Evaluation of soil erosion in the Changhua River Basin on Hainan Island based on the Chinese soil loss equation model.

5 indicate that, from 2020 to 2022, the total erosion area (mild to severe) of the Changhua River Basin showed a decreasing trend year by year (compared with 2020–2021, the decrease in 2021–2022 was greater), decreasing from 1824.20 km 2 to 1270.95 km 2 for a total decrease of 553.25 km 2 , with a rate of change of −30.33 %.

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