Submitted on: 09 June 2021.
Revised on: 20 September 2021.
Accepted on: 03 November 2021.
___________________Geography and Sustainability---ELSEVIER
http://reply.papertrans.cn/2/106/10592/10592-12.png
http://reply.papertrans.cn/2/106/10592/10592-13.png
http://reply.papertrans.cn/2/106/10592/10592-14.png
http://reply.papertrans.cn/2/106/10592/10592-15.png
http://reply.papertrans.cn/2/106/10592/10592-16.png
http://reply.papertrans.cn/2/106/10592/10592-17.png
http://reply.papertrans.cn/2/106/10592/10592-18.png
http://reply.papertrans.cn/2/106/10592/10592-19.png
http://reply.papertrans.cn/2/106/10592/10592-20.png