查询词典 erosion

Combined a large number of on -site investigate and survey data of loess area in the north of Shaanxi Province, the paper analyzed the influence factors and interrelationship of slope erosion, then put forward the main influence factors , the peculiarity of outwash destructions the main style and protective measures about slope erosion of highway in loess area. The first: the emphasis about protective measures of cut-slope are the selection of rate of grade, the place of plain stage of slope, the slope protection; the second: the emphases about drainage of cut-slope is the rational installation and mating of drainage establishment; And following this principle: the effective holding up , the rapid obviating, the smooth articulation, the seepage prevention and prevent erosion.

根据陕北黄土地区公路的大量现场调查和实测资料，分析了公路边坡冲蚀的影响因素及其相互关系，提出了黄土地区公路边坡冲蚀的主要影响因素、冲蚀破坏特点、主要类型与防护对策，得出：1、路堑边坡坡面冲蚀防护重点是坡率选择、边坡平台设置、边坡防护；2、路堑边坡排水重点是排水设施的合理设置与配套；并遵循有效拦截、迅速排除、衔接顺畅、防渗防冲等原则。

Soil erosion in the loess plateau, is great environmental problem at present, and soil erosion monitoring is of great significance for stipulateing the countermeasures against soil erosion.

在我国，黄土高原的土壤侵蚀是目前举世瞩目的环境问题，土壤侵蚀监测对土壤侵蚀防治对策的制定具有重大意义。

In this paper,soil erosion during the railroading engineering is analyzed in a systematic way;including the scope of duty on prevention of soil erosion, the topographic units, easy to be erided and the dynamic factors for soil erosion,etc.

我国是一个水土流失比较严重的国家，人口众多、耕地少、水土资源相对匮乏，特殊的国情和复杂的自然条件，决定了水土保持在国民经济和社会发展中的重要的地位和作用[1]。

It showed the soil erosion was changing from sheet erosion to rill erosion.

表明坡面由片蚀为主逐渐过渡到片蚀向细沟侵蚀转变的阶段。

In addition, with the progress of runoff scouring, the form of soil erosion changed from sheet erosion to rill erosion.

李勇等(1991)和李勇(1995)通过对黄土高原地区乔灌植被根系与土壤物理性质关系的研究，证

Based on the problems of the change of erosion types on the slope, we used a new REE tracer method, by placing different rare earth elements of different soil depth across a slope in an indoor plot, simulated rainfall and INAA were applied to study sheet erosion changing to rill erosion on slope land.

提出并建立了一种新的利用REE元素研究坡面土壤侵蚀的方法根据坡面不同侵蚀方式演变过程定量分析存在问题，提出并建立了人为沿坡面垂直分层布设不同的REE示踪元素，利用室内人工模拟降雨试验和中子活化分析相结合的方法研究坡面侵蚀演变过程。

Soil erosion is widespread in the future should be strengthen the protection of grassland, afforestation, reduce the role of gully erosion and sheet erosion; should also note that the full utilization of water resources in the development of irrigated land, and substantial improvements in agricultural irrigation and drainage facilities to prevent flooding disasters.

水土流失现象普遍，今后应加强保护草坡，植树造林，减少沟蚀和片蚀作用；亦应注意水利资源的充分利用，发展水浇地，并大力改善农田排灌设施，防止水患灾害。

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 using the programs to process water depth data,the erosion and accumulation area can be found by drawing the contour diagram and stereogram about erosion and accumulation,and the corresponding erosion and accumulation weight and area sizes can also be calculated.

经程序处理后的水深数据，可以找出其冲淤区、绘制冲淤等值线图和冲淤立体图；计算出其冲淤量和冲淤面积。

Based on observation data, the development process of the breach of landslide dams due to over topping may divided into 3 modes: vertical erosion, breadthwise extension and regression erosion of dam slope. A mathematical model describing the gradual failure process of the landslide dams is established based on the formula expressing the high intensity erosion obtained from experimental data, which can integrate the 3 modes of breach development process together. The validity of the model is verified by observation data.

根据一般滑坡堰塞坝特点和实际观测到的堰塞坝溃口发展规律建立了一个溃口扩展模式，并将溃口扩展过程归纳为溃口垂直下切、横向扩展和坝坡溯源冲刷3种主要表现形式，采用通过试验资料建立的高强度泥沙冲刷计算公式将这3种表现方式联系在一起，建立了堰塞坝逐渐溃决数学模型，并利用实测溃坝资料验证了模型的可靠性。

Life. But the intrinsic way of the Internet by wire confines accessing and using of the network information.

然而，Internet固有的有线连接方式大大限制了人们对网络信息的访问和使用。

I have a strong persuasion that this is true .

我坚信这是正确的。