I'm confused about this part: "the capitalist system that leads to environmental destruction". Are you aware of the Aral Sea environmental disaster?
To quote Wiki: <<Formerly the fourth largest lake in the world with an area of 68,000 km2 (26,300 sq mi), the Aral Sea began shrinking in the 1960s after the rivers that fed it were diverted by Soviet irrigation projects.>>
As I understand, most of the diverted water was used to grow cotton.
That harm was done during the Soviet Union. Most would agree, the Soviet system was less capitalistic than the current Mainland Chinese system.
All types of governments can cause environmental ruin, and all types of governments can clean it up. Also, not all environmental ruin is permanent. The United States, UK, and Japan had extensive, wide-spread industrial pollution in the 1960s and 1970s. They spent the next 30 years cleaning up, and did a pretty good job.