摘要：Based on the study of the ecosystem of the Huizhou-Qingyuan section of the Shantou-Zhanjiang Expressway, this paper is taking the sub-tropical mountain ecosystem as a reference. The author is selecting indicators from the three aspects of the ecosystem’s composition, function and habitat. The paper is applying the mathematical analysis methods such as component analysis and non-repeating two-factor analysis of variance to obtain an index system including the diagnosis of the degree of ecosystem degradation in the subtropical mountainous areas.
