The protection of soil and water is a key element of the environmental benefits of urban forests, as well as the foundation of other forest benefits. Traditionally, when investigating the benefits of forest water use and overall soil protection, they considered soil erosion and ignored the study of water loss. It is proposed to use forest water loss rate and soil erosion rate to investigate forest soil loss and soil erosion rate. This new index can be used to study urban precipitation rate and soil erosion rate. As a steganography algorithm, FEMD provides higher embedding and better image quality density. By studying this improved algorithm, it will be possible to better measure the rate of forest land erosion. In recent years, within the framework of the green economy, various levels of practical research have been conducted on the development of China's circular economy. For the regional economy, it has become an important choice for accelerating the transformation of development mode, introducing new characteristics of differentiated development, becoming a region that avoids homogenized competition and improves its inherent advantages and achieves the mainstream of sustainable development. Based on the characteristics of regional economic development and the requirements of differentiated competition, this article is based on the regional economy and regions with green economy as the main direction, examines the development of regional green economy from the perspective of regional differences, and analyzes the significance of the macroeconomic background and related theories. It also discusses the concept category, evolution process, evolution trend, and connotation characteristics of green economy of the county. [ABSTRACT FROM AUTHOR]