Acknowledgments
This work is carried out at the College of Resources and Environment,
Southwest University, supported by the Fundamental Research Funds for
the Central Universities (No. SWU 020010), the Natural Science
Foundation of Chongqing (No. cstc2021jcyj-msxmX0827) and Chongqing
Returned Overseas Students’ Entrepreneurship and Innovation Support
Program (No. cx2021001).
Data availability statement: Data sharing not applicable to
this article as no datasets were generated or analysed during the
current study.