包气带

根据湛江市浅层地下水水文地质状况，在特定情况下对DRASTIC模型进行合理简化，选取包气带岩性、厚度与结构、地形作为评价因子，并利用GIS技术编制浅层地下水防污性能分区图。

According to particular conditions of Zhanjiang city 's hydrogeological condition , DRASTIC model is simplified specifically and zone of aeration ( thickness , lithology , structure ) as well as topography is selected as assessment factors of shallow groundwater .

为了说明的目的，包气带的传统划分是有用的。

Such a traditional division of the zone of aeration is useful for illustrative purposes .

包气带水气二相流CO2运移规律

Characteristics of Water-gas Two-phase CO_2 Transport in Unsaturated Zone

包气带土壤对Eu（Ⅲ）的吸附

Adsorption of Eu (ⅲ) on Aerated Zone Soil

pH值对包气带土壤吸附铅和汞的影响实验

Experimental research on the pH influence of lead and mercury absorption on the soil in the unsaturated zone

COD在包气带地层中自净能力的试验研究

Experimental study of the self-purification capacity of COD in the aeration zone layers

~（85）Sr在黄土包气带中的迁移

Migration of ~ ( 85 ) Sr IN LOESS AERATED ZONE

试验结果符合COD在包气带地层中的一般降解规律。

The experimental result agrees with the general relieving law of COD in the aeration zone layer .

通过黑箱模型，确定了COD经包气带地层的变化量。

By using the black ? box model , the variation quantity of COD passing the aeration zone layer is determined .

包气带中~（85）Sr迁移的浓度双峰分布数值模拟研究

Numerical modeling of ~ ( 85 ) Sr migration in aerated zone with the characteristic of double peak concentration distribu-tion

模型II包气带由两个水平土层构成，上层的空气渗透性大于下层，每一层都为均质介质。

Model II is a system composed of two horizontal layers . Each layer is homogeneous and the upper layer is more permeable than the lower one .

基于VBA程序的理论分析表明，在排水早期，砂柱包气带中存在大量的水。

Theoretical analyses based on the VBA program show that there is a substantial amount of water in the vadose zone at earlier times of drainage .

前言：介绍了DRASTIC模型的七个评价因子：地下水埋深、含水层净补给量、含水层介质类型、土壤类型、地形坡度、包气带介质I的影响和含水层的导水系数。

The paper introduces seven factor of DRASTIC model : Depth of water table , Net recharge , Aquifer media , Soil media , Topography , Impact of Vadose Zone and Hydraulic Conductivity .

水特征曲线测量、水分运移的现场观测以及用3H作为示踪剂的现场示踪试验被同时用于水分在包气带浅部黄土运移研究之中。

Three methods were used in this research . They are water retention curve measurement , field observation of moisture movement and field nuclide migration test used 3H as tracer .

沙漠地区包气带土壤中的NO3与生态环境密切相关，与地下水的安全有直接联系。

In desert area , the nitrate in the vadose zone is always crucial to the ecosystem , and has directly effect on the safety of groundwater .

为了保证生产，大量化肥的施用影响着包气带土壤中的NO3。

Therefore , excessive chemical fertilizers have been used in order to ensure the production . The conduction returns to impact the nitrate in the vadose zone .

此外，地形地貌通过对水、气、热的再分配控制着包气带土层中Cl-的迁移方向和富集区域，导致区内土壤w（Cl-）随地形地貌变化十分显著。

Further , Topography through redistribution of water , gas and heat controls the direction of the Cl-migration in the unsaturated zone soil and enrichment region . As a result the soil Cl-content is very significant within the changes in topography .

因此，在环境地质与地下水污染的防治研究中，要全面考虑污染物质种类与包气带种类、厚度及pH值等相关因素。

Thus , it is suggested that in the studies On environmental geology and groundwater pollution control the relative factors should be fully taken into account , including the kinds of contaminants , the kinds and thickness of aeration zone , and the pH value .

本文叙述了放射性废物中具有代表性的裂变核素~（90）Sr，~（137）Cs在某种包气带土壤中的迁移情况研究。

This paper represents the study of migration of ~ ( 90 ) Sr and ~ ( 137 ) Cs in a kind of aerated zone soil . The water dynamics nature of this soil was studied by tritium water experiment .

NO3-迁移模型预测，大部分NO3-可穿过8m的包气带到达含水层；

The NO 3 - transportation model predicts that large parts of NO 3 - can pass the 8 m vadose zone and arrive at the aquifer , with the denitrification effect .

本文同时使用上述两种方法对85Sr在黄土包气带中的迁移规律进行了试验研究。

These two methods were simultaneously used to study migration of 85 Sr in loess aerated zone .

分别以稳定核素Sr、Nd、Ce为示踪剂，再次进行了野外现场包气带实验，最终结果表明源项介质同黄土介质的分配系数Kd的差异可能是导致出现双峰现象的真正原因。

The field experiments in unsaturated zone were also conducted by using the stable isotope tracers of Sr , Nd and Ce . The results verified such doubles peaks might be caused by the difference of K d between the source and loess layers .

本文介绍了237Np、238Pu、241Am和90Sr在包气带黄土、含水层和工程屏障材料（膨润土、水泥、变质水泥、水泥砂浆粉）中迁移行为的野外试验的方法和结果。

This paper introduces the field migration tests of 237 Np , 238 Pu , 241 Am and 90 Sr in aerated loess , aquifer and engineering barrier materials .

生物通风技术（BV）是一种广泛应用于有机化合物污染包气带土壤的生物修复技术，可处理石油污染物中的轻组分和重组分，与SVE相比，尾气的处理成本也大大降低。

Bioventing ( BV ) is a widely applied bioremediation technology for removal of organic compounds from unsaturated soil . It can be used to treat light and heavy components of petroleum contamination and can reduce the cost of tail gas treatment comparing with Soil Vapor Extraction .

最后，用HYDRUS-1D模型对灌溉后包气带土壤水分运移进行了模拟，从模拟效果看，模型总体模拟效果较好，能反映出各深度土壤水势的动态变化趋势。

The irrigation water recharges the groundwater through the8D & δ 18O distribution map . Finally , using HYDRUS-1D model simulates the soil water movement in vadose zone after irrigation . From the simulation results , the model simulates much better , reflecting the changing trends of soil water potential .

包气带土体反硝化作用对NO3~-转化的试验研究

Effect of Denitrification on Transformation in the Unsaturated Zone of Soil

而不同土壤层渗透系数之间有明显差异，故整个包气带为非均质。

The permeability coefficient has more difference in different soil layers .

利用包气带水分体积分数计算水资源评价参数

Calculating water resources assessment parameters by using vadose water volume fraction

沙漠包气带水分运移机理研究

Study of the mechanism of moisture transport in desert unsaturated zone

包气带中铅的垂直污染机理研究

Research on the Mechanism of Lead Vertical Pollution in Unsaturated Zone