五年滑动汛期降水频率距平值 (IMAGE) Science China Press Caption 图(a)中,上方的条形图表示大湿润期,下方的条形图表示大干旱期;深橙色代表小洪涝期,浅橙色代表小干旱期。每个子图中的百分比代表每个时期负频率距平所占比例 Credit ©《中国科学》杂志社 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.