Figure 2 (IMAGE) Science China Press Caption The spatial pattern of ISA in (a) 1972 and (b) 2019. Each pixel indicates the impervious area within the 0.3 ° × 0.3 ° spatial extent. Credit ©Science China Press Usage Restrictions Use with credit. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.