查询词典 loess

The validity of the modified stochastic dynamic water balance model is verified by long term experimental data of winter wheat field in loess plateau.

本文用黄土高原长武农业生态试验站的冬小麦长期定位试验资料对改进的随机动力学水平衡模型进行了准确性检验。

Stochastic dynamic water balance model ; water cycling ; loess plateau

随机动力学水平衡模型；水量转化；黄土高原

The output of soil nitrogen and phosphor is associated with grain seeds,which is removed from crop field forever.Therefore,stubble retention combined with nitrogen and phosphor fertilizer supply can replenish the soil nutrient pool in the loess plateau.

耕层0-30cm速效氮和速效磷均有所增加，但速效磷以NTS增长幅度最大，而速效氮却以NTS增长幅度最小；耕层0-30cm速效钾表现为下降趋势，但以TS和NTS减幅较小。

Based on the present research results, a method to establish the constitutive law for collapsible deformation is proposed by studding the collapsible loess in Lanzhou....

本文在对兰州地区湿陷性黄土的湿陷变形的研究，在已有研究成果的基础上，建议了一种建立黄土湿陷变形本构关系的方法。

Study on Subarea Bearing Capacity of Foundation in Loess District

它包括区域发展、产业发展、土地利用、城镇体系等多方面的内容。

The Loess Plateau and its adjacent regions are in the critical eco-envi-ronmental zone of China, which is from subhumid to semi-arid,from forestto steppe and from agricultural regions to animal husbandry regions. Thereare serious environmental problems such as the most extensive and serioussoil erosion in the world, desertification, water shortage for crops, flooddamage, increased soil salinity as well as increased industrial pollution.

黄土高原及其毗邻地区包括以晋、陕、甘为主体的黄土高原，面积约35.85万平方公里，及其周围与之有关联的黄土分布区，范围大致是阴山以南、秦岭以北、太行山以西及日月山和贺兰山以东的地域。J两者合计面积为62.38万平方公里。

On the basis of the distribution and physical geographical characteristics of species endemic to China, the flora of Kongtong Mountain belongs to: subregion of Loess Plateau,North China region. Si no-Japan forest subkingdom, Holarctic kingdom.

根据种、中国特有种和建群种的分布情况及自然地理特征，本区系应隶属于：泛北极植物区、中国—日本森林植物亚区、华北地区、黄土高原亚地区。

Objective To study the fauna of Fanniidae in subregion Loess plateau of China.

目的调查研究我国黄土高原亚区厕蝇科昆虫种数、分布及区系特征。

As the subsistence farming of loess plateau with frequent natural disasters such as drought and geographically is far away from the economic center. In recent years, it is very common in that country"s countryside that the labors earn life outside their hometown which leaves the problem of "the children-staying-in-local " education gradually serious. I profess in a countryside high school in Tongwei county and know that place"s situation thoroughly thus I gain the first-hand materials.

作为全国有名的贫困县，在经济上属于黄土高原自然农业经济，干旱等自然灾害高频发生，在地理上远离经济中心，近年来，当地农村劳动力外出务工的现象非常普遍，"留守子女"的受教育问题日益突出，本人任教于通渭县的一所农村完全中学，熟悉当地情况，能够获取第一手资料。

In order to select a perfective procedure and protocol for the fine grain OSL dating, measurements of natural IRSL and GLSL signals from a range of modern sediment samples collected from different sedimentary environment, tests of IRSL and GLSL bleaching behaviors for loess fine grains under sunlamp, and comparisons of the equivalent dose determined by different methods have been undertaken, as well as IRSL and/or GLSL dating of more than forty sediments samples taken from late Quaternary deposit strata at different site in North China.

为了选择更合适于中国北方沉积物样品细颗粒OSL测年的实验程序和技术，进行了华北地区不同沉积环境的现代沉积物样品的细颗粒天然IRSL和GLSL信号测量，黄土细颗粒IRSL和GLSL的光晒退测试，不同方法获得的等效剂量值的比较分析，以及取自华北不同地区的40余个晚第四纪沉积物样品的IRSL和GLSL测年。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。