1)seasonal frozen soil季节冻土
1.Effects of climate warming on seasonal frozen soil in east Gansu;甘肃陇东地区季节冻土变化对气候变暖的响应
2.In this paper the microstructure of seasonal frozen soil of the road between Changchun City and Jilin City is studied with the technique of SEM.利用扫描电子显微镜(SEM)技术,从土体微观结构特征出发,对长春—吉林公路某路段季节冻土的粒度成分、结构单元体成分、孔隙特征及结构特征进行了定量分析,并对其与水分迁移的关系进行了讨论。
3.Mat-Cryic cambisols under vegetation belongs to seasonal frozen soil.分析发现,季节冻土在高寒草甸植被生产力形成过程中有着积极的影响作用,主要表现在:1)季节冻土的存在和维持将给高寒植物生长提供良好的土壤水分,对植物初期营养生长发育有利,可弥补春夏之交时降水不足所引起的干旱胁迫影响;2)季节冻土的长时间维持,有利于植物残体和土壤有机质留存于土壤,并随土壤冻结和融化过程发生迁移,可提高土壤肥力;3)较高的土壤水分有利于土壤胡敏酸的形成,可保证植物生长所需的其它有机元素的供给;4)冻土层所形成较高的土壤水分使土体热容量加大,从而调节因气候异常波动引起的土壤温度变化;5)季节冻土的变化对植物地上年生产量形成有一定的影响作用,表现出从10月或11月开始,土壤冻结速率快,对提高植物地上年生产量有利。
英文短句/例句
1.Thermal analysis of artificially frozen wall in seasonal frozen area季节冻土地区人工冻土墙的冻结特性研究
2.Experimental Study of the Temperature Field in a Frozen Wall Influenced by a Seasonal Frozen Soil Layer季节冻土层影响下冻土墙温度场模型试验研究
3.The Mechanism and Numerical Simulation of Water Transfer in Seasonal Freezing Soil;季节冻土水分迁移的机理及数值模拟
4.Research on Structure of Anti-Seepage Channels in Seasonal Frozen Soil Region;季节冻土区渠道防渗结构型式的研究
5.Field monitoring on vibration response of railway structure in the seasonally frozen region in summer季节冻土区夏季轨道结构振动反应现场监测
6.Research on Large Channel Anti-frostheaving Bank Revetment Structures with High Water Level in Seasonal Frozen Soil Region季节冻土区高地下水位大型渠道防冻胀护坡结构研究
7.The Effect of Global Radiation Budget on Seasonal Frozen Depth in the Tibetan Plateau青藏高原总辐射变化对高原季节冻土冻结深度的影响
8.Field monitoring on vibration acceleration response of railway in seasonal frozen region of Daqing induced by train-steering in winter大庆季节冻土区冬季铁路列车行驶振动反应现场监测研究
9.RESEARCH OF GROUND FROZEN DEPTH IN SEASONALLY FROZEN AREAS季节性冻土地区土壤冻结深度的研究
10.Subgrade frost heaving treatment measure research in seasonal frozen soil area季节性冻土区路基冻胀处理措施研究
11.Experimental Research on the Frost Heave Mechanism of Seasonal Frozen Soil and Upward Freezing Pulling Test of Near Water Foundation季节性冻土冻胀机理与近水基础冻拔试验研究
12.Research on Frozen and Uplift Resistant for Concrete Short Pile Foundation in Seasonal Frozen Soil Area季节性冻土环境下混凝土短桩基础抗冻拔研究
13.Experimental Research on Seasonal Subgrade Freezing Damage in Gobi Region;戈壁地区季节性冻土路基冻害的试验研究
14.Research and Application of Frost Heaving Mechanism of Seasonal Frozen Soil;季节性冻土构筑物冻胀机理研究及应用
15.Hazard and Prevention of Freezing and Thawing to Hydraulic Structure Engineering in the Seasonally Frozen Soil Region;季节性冻土区冻融对水工建筑物的危害及防治
16.Anti-frost Design Method for Highway Pavement in Seasonal Frost Region季节性冻土地区公路路面抗冻设计方法
17.Frozen Injury of Railway Subgrade around Seasonal Frozen Earth Area as Well as Prevention Measures季节性冻土地区铁路路基冻害及其防治措施
18.Investigation on Seismic Response of Liquid Storage Tanks on Seasonally Frozen Ground;季节性冻土影响的储罐地震反应研究
相关短句/例句
Seasonally frozen ground季节冻土
1.Under the impact of frost heave,thaw settlement and salt heave on the embankment and pavement of the highways in the zones of seasonally frozen ground in Gansu province,Northwestern China,many road damages,which has serious influence on road stability and security,occurred such as pavement cracks and road boiling etc.季节冻土区含盐土公路路基在季节性冻胀、盐胀和融沉作用下,发生大量的道路病害,给道路的安全运营带来了严重的隐患。
3)seasonal frozen soil季节性冻土
1.Effection of frost heave on the pile length in seasonal frozen soil area;季节性冻土区冻胀对桩长的影响
2.Freezing-thawing rule of seasonal frozen soil and its eco-hydrological function in Zhalong Wetland;扎龙湿地季节性冻土冻融规律及其生态水文功能研究
4)seasonal freezing soil area季节冻土区
1.A few commonly used materials of canal anti-seepage lining engineering at seasonal freezing soil area were introduced,the technical demands of a variety of materials were put forward,and it was showed that composite materials anti-seepage lining structure is the best one at seasonal freezing soil area.介绍了季节冻土区渠道防渗衬砌工程的几种常用材料,提出了各种材料的技术要求。
5)seasonal frozen earth季节性冻土
1.Heilongjiang Province is a typical seasonal frozen earth area in our country.黑龙江省是我国典型的季节性冻土区，受其影响，地下水位动态变化特征有其特殊性，故在动态资料分析中特别是在地下水资源计算参数的确定上应引起注意。
6)seasonally frozen ground季节性冻土
1.Frozen injury and prevention of roads of seasonally frozen ground regions in western Liaoning;辽西季节性冻土地区道路冻害及其防治
2.km seasonally frozen ground in our country, it is about 54% of the country.其中季节性冻土面积为514万平方公里，约占国土面积的54％。
延伸阅读
季节冻土 冬天含冰冻结、夏天全部融化的岩土。冻土的一类。包括季节冻结层和季节融化层（也称活动层）。 季节冻结层分布于非多年冻土区，在多年冻土南界以南(北半球)或下界（垂直地带）以下的广大地区，以及冻土融区地带。具有明显的纬度及垂直带性，一般说随纬度及海拔的增高，其厚度增大，由0.1～0.2米增厚到2.0～3.0米。在北半球 10月中下旬至 12月，季节冻结层由北而南接连出现，2月下旬至6月初由南往北逐渐消失。中国长江以北各省区都有季节冻土分布，其面积约占中国领土的54％。季节融化层分布在多年冻土地区，下垫着冻土层。由多年冻土的南界往北或下界往上，季节融化土层逐渐变薄，由2.0～3.0米减小到0.1～0.2米。在北半球4月初开始出现季节融化层，至9月底10月初达到最大融化深度。 季节冻结层冬天形成时，随冻结锋面自上而下移动，土中水分向冻结锋面迁移并发生聚冰作用（见冻融时水分迁移），冰层及冰透镜体主要集中在最大冻结深度的2/3～1/2部位。冻结后的土体体积增大，由此产生的冻胀可使各类建筑物产生变形和破坏。季节融化层的冻结有两个方向，一是自地表往下，一是自多年冻土上限往上。由于水分向两个冻结面迁移，因此季节融化层冻结后的聚冰现象及水分的重新分布与季节冻结层不同，在季节融化层上部 1/3处及冻土上限附近冰层和冰透镜体较为集中。（见图） 夏天季节冻结层和季节融化层融化时，由于冰层及冰透镜体分布的不均匀，形成土层不均匀沉降是导致各类建筑物变形和破坏的重要原因。
