查询词典 soil

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。

Soil pH effect largerly for the number of groups of soil and the dividual number of soil animals,but the quantity of water effect lowerly in soil.

土壤pH值与土壤动物的类群数和个体数的相关程度较大，而土壤含水量与土壤动物的相关程度较低。

Based on soil desertification between agriculture and husbandry interlace zone in north of Shannxi Province, on the basis of theories of landscape ecology、land resource and principle of soil genesic science, through field surveying data and indoor analyzing, the properties of soil physical, chemical and biological characteristics are systemic analyzed about desertification soil of different vegetation cover rate and type, achieving primary achievements and important evolves are as follows:Ⅰ.

本研究基于当前全球荒漠化危害现状及国内外荒漠化防治中恢复生态学的发展需要，以陕北农牧交错带土地荒漠化问题为研究对象，应用景观生态学理论、土地资源学和土壤发生学的基本原理，在野外考察、资料收集和室内测定分析的基础上，对不同植被盖度和植被类型荒漠化土地的土壤理化性质和生物学性质进行系统分析，取得的主要成果如下： 1。

Although the theory of water and soil loss law and the echniques of integrated soil and water conservation measure of primary geomorphy have become quite mature by scientists' effort over several decades in the world, study to water and soil loss in constructional project is slow to developed country. Among researchers, there are many opinions on the model of water and soil loss caused by constructional project because it is serious shortage of data from observation or test in construction projects.

原生地貌水土流失规律和综合治理技术措施经过几十年的研究与探索，基本形成了较为成熟的理论体系和技术措施体系，但我国对开发建设项目水土保持的研究起步较晚，对水土流失预测的概念、内容还存在着不同的理解，特别是目前开发建设项目水土流失定位观测和动态监测数据十分缺乏，水土流失预测模式中的参数缺乏实验值，都是凭经验估计或参照坡面或流域水土流失预报方程中的参数取值，由此预测出的水土流失量误差极大，从而影响到水土保持措施的优化配置。

The study of the long-term dynamic change of soil organic matter and its affecting factors of geoponic practices were important for a comprehensive management on soil fertility. In this paper, based on the soil fertilizer monitoring data in 1980 and 1999 at county level, household survey and statistics data, the dynamic change of soil organic matter content and its affecting factors by relevant agricultural practices in the past twenty years were analyzed comprehensively.

本文以河北省曲周县为例，采用1980年和1999年两次全县的土壤肥力监测以及农户调查数据和统计数据，系统分析了过去20年中土壤有机质的动态及其与之相关的农作管理方式的变化。

The study of the long-term dynamic change of soil organic matter and its affecting factors of geoponic practices were important for a comprehensive management on soil fertility. In this paper, based on the soil fertilizer monitoring data in 1980 and 1999 at county level, household survey and statistics data, the dynamic change of soil organic matter content and its affecting factors by relevant agricultural practices in the past twenty years were analyzed comprehensively.

本文以河北省曲周县为例，採用1980年和1999年两次全县的土壤肥力监测以及农户调查数据和统计数据，系统分析了过去20年中土壤有机质的动態及其与之相关的农作管理方式的变化。

Root-derived organic carbon is composed of three compartments: root detritus, root eaudates and root symbionts, which represents a large important and potential C sink in forest ecosystems, The known responses of root derived organic carbon and heterotrophic microbes to elevated CO2 were reviewed. Overall, increases in root biomass, productivity, and exudation indicate an augmentation of C inputs into the soil via roots, although changes in root lifespan are still unclear and may modify this flux positively or negatively, Altogether, changes in root chemistry and morphology that may augment soil C storage under elevated CO2 include decreased N concentration and wider root diameter, Alternately, a shift in rooting depth upwards in the soil profile may increase average turnover rates of root detritus. Effects of CO2 concentration on C qualities of root exudates and root symbionts are the least understood components discussed here, Changes of soil heterotropic microbial activity and community under elevated CO2 still remained large uncertainties.

林木根源有机C包括根东通过根枯落物、根系分泌物和根共生菌周转3条途径向土壤输入的有机C，它是森林生态系统中一个重要的、潜在的C汇，综述了根源有机C与其微生物对CO2浓度升高的响应，虽然对根系寿命的变化尚不清楚，但CO2浓度升高将导致根系生物量、生产量、死亡量和分泌物的增加；同时，CO2升高亦促使根共生菌生物量的增加而增加了共生菌的C归还潜力，表明CO2升高使根源有机C的输入增加了，CO2农度升高情况下，根系化学性质和形态特征的这些变化均有利于增加土壤C的吸存；而根分布深度的降低则对土壤C吸存不利；CO2浓度升高对根分泌物和根共生菌质量的影响研究则极少，CO2浓度升高下土壤微生物活性和群落组成的变化存在较大的不确定性，目前CO2浓度升高下林木根源有机C对森林长期C吸存的贡献仍很不清楚。

Microbial biomass in soil profile showed negative relation with soil pH value and bulk density, while positive correlation with contents of soil organic carbon, light fraction and particulate organic carbon and fine root biomass were found. There were no significant difference between soil microbial biomass and DOC, total N, total P, hydrolyzable N and available P.

土壤微生物生物量垂直分布与土壤pH和容重呈负相关，与土壤的有机碳、轻组有机碳和颗粒有机碳含量及细根生物量呈显著的正相关，但与土壤可溶性有机C和全N、全P、水解性N和速效P含量的相关性不显著。

Based on the results of long term and position research,the dynamic change of soil water content in Taihang Mountain-piedmont Plain with the condition of aeration zone incrassation was studied.Some results are as follows: Soil water content changes with precipitation in different year;Season dynamic can be divided into three stages: accumulating,consuming and stable;Soil water content increases with the increase of soil depth.

本研究利用连续多年的土壤水分观测数据，分析了太行山前包气带土壤水分动态变化特征，结果表明：土壤含水量受丰水年枯水年影响存在年际差异，根据不同季节土壤水分的动态特点，可将其划分为三个时期，即土壤水分消耗期土壤水分累积期和土壤水分相对稳定期。

Based on equipotential models of some scholars, according to a practicable fact which large substation grounding grids are not equipotential any longer, in inequipotential model, the paper analyzes the influence of the soil resistivity and the grounding grid area on the optimum arrangement in the uniform soil; the paper analyzes the reflective coefficient of double-layer soil, the top-layer soil thickness and the grounding grid area on the optimum arrangement.

为了使地表面的电位均匀分布，进一步降低接触电压和跨步电压，更好地保障人身和设备的安全，本文提出了接地网的优化设计方法。

What would he tell Judith and the children?

他将怎样告诉朱迪丝和孩子们呢？

I this is at that time, the opinion with peacockish true girl is full of in a heart.

这就是当时的我，一个心中布满虚荣的女孩子真实的想法。