土壤重金属高光谱反演研究综述

Review of Hyperspectral Remote Sensing Retrieval of Soil Heavy Metals

土壤是地理环境统一体的重要组成要素。目前,由人类活动造成的土壤重金属污染对土壤生态环境和人类身体健康构成了严重威胁。快速获取土壤中重金属含量是治理土壤重金属污染的前提。高光谱遥感技术的发展为快速高效定量监测土壤重金属含量提供了科学的手段。通过对近20年利用高光谱遥感实现土壤重金属定量反演的方法以及不同光谱处理对反演模型精度的影响等方面的总结以及定量反演土壤重金属含量的基本流程及实现间接反演土壤重金属的相关性元素的简要概述。发现反演模型决定了反演精度,光谱预处理影响反演精度。最后探讨分析了高光谱遥感在土壤重金属研究方面的不足以及发展趋势。

Soil is the important component of the geography environment.Today,soil heavy pollution has badly threaten to ecology environment and the human health,causing by human activity.Quickly obtain content of the soil heavy metals is the premise of managing the soil heavy metal pollution.And the development of the hyperspectral remote sensing technology offer a scientific means for quantitative measuring the content of the soil heavy metals.By summarizing the ways of quantitative inversion of soil heavy metals using hyperspectral remote and the influences to models affected by different spectral progresses,near the twenty years.At the same time,making a brief overview to the route of soil heavy metals inversion and the indirect inversion's correlative elements.Results show that inversion model decides the inversion accuracy,and the accuracy is affected by the pre-progresses of spectrum.Last,discussed theshortages and trendency of the hyperspectral remote sensing used in soil heavy metals.