1. National Bureau of Statistics of China, China statistical yearbook of 2021, China Statistics Press, Beijing, China, 2021.
2. Y.C. Huang, D.D. Xu, S.Y. Bai, Y.H. Liu, Environment and Development 32 (2020) No. 11, 250–252.
3. S.Y. Zhao, W.D. Liu, China Water Transport 22 (2022) No. 4, 64–66.
4. X.H. Dai, Science 72 (2021) 30–34.
5. G. Kor-Bicakci, C. Eskicioglu, Renew. Sustain. Energy Rev. 110 (2019) 423–443.