are a common feature in sandy deserts , which has always been a paradigm for the study of granular materials .

  15. 其成因类型有原生的葡萄玛瑙、次生改造的戈壁石和沙漠盐湖形成的沙漠石。

    The genetic types of queer stones include primary grape agate , Gobi stone formed through water flowing and weathering , Desert stone formed in saline lake in desert .

  16. 导致土地沙漠化形成的主要因素按重要次序依次为景观多样性>景观优势度>景观均匀度>景观分维数>农田开垦指数>牧压强度>人口密度。

    According to the importance , the orders of the main driving factors leading to the formation of desertification were : landscape diversity > landscape dominance > landscape evenness > landscape fractal dimension > cropland reclamation index > grazing capacity > population density .

  17. 沙漠的形成时代、沙源、沙山及其间湖泊的成因与演化过程等及其与区域及全球气候环境变化的关系需要进一步研究。

    There are still some important problems waiting for further studying , they are the desert formation age and sand source , the causes and evolution of mega-dunes and inter-dune lakes , and the relation between regional and global climate environment changes , etc.

  18. 沙漠化的形成有自然和人为两方面原因。

    The two causes are related to natural and anthropogenic factors .

  19. 关于中国沙漠与黄土形成的古地理背景

    Paleogeographic Conditions on the Origin of the Deserts and the Loess Deposits in Northern China

  20. 塔克拉玛干沙漠盐土荒漠形成演变及对沙丘性状的影响

    The formation adn change of solonchak desert and its impact on the natures of sand dune in the Taklimakan Desert

  21. 从沙漠化土地形成的空间分布格局分析,沙漠化发生程度在空间上呈现出明显区域差异性和复杂性特点。

    Taking the spatial distributing pattern of desertification formation for analysis , the occurrence degree of desertification showed obviously regional diversity and complicacy in spatial scale .

  22. 我们现在知道,像澳大利亚南部的艾尔湖,就是在正常的沙漠条件下形成了的湖泊。

    We know from modern day desert lakes , like Lake Eyre , South Australia , that under the right conditions , lakes do form in the desert .

  23. 特别是位于尾闾湖区的湖区,更成为了生态危机的重灾区,村庄荒弃,被沙漠吞并,形成大批的生态移民问题。

    Especially terminal lakes region has become the heavy disaster area of ecological crisis , villages have been abandoned and swallowed by the desert , which resulted in a large number of ecological migration .

  24. 综合分析了我国风沙灾害加剧的原因,并从我国北方沙漠、沙地形成演变的地理格局,探讨了我国沙化过程的中、长期发展趋势。

    Rapid expansion of blown-sand disaster in china has been analyzed synthetically in this paper . According to geographical pattern of the desert and sandy land evolution , middle and long-term trend of desertification in Northern China has also been discussed .

  25. 研究结果表明:(1)库布齐沙漠中东部地区土地沙漠化形成机制是自然和人为因素共同作用形成的。

    The results indicated : ( 1 ) The driving mechanism of the formation of land desertification in the east part of Kubuqi Desert was resulted by the conjunct effects of natural and human factors .

  26. 通过对中国干旱区8种不同成因沉积物吹蚀速率的风洞实验,从风蚀动力机制上讨论沙漠的物质来源及其与沙丘发育和沙漠形成的关系。

    By the wind tunnel experiment , we studied the deflation rates of 8 different sediments in arid regions of China , discussed the sources of aeolian sand and its influence on the development of sand dunes and formation of desert from the view of dynamics of wind erosion .

  27. 尺度在15km以上的绿洲可以形成绿洲&沙漠环流和绿洲的小气候,有较低的边界层,同时在绿洲边缘的沙漠形成湿气柱。

    The oasis-desert circulation and oasis microclimatic system could be established over the oasis on a scale larger than 15 km , the boundary layer height was low and a water vapour wall could be formed over those oases border ;