黄土的

The morphology of these grains reveals that the iron sulfides originated from the eluvium loam above hypothetical ore deposits in the vicinity of the section or glaciofluvial sediments from nearby glacial margins.

磁性矿物颗粒的形貌特征进一步揭示Znojmo地区黄土/古土壤所含黄铁矿或磁黄铁矿主要由附近源区搬运而来，冰缘沉积物和周围台地的风化剥蚀物是黄土物质的主要来源。

Twelve soil samples from 0~20 cm soil layer were collected from north to south in the Loess Plateau calcareous soil and analyzed for fractionation of organic and inorganic soil phosphorus by Hedley method, amended by Tiessen and Moir.

以黄土高原自北向南采集的12个0~20 cm耕层土壤为供试土样，采用Tiessen和Moir修正的Hedley土壤有机无机磷分级方法研究了黄土高原石灰性土壤中不同形态磷组分的分布特征。

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。

As the representative of the northern Loess Plateau gully region, the soil quality under different cultivation length of the orchard in Changwu county was studied. Using partial correlation coefficient to determine the weight, combined with evaluation of membership Sanction to evaluate soil quality levels of the area, the trend of orchard soil quality under different cultivation years was analyzed. The results showed that the IFI values of orchard soil were between 0.22 and 0.70, 27% of them reached the second soil quality standards, 64% reached a third-level soil quality standards, 9% met the fourth standards of soil quality.

以长武北部黄土高原沟壑区为代表，研究了不同果园种植年限下的土壤质量现状，运用偏相关系数法确定权重，结合隶属度函数评价了该地区土壤的综合肥力水平，分析果树种植中土壤质量随着种植年限的变化趋势，结果表明：黄土沟壑区果园土壤IFI值在0.22~0.70，其中有27%达到了2级土壤质量标准，64%达到了3级土壤质量标准，9%达到了4级土壤质量标准。

According to the result of artificial rainfall, the character and factors affectedby soil, rainfall, chemicals, slope length, slope gradient and field mangment practices, for rainfall, runoff,infiltration, soil erosion and soil chemicals, such as NO_3~-, NH_4~+, PO_4~(3-), K~+ and Br~-, are investigated. Thedeterminate methods, influence factors and practical application of the mixing zone depth are also researched.The results can enrich the dynamics of soil, water and nutrient transport, evaluate the soil water and fertilizerefficiency, and theoretically benefit the research of agricultural NSP on loess hill slope. 1. According to the surface transport experiments of soil chemicals under the non-satuation soil and watererosion condiction, for adsorbed PO_4~(3-) and K~+, the time of sheet erosion and rill erosion initiation is coincidentthat of chemicals content in surface runoff climbs, and then their abundant export by surface runoff is urged.

本文以黄土坡地为研究对象，通过模拟降雨试验，研究土壤因素、降雨因素、化学物质理化性质、坡长坡度因素和农田管理措施等对坡地降雨—产流—入渗—土壤侵蚀—农田NO_3~-、NH_4~+、PO_4~(3-)、K~+和Br~-地表迁移的影响，研究非饱和土壤和水蚀条件下混合层深度的确定、影响因素和模拟，探讨其在黄土坡地的实际应用，为丰富坡地水分养分迁移动力学、提高旱地土壤水分养分利用率和深化农田非点源污染研究提供理论依据。

By analyzing subsidence mechanism and action mechanism filling sienna, the way of decreasing roof destruction and surface subsidence is obtained.

分析了地表出现大面积沉陷区的机理，并通过对黄土充填作用机理的研究，指出运用黄土充填法可以有效地降低顶底板破坏程度及地表沉陷区的治理。

The research and analysis of the loess cave dwelling disaster not only has the engineering background,but also has important humanity and ecological significance.

黄土窑洞是目前世界上建筑面积最大的地下工程群体，研究黄土窑洞病害问题不仅具有工程背景，也有重要的人文和生态意义。

Taking Minhe area, especially the Heifang platform for example, the effect causes by irrigation in are analyzed. And for the sustainable development of agriculture in loess plateau, some agricultural measurers are put forward, such as advanced water saving irrigation techniques, optimizing the agricultural configuration, combining with project to improve the geological environment.

以民和地区，尤其是区内生态地质问题严重的黑方台为例，论述了黄土高原农业灌溉对生态地质环境的影响，提出从治水入手，改进灌溉方式，优化产业结构，并配合工程措施、生物措施以改善农业地质环境，促进黄土高原农业可持续发展。

Charcoal content in the eastern and western Loess Plateau was different on the different period of Holocene because of different environment conditions.

在全新世不同时期，黄土高原东、西部的炭屑含量存在一定差异，黄土高原东部火活动较为微弱，而西部火活动相对频繁，这是火环境条件区域差异性的表现。

According to different spatial strikes of loess hidden cave ,the disaster-causing effect of loess hidden cave on highway bridge is divided into two modes: toppling-failure mode and sliding-failure mode.

根据黄土暗穴空间走向的不同，将黄土边坡桥基下伏暗穴对桥梁的危害归纳为倾倒破坏模式和滑塌破坏模式。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。