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中文摘要：
常用的土壤介电模型一般都是针对非盐渍化土壤提出来的,对于干旱区盐渍化土壤,模型对于介电常数虚部的描述与实际测量情况有一定差距。为了更好地深入研究干旱区盐渍化土壤介电常数特性,该文选择盐渍土介电模型（修正的含水含盐土壤Dobson介电模型）作为典型研究区盐渍化土壤介电常数的基础模型,模拟分析土壤介电常数对模型参数的响应,在野外实测数据的支持下验证了盐渍土介电模型的适用性。研究结果表明：1）在低频区域（0.5
英文摘要：
Due to its unique superiority on soil property monitoring, microwave remote sensing is considered to be one of the most valuable means of soil property detection. Being a property of soil related to moisture in arid and semiarid regions, the salinity of soil has negative impact on crop yield. But there is little formal study corresponded to the application of microwave remote sensing on monitoring of soil salinity. Additionally, the dielectric properties are the basis of microwave remote sensing for earth observation, and also the key parameters of relationship establishment between the backscattering coefficient and soil parameters （moisture, salt content）. In the present study, the corrective moist salt soil Dobson dielectric model was adopted as a fundamental model to simulate the soil dielectric constant. We also analyzed the response of soil dielectric constants to model parameters and verified the applicability of the corrective moist salt soil Dobson dielectric model by using field collected data at Wei-kuqa river oasis. We found that： 1） In low frequency regions （i.e., 0.5 f 5 GHz）, soil dielectric constant has an obvious response to soil volumetric water content and soil salt content;2） With a relatively high correlation coefficient （R 0.95） of the corresponding linear regression model, the soil moisture content significantly correlated to the real part of soil dielectric constant; 3） Based on obvious response of imaginary part of soil dielectric constant to soil salt content （R=0.86）, soil salt content determines the value of soil dielectric constant imaginary part. In the low frequency region, soil dielectric constant significantly correlated to the volumetric water content and soil salt content. In all frequency regions of studied electromagnetic wave, the real part of permittivity had a significant response to the soil volumetric water content, and it increased with the increasing of water content. As to the imaginary part of the permittivity, dielectric constant slightly incr
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