Evolutionary Game and Simulation Analysis of Participating Subjects in Remediation of Heavy Metal Contaminated Cultivated Land under the Ladder Multiple Supervision Model

The heavy metal pollution of cultivated land in China is severe, requiring remediation. Introducing third-party governance subjects representing market resources inevitable to realize the specialization and socialization However, due public nature land, confusion about participating parties’ responsibilities difficulty coordinating interests restrict expected effect To this end, a three-party evolutionary game model among grassroots government, enterprises, supervisory enterprises constructed virtually simulated, taking into account influence random checks by higher-level government. We found that reward punishment mechanism frequency inspection amount deduction will strategy selection parties. Strengthening awareness responsibility optimizing incentive system, establishing regular spot-check improving cost non-compliance can effectively resolve conflicts interest participants. study results have practical significance for further enhancing remediation efficiency metal-contaminated land.