土层

In total, 69 species of seeds were recorded in the soil seed bank, with a very low density of germinable seeds and most of them were buried in 2~5 cm in soil. Seedling density of C.

福建青冈天然林土壤种子库有69种植物种子，但种子数量较少，且分布不均匀，种子库中78.42%种子分布在2~5 cm土层中。

The soil under grassed elleyways had higher NH4+,and K,but lower NO3- than the soil under herbicide strip,with exception that the soil in the layer of 0～10 cm under herbicide strip had higher content of K.

施肥增加土壤速效N的含量。土壤NO3-的季节性变化表明5至6月份土壤中NO3-的含量高，而花前和7月份土壤中NO3-含量低。P、K在清耕带10 cm以下土壤的含量低于生草地土壤，但在0～10cm土层中K的含量高于生草地。P的含量不受影响。

Soil Ca2+ content increased by 0.749mmol/kg, Mg2+ content increased by 0.169mmol/kg, the Na++ K+ content dropped by 9.52mmol?kg, SO42- increased by 0.091mmol?kg, Cl- reduced by 1.727mmol?kg, the HCO3- content in the soil assumed the obvious dropping tendency, it might be explained that the advancement of HCO3- has transformed into CO32- in the oasis, and has formed precipitation with two price calcium magnesium heteropolar ,then fix in the soil layer.

4土壤Ca2+含量增加了0.749mmol/kg，Mg2+含量增加了0.169mmol/kg ，Na++K+含量下降了9.52 mmol∕kg，SO42-增加了0.091 mmol∕kg， Cl-降低了1.727 mmol∕kg，土壤中HCO3-的含量呈明显下降趋势，可解释为在绿洲化进程中HCO3-转化为CO32-，并与二价钙镁离子结合形成沉淀固定于土层中。

The results showed that AM fungi had a relatively high hyphal colonization rate on the roots of A.

结果表明，在各样地0～50cm土层中油蒿根系AM真菌菌丝定殖率均很高，有典型的泡囊与丛枝结构。

So the hysteretic damping can be analyzed in the time domain.

从而为利用滞后阻尼系数在时域中进行土层地震反应分析提供依据。

Through experiment of 15N microplot showed that: gaseous losses of fertilizer nitrogen was 1.259g·m~(-2), soil residued nitrogen was 1.023g·m~(-2) in Ecological Balanced Fertilization plot, monitored at the same time that chemical nitrogen fertilizer was almost no leakage because there was illuvial layer in the depth of 100～120cm in this area.

通过15N微区试验测得草甸黑土生态平衡施肥区肥料氮气态损失为1.259g·m~(-2)，土壤残留为1.023g·m~(-2)，同时监测到，在该地区100～120cm土层处由于有淀积层的存在，化学氮肥几乎没有渗漏。通过设置不同施氮水平试验，结果显示：大豆播种后，田间土壤氨挥发累积量随氮肥用量增加而增大。

The strength reduction and the deformation incensement of supporting layer of the bases after saturated should be studied.

更多饱水后的强度降低率和变形增加率，当存在淤泥、软土、膨胀性土、湿陷性黄土等不良土层时，应进行相应的勘察试验工作。

The safety of the existing buildings should be decided based on the loading of the building, the foundation type as well as the buried depth of the foundation. The strength reduction and the deformation incensement of supporting layer of the bases after saturated should be studied. The corresponded investigations and tests should be carried out when silt, soft soil, expansive soil and collapsed loess et al exist in the bases.

对于现有建筑物的安全，要根据建筑物荷载、基础类型和砌置深度分类进行评价，研究了解地基持力层在饱水后的强度降低率和变形增加率，当存在淤泥、软土、膨胀性土、湿陷性黄土等不良土层时，应进行相应的勘察试验工作。

Intercalation of metal complexes into the interlamellar space of clay is an excellent method for homogeneous catalyst heterogenization .

粘土的可膨胀的二维空间有助于将催化活性的金属络合物用阳离子交换法和配位体交换法插入到粘土层间，因而易于制得粘土层间金属络合物催化剂，这是匀相催化剂多相化的一种好方法。

Project Plan: The quantity and quality of the mineral water in Gongmen town is invariableness.

项目建设内容与规模：张家川县恭门乡矿泉水其水量水质稳定，可以确认，深度地下水质均符合GB8537—87的要求，且有34.09m厚度的隔水粘性能土层，以防止浅层地下水污染对其渗透。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失