In the novel, the division of the forest could be determined by many factors, such as the size of the forest, geographical location, climate conditions, and so on. Generally speaking, forests can be divided into different levels. These levels are from low to high: shrubs, woods, forests, forest ecosystem, and forest reserves. The ecological environment and biological richness of the forest would be different at different levels. In addition, in the novel, the forest could also be divided according to its function. For example, according to the coverage rate and ecological function of the forest, the forest could be divided into different categories such as ecological forest, economic forest and landscape forest. It should be noted that the division of the forest in the novel may be different from the division of the forest in the real world. The specific situation needs to be determined according to the plot and setting of the novel.