土壤养分遥感监测研究现状及展望

Research Progress and Prospect on Soil Nutrients Monitoring with Remote Sensing

土壤肥力状况信息可以为精准农田管理提供响应依据,对近年来遥感技术在农田土壤养分监测方面的研究进行了归纳与分析,总结为直接监测方法和间接监测方法。直接监测方法主要利用土壤光谱特征监测土壤养分含量,而间接监测方法则通过不同土壤养分水平下的作物表现特征来估算土壤养分状况。在全面比较两种方法各自优缺点的基础上,指出两种方法各有优势并可互为补充,通过结合可以有效提高监测的精度与全面性,并对土壤养分遥感监测的发展进行了展望。

Soil nutrition status information is an important premise for precise field management.Methods on remote sensing based soil nutrients estimation were categorized into direct and indirect methods based on an analysis and summarization of recent researches in the field.Direct method uses soil spectral characteristics to estimate soil nutrients,while indirect method uses the crop growing characteristics under different soil nutrition levels to evaluate soil nutrients.The comprehensive comparison of these two methods show that pointed that the methods have their own advantages and the combination of the two methods can effectively improve the precision and integrality of soil nutrients estimation.Prospects on soil nutrients monitoring with remote sensing were provided in conclusion.