查询词典 eluviation

This paper systematically summarized and analyzed general development characteristics of soil profile CaCO3 in Loess hill gully area including source, content, forming-condition, distribution and illuviation- depth of CaCO3, which will have the most important significance for the further studies on global soil and climate change.Soil CaCO3 eluviation-illuviation is a relatively complicate process, soil CO2 is one of the important effect factors, which influences soil CaCO3 through controlling soil pH value and CaCO3 solution capability.

碳酸钙在土壤剖面中淀积的深度和类型是黄土高原土壤发育的重要标志，钙积层是黄土高原土壤发育环境的历史信息库，同时土壤碳酸钙作为土壤无机碳库重要组成，它通过溶蚀后再结晶与大气CO_2之间进行物质交流来影响全球气候变化。

Results show that Cu, Zn, Pb, and Rb were relatively enriched in the buried paleo-surface horizon (2A) and paleo-argillic horizon (2Bt), where natural pedogenic eluviation and illuviation was playing a main role. Under the relatively warm and moist climate, Sr leaching was strong, showing entirely contrary distribution characteristics with obvious loss in the horizons of 2A and 2Bt.

结果表明，受介质的吸附、碳酸钙等易淋溶组分的淋溶淀积、作物吸收等因素影响，痕量元素Cu、Zn、Pb、Rb在剖面上总体呈中高型分布，即在干润淋溶土表层（2A层）和黏质化B层（2Bt层）含量有所增加而表现为富集；而Sr则发生强烈迁移，在2A层、2Bt层含量显著降低。

This is not surprising, given the closer proximity of Pengyang to the Asian inland dust sources; The average content of calcium carbonateis of Pengyang section is not only higher than that of central loess plateau, but also higher the west of Chinese Loess Plateau, which reflected Pengyang loess had been deposited by near Liupanshan\'s substances that contained more calcium carbonateis; The content of diffluent element of 10m depth in the section increased fast, which indicated that the modern eluviation and the leaching depth of loess may be stronger than our guess; The soil growth index can reflect the intensity of soil forming and the climatic changes; The "abrupt chang" of glacial and interglacial period was caused by strong soil-forming processes that enlarged the discrepancy of granularity between loess and paleosol. However, the magnetic susceptibility nearly cannot reflect the existence of S_8 and the magnetic susceptibility of S_7 is highest in the whole section, which is inconsistent with other studies that S_5 has the highest magnetic susceptibility.Thin-section examination shows that the micro-texture of the soil layers is divided into both cementing texture in S_7, S_5 and S_1, and granular texture in all others.

与其它剖面相比，彭阳剖面粒度总体上要比东部的洛川、西安，甚至西部的兰州、新疆东湾要粗；CaCO_3平均含量不仅高于黄土高原中部，也高于高原西部，反映出本剖面富含碳酸盐的六盘山近源沉积起到了很重要的作用；易溶元素含量在剖面10m处快速升高，淀积特征明显，反映出黄土受现代淋溶成土作用影响较大，黄土直立、疏松、多孔特性和高温与多雨组合的气候特点，使得元素淋溶、淀积的强度和深度超出了传统的认识和判断；烧失量与其它指标相比，不仅能区分冰期、间冰期；而且能够区分出次一级的冰阶、间冰阶，有较高的分辨率；土壤发育指数、红度能够反映土壤强度差异，是反映气候波动的较好指标；然而，磁化率不能反映古土壤S_8的存在，且S_7的磁化率在全剖面中最高，这与大多剖面S_5磁化率最高的特点不一致。4。

The samples were taken from the slope of Haizhou Opencast Mine in Fuxin city.The results show that some components,such as the total hardness and sulfate,above-norm seriously in the beginning of the leaching experiment,and then became stable rapidly with the increasing of eluviate volume,and the pH values of eluviation solution more than seven.Haizhou surface mining will effect the groundwater for 20-25 years.

对从阜新海州露天煤矿岩质边坡取得样品的淋溶实验表明：淋溶初期总硬度、硫酸盐等组分严重超标，各组分随淋溶总体积的增加迅速趋于稳定；淋溶过程中pH＞7，淋溶液偏碱性；海州露天矿开采会对地下水影响20～25 a。

Bidentis were studied by adopting indoor bioassay. The results showed that the volatile matter of F. bidentis had not allelopathy to four receptor plants. The eluviated matter inhibited seedling growth of cotton obviously, the inhibition ratio of root and stem were 6.29% and 10.42% respectively. The aqueous extract of litterfall and root exudates had different inhibition to four receptor plants, The synthesis effectof all treatments was significantly greater than eluviated matter treatment except for B3 of the aqueous extract of root exudates, such as the synthesis effect of all treatments (A1, A2, A3, B1, B2, B3 and eluviation) were 44.74, 29.37, 14.5, 31.54, 16.52, 3.55, 1.48 respectively.

结果显示：黄顶菊自然挥发物对受体植物不表现化感作用；黄顶菊淋溶物对棉花幼苗生长表现出明显的抑制作用，对棉花幼苗高度和根长的抑制率分别为6.29%和10.42%；黄顶菊枯落物浸提液和根系分泌物浸提液对4种受体植物均表现出不同程度的抑制作用，除了黄顶菊根系分泌物浸提液 B3处理外，其它处理的综合效应均显著大于淋溶物处理，如黄顶菊枯落物浸提液（ A1、 A2、 A3）、根系分泌物浸提液（ B1、 B2、 B3）以及淋溶物等各处理对受体植物的综合效应分别为44.74、29.37、14.5、31.54、16.52、3.55、1.48。

The measured porosity data and the observations of thin sections and blue epoxy resin-impregnated thin sections show that the diagenesis in the Qingshui sag can be divided into two stages and five substages. There exist three abnormally high porosity zones vertically in the Cenozoic reservoirs in the Qingshui sag, Liaohe Depression, whose genesis is related to the eluviation of precipitation and the dissolution of organic acid.

根据岩心实测孔隙度、薄片观察、铸体薄片和扫描电镜等实际资料，将辽河盆地西部凹陷清水洼陷新生界成岩作用划分为早成岩阶段和中成岩阶段2个阶段，其中包括5个亚期，指出该洼陷新生界纵向上发育3个异常高孔带，这种异常高空带的形成与大气降水淋滤作用和有机酸对储层的溶蚀作用有关。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。