The protection of top soil layer has utter most importance in protection of grassland resources and ecosystem, and in prevention of sandy desertification.
保护地表土层对于保护草地资源和生态环境，以及沙漠化防治具有极端重要性。
The dynamic shear modulus ratio and damping ratio of soil are indispensability for seismic safety evaluation and soil layer seismic response analysis of engineering sites.
土的动剪切模量比和阻尼比是工程场地地震安全性评价工作和土层地震反应分析中不可缺少的重要参数。
How to assess quantitatively the desiccation of deep soil layer is of great importance to determine the reasonable vegetation type and density and guarantee vegetation rehabilitation.
如何定量评价深层土壤的干燥化程度，有助于确定适宜的植被类型和密度，保证人工植被建设的顺利进行。
Through the roles of interception and absorption of the canopy layer, litter layer, and root and soil layer, the benefits of flood and sediment reduction of forest vegetation are prominent.
森林植被通过林冠层、枯落物层和根系土壤层的分层拦截吸收，起到突出的减洪减沙作用。
They rely on groundwater sources and the soil layer to survive.
它们依靠地下水源和土壤层生存。
For comparison, the case of homogeneous soil layer is considered also.
为了比较起见，文中考虑了均匀土层的情形。
The majority of mites in the soil layer eat small insects or their eggs.
土层中的绝大多数螨虫以小昆虫或它们的卵为食。
Meanwhile the significance of solving problems about dried soil layer is discussed.
同时，研究指出了解决土壤干层问题的意义。
The subsidence model of every soil layer can be properly developed according to these results.
这些研究成果将为上海区域地面沉降模型中各土层沉降模型的合理选择提供依据。
The skin resistance consists of frictions provided from every soil layer which the pile goes through.
设置在分层土中的桩，其桩侧总摩阻力由桩所穿过的各土层的摩阻力所构成。
Remanent magnetism of soil layer is taken as a reference frame for locating hydrocarbon seepage zone.
本文利用土壤剩余磁性作为确定烃类渗漏带的参考系。
According to the local geology condition, basis force area can change, but must dig to old soil layer.
设备基础的受力面积可根据当地的地质条件相应变化，但必须挖至老土层。
The change law of release amount of CO2 from thin soil layer has the positive correlation with temperature.
而薄土层土壤CO_2释放量变化规律，与气温变化规律呈正相关，CO_2释放量不存在“滞后性”。
Variations of frozen soil layer have direct relation with the energy exchange between the ground and atmosphere.
冻土层的变化与地气交接面的能量交换过程有直接的联系。
A new approach is introduced for obtaining the dynamic flexibility of soil layer with variable physical parameters.
介绍一个求解变参数层状地基动力柔度系数的近似求解方法。
But in this paper, we lay emphasis only upon analyzing the influence of soil layer characteristics on ground motion.
本文着重考虑了土层的特性对地面运动的影响。
The theoretical basis for reinforcing of dynamic compaction in winter and treating the frozen soil layer is presented.
提出了关于冬季强夯加固处理冻土层的理论依据。
In the actual project, the nature of the soil layer is not uniform, but varies with horizontal and vertical direction.
在实际工程中，土层的性质并非是均匀的，而是沿水平和竖向变化的。
Since August, 1998, Xinjiang area began the measure of soil layer bore stress. It was successively completed 7 stations.
自1998年8月起，新疆地区开展土层钻孔应力测量，先后建成7个台。
In order to absorb water, the speed of root elongation in plants must surpass the speed of the humid soil layer moving down.
为了能够有效地从沙层中获得水分，植物的根系的伸长的速度必须大于湿沙层下降的速度。
Dynamic stiffness for lateral vibration of a viscoelastic floating pile in a nonlinear viscoelastic soil layer is investigated.
该文研究了非线性粘弹性土层中粘弹性悬浮桩侧向振动的动力刚度。
Under the action of wind, forced convection of air above ground and water evaporation of top soil layer will be greatly enhanced.
在风的作用下，地表上部空气的强制对流和表土层中的水分蒸发大大增强，对冻土层的热状况产生重要的影响。
The percentage of root biomass allocated to cluster roots increased in the soil layer supplemented with P in a split-root system.
在分根系统中，白羽扇豆的排根占根系干重的比例在局部供磷（羟基磷灰石）的土层中大量增加。
It was shown that the present regressive solution was consistent with the solution of torsional vibration in saturated soil layer.
最后将分析结果进行了对比，结果表明：本文的退化解和饱和土扭转振动解是一致的。
The seasonal wetting-drying cycles result in a down-slope creeping of the shallow soil layer, leading to progressive slope failure.
季节性干湿循环使得边坡浅层土体逐渐发生向坡下蠕变，以致边坡发生渐进累积破坏。
Under stratum condition of thick soil layer, we can study it as random medium and use probability integral method to estimate surface movement.
在厚松散层地层结构条件下，可将其视为随机介质，采用概率积分法预计地表移动变形。
The numerical calculation show that load transfer and settlement of composite groundsill is affected by the thickness and modula of soil layer .
计算结果表明，在进行复合地基载荷试验时，载荷板下的垫层厚度及变形模量会对复合地基的荷载传递特性以及沉降产生影响。
The damage form of thick sandy soil layer was revealed and the damage mechanism was primarily analyzed through the dynamic simulating model test.
通过动态相似模拟试验，揭示了厚砂土层破坏形态，并初步分析了破坏机理。
The damage form of thick sandy soil layer was revealed and the damage mechanism was primarily analyzed through the dynamic simulating model test.
通过动态相似模拟试验，揭示了厚砂土层破坏形态，并初步分析了破坏机理。
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