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一、引言土壤是地球表面主要的覆盖物之一。一般来说,土壤的反射光谱除了与本身的成分和物理结构有关外,土壤的湿度,即含水量也是决定性的因素之一。土壤的含水量不仅对农作物的生长具有重要的影响,而且对水资源的调蓄管理亦有重要的意义,因此利用遥感技术来进行土壤含水量的大面积探测是农业和土壤遥感方面一项十分引人注目的课题。当前,在土壤含水量的遥感探测方面。应用比较普遍的工具是微波遥感和热惯量遥感,采用反射光谱特性进行土壤湿度探测的研究目前尚不多。
I. INTRODUCTION Soils are one of the major coverings of the Earth’s surface. In general, the soil’s reflection spectrum in addition to its composition and physical structure, the soil moisture, that is, water content is also one of the decisive factors. Soil moisture content not only has an important impact on the growth of crops, but also has important significance for the regulation and management of water resources. Therefore, the large-scale detection of soil water content by remote sensing technology is a very important step in the field of agriculture and soil remote sensing A compelling topic. Currently, in the field of remote sensing of soil moisture content. The most commonly used tools are microwave remote sensing and thermal inertial remote sensing, and there are not many studies on the detection of soil moisture using reflection spectrum.