遥感反演地下水位方法的比较研究

Research and comparison of remote sensing retrieving water table methods

本文回顾了国内外利用遥感技术反演地下水位的研究成果,依据地下水与地表参数的作用原理,归纳为四种地下水位反演方法,即分别从土壤水分、地表温度、植被指数和地下水流系统的角度进行地下水位反演。详细论述了各种方法的原理和模型,并从模型反演精度、前提条件和适用范围对四种方法进行比较分析。最后进行了总结和展望,对今后的工作重点和研究方向提出了建议,认为建立多因子反演模型、提高地表参数和地下水位反演精度是今后研究的方向。

This paper reviews the national /international study on remote sensing retrieving water table.According to the principal between groundwater and surface information,it is divided into four kinds of methods,which retrieve water table from soil water content,surface temperature,vegetation index and groundwater flow system respectively.The principal and model of each kind is discussed in detail and is compared with each other upon retrieving precision,precondition and applicable area.To sum up,it is considered that founding multiple parameter models,improving retrieving precision of surface parameter and water table are the key direct of future study.