Exploring the Current Status of the Development of Desert Change Monitoring Methods

The increasingly serious desertification phenomenon poses a severe challenge to the ecological environment, and it is urgent to strengthen the monitoring of its dynamic changes. This paper aims to summarize the current status of several desert change monitoring methods and compare and analyze the advantages and disadvantages of several monitoring methods. This paper concludes that traditional digital mapping has high accuracy, but there are still limitations in terms of safety, scale, and other related issues. The coherence analysis technology like SAR is susceptible to subtle changes in the desert and is often used as an important means for qualitative analysis of desert changes, but there are technical bottlenecks in terms of quantitative parameters. In addition, due to the limitations in monitoring range and accuracy, traditional methods are currently mainly used as basic and auxiliary means. The current remote sensing monitoring methods have made progress in accuracy and scope, but still need to be combined with multiple monitoring methods to complete a complete qualitative and quantitative analysis.