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土壤盐分及其光谱特征是土壤盐渍化高光谱遥感定量监测的基础研究内容。茶卡-共和盆地位于柴达木盆地东部边缘,是土壤盐渍化比较典型的区域之一。在研究区盐渍土野外调查采样的基础上,依据土壤理化分析和实验室光谱测量数据,对土壤盐分及其光谱特征进行了分析,总结了茶卡-共和盆地盐渍土光谱特征随土壤盐分含量的变化规律。研究表明:该区域盐渍土为氯化物盐土,以NaCl和MgCl2为主,有少量的硫酸盐;不同含盐量的盐渍土具有明显的光谱特征差异。
Soil salinity and its spectral characteristics are the basic research contents of quantitative monitoring of soil salinization hyperspectral remote sensing. Tea card - Republican basin is located in the eastern edge of the Qaidam Basin, is one of the more typical areas of soil salinization. Based on the field survey of saline soil in the study area, the soil salinity and its spectral characteristics were analyzed based on the data of soil physical and chemical analysis and laboratory spectroscopy. The spectral characteristics of saline soil in the Chaka-Gonghe Basin were summarized as follows: Content of the law of change. The results show that the saline soil in this area is chloride salt soil, with NaCl and MgCl2 as main components, and a small amount of sulfate. Saline soil with different salt contents has obvious spectral characteristics.