吉林省西部典型盐渍化土壤偏振反射高光谱特征与模型研究

Study on the Polarized Reflectance Hyperspectral Characteristics and Models of Typical Saline Soil in the West of Jilin Province,China

近年来,吉林省西部盐渍化土壤面积不断扩大,土壤质量退化日趋加剧,不但对该区域的土地资源造成了严重的破坏,而且对农业生产和生态环境构成巨大的威胁。该研究将遥感信息中的偏振信息和高光谱信息相结合,通过对吉林省西部盐渍化土壤光谱特征的获取,选择合适的波段,建立普适模型,并进行科学验证。研究表明,盐渍化土壤的偏振高光谱信息与其理化属性参数具有一定的相关关系,并具有规律性,这对盐渍化土壤表面反射机理研究、盐渍化土壤目标与背景的识别、分类,土壤偏振传感器的研制、偏振光遥感信息的利用以及定量遥感的发展均具有重大理论意义。

In recent years,the area of saline soil in the west of Jilin Province expands increasingly,and soil quality is becoming more and more worsening,which not only caused great damage to the land resources,but also posed a huge threat to agricultural production and ecological environment.We combined with polarized and hyperspectral information to establish the general model and scientifically validated it.The results show that there is a strong relationship between the saline soil hyperspectral polarized information and its physicochemical property parameters,and with regularity.This paper has important theoretical significance for the mechanism of saline soil surface reflection,recognition and classification of saline soil and background,the utilization of soil polarization sensor and the development of quantitative remote sensing.