loess ['ləuis]

loess的基本解释

n.

黄土

loess所属的单词分类

Landform / 地形 [185]

sea cave  ·  oxbow lake  ·  oceanic trench  ·  natural arch  ·  mid-ocean ridge  ·  lava tube  ·  lava dome  ·  glacier cave  ·  crater lake  ·  barrier island

Mineral & Rock / 矿物与岩石 [120]

yeatmanite  ·  xalostocite  ·  wairakite  ·  pyroclastic flow  ·  petrified wood  ·  metamorphic rock  ·  Druze  ·  tiger's eye  ·  rose quartz  ·  rock cycle

与loess相关的网络例句 [注：此内容来源于网络，仅供参考]

The result of factor analysis can provide the changes of relative precipitation and temperature variations. In trace elements, Cu, As, Zn, Pb and Ni were apparently enrichmented in soil layers and are sensitive to climatic changes. Carbon isotope is more sensitive to climatic changes than that of oxygen isotope in loess stratigraphy. The heavy mineral are varified in the loess stratigraphy, but their content differences between loess and palaeosol is little. Though the palynologic analyses results reveal that pollens and spores are fewer in the loess stratigraphy, they differ greatly in loess layer and palaeosol layer not only in species but also in types, i. e., the pollens and spores indicating warm and moist climate, such as Lles, Podocarpus, Polopydium, Pteris grerilliana Wall, Pterocarya and Juglans appear in palaeosol layers, while those indicating cold and dry climate such as Ephedra, Artemisia, Chinopodiaceae, Picea and Abies exist mainly in loess layers. The pollen content of broad-leaved tree mainly consisting of Pterocarya is up to 60% in palaeosol 〓, while the content of Ephedra is more than 50% in 〓 loess layer, showing that the environment differed greatly when 〓 and 〓 were formed.

当然，常量元素氧化物的组合因子分析结果可提供相对降水与相对温度在剖面的变化，因而来反映气候状况更为理想；微量元素中Cu、As、Zn、Pb与Ni在成土过程中富集明显，亦较好地反映了气候变化；稳定同位素中的碳同位素比氧同位素更能敏感记录气候的变化；研究区黄土地层中重矿物种类较多，但黄土层与古土壤层中含量差异不大；孢粉分析结果揭示，尽管研究区黄土层中孢粉总量相对较为贫乏，但黄土层与古土壤层中孢粉种属相差较大：在古土壤层内出现了指示相对暖湿环境的冬青属、罗汉松属、水龙骨属、林下凤尾蕨、枫杨、胡桃等植物孢粉，而黄土层中麻黄、藜科、蒿属及冷杉、云杉含量较高。

So the systematically study of loess landslides are emergently needed. Based on detailed investigation and survey of characteristics of environmental geology, engineering geology, hydrometeorology in Tongchuan, the distribution characteristic and the outer, inner factor of loess landslides are studied; and it is concluded that the rainfall and artificial engineering activity are the leading causes of loess landslide among various factors. Through plenty of tests of soil samples, it is researched that the loess"s physical mechanics characteristics, the loess landslide"s formation mechanism and kinematics mechanism.

本文在详细调查和勘察铜川地区的环境地质、工程地质及气象水文特征的基础上，对黄土滑坡的分布特征和滑坡形成的内外因素进行了深入剖析，认为在各种影响因素中，大气降水和人类工程活动是铜川黄土滑坡的最主要的诱发因素；在采集大量的土样并进行试验的基础上，对黄土的物理力学特征和黄土滑坡形成机理、运动学机理进行了研究，推导出了滑坡运动机理中的孔压参数A_D、B_D分别与孔隙比和饱和度的统计关系。

During the Last Interglaciation it was the forest, mainly composed of broadleaves, or forest-grassland at the east and middle part of the Chinese Loess Plateau, and was the forest-grassland at the west part of the Chinese Loess Plateau. It changed to the forest or forest-grassland at the most part of the Chinese Loess Plateau in the Holocene, some kinds of hardwood broadleaves dispersing at the warm temperate and the tropic zones appeared. Now the vegetation at the Chinese Loess Plateau inherits from that during the Holocene, the vegetation have been heavily destroyed owing to the human being actions. The vegetation protection at the Chinese Loess Plateau is a significant problem.

末次间冰期期间气候温暖湿润，黄土高原的中、东部地区主要发育了以落叶阔叶林为主的森林或森林草原植被，黄土高原西部地区主要发育的是以针叶林为主森林草原植被；全新世期间黄土高原的植被状况发生较大变化，黄土高原的大部分地区为森林植被或森林草原植被，植被中还有暖温带落叶阔叶林，并含有少量亚热带种属；现代黄土高原的植被主要还是继承了全新世以来的植被状况，但是由于人类活动的加剧，对黄土高原的植被产生了毁灭性的破坏，因此，如何保护黄土高原的自然植被是我们面临的一个严峻的现实问题。

与loess相关的网络解释 [注：此内容来源于网络，仅供参考]

loess：黄土

"这种"统一的局面"的形成关键在客体因素上表现为:(1)、黄土(Loess)由风力堆积而形成华北耕地,但由于黄河的挟带使大量水灾成为可能. >公元前651年齐侯在葵丘的会盟便提到了"毋决堤,毋曲防"的号召. >中提到治水11次,

loess：土

于是,她用黄土(loess)加上水,和成黄泥,照着自己在水中的倒影捏了起来. 捏好了,她把这些小东西放到地上,这些小东西竟然活了起来,在地上有说有笑,又蹦又跳,围着她叫"妈妈". 女娲开心极了,给他们取名叫做"人". 然后,她不停地和泥,

loess：黄土 黄土

■ lodging 倒伏 倒伏 | ■ loess 黄土 黄土 | ■ log file 日志文件 ログファイル

loess：古土壤

黄土:Loess | 古土壤:Loess | 雪填图:Tibetan Plateau

Loess Plateau：黄土高原

黄土高原(Loess Plateau)在中国北方,它东起太行山,西至乌鞘岭,南连秦岭,北抵长城,主要包括山西、陕西、以及甘肃、青海、宁夏、河南等省部分地区,面积40万平方公里,为世界最大的黄土堆积区.