Carbon (C), nitrogen (N), and phosphorus (P) are basic elements constituting a plant body and are of great significance to the growth and function of plants [1,2]. C, N, and P in the soil are critical elements that can restrict plant growth; they are also quantitative indices for measuring the degree of soil fertility and important indicators of the ecological functions of soil [3]. It is worth noting that the cycle characteristics of C, N, and P in forest ecosystems are remarkably variable in different regions under the influences of different biological characteristics, forest management methods and regional climates [4,5]. Hence, studying the stoichiometric characteristics of forest ecosystems