**5. Conclusions**

Based on the empirical evaluation of the long-term coupling and coordination relationship between the environment and economic development in the key state-owned forest areas of Heilongjiang Province, the following conclusions are drawn:


**Author Contributions:** Conceptualization, X.L. and M.A.; methodology, X.L., M.A. and Z.W.; software, X.L., M.A. and Z.W.; validation, X.L., M.A. and Z.W.; formal analysis, X.L., M.A. and Z.W.; investigation, X.L., M.A. and Z.W.; resources, X.L., M.A., Z.W. and Z.Z.; data curation, X.L., M.A. and Z.W.; writing—original draft preparation, X.L.; writing—review and editing, X.L., M.A., Z.W. and Z.Z.; visualization, X.L., M.A. and Z.W.; supervision, M.A. and Z.W.; project administration, M.A. and Z.W.; funding acquisition, X.L., M.A., Z.W. and Z.Z. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research was funded by the International Young Talents Program (No. QN2022168001L), China and the Heilongjiang Provincial Key Foundation for Philosophy and Social Sciences (No. 21G-LA449), China.

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** The data supporting the findings of this study are available from the corresponding author upon reasonable request.

**Conflicts of Interest:** The authors declare no conflict of interest.

#### **References**

