Extreme precipitationindex tend to decrease marked in Beijing area, but increase marked in Sichuan-Basin and Leizhou-Peninsula.
极端降水指数在北京地区减少非常显著，在四川盆地和雷州半岛则有较明显的增长。
2
On this basis, precipitation concentration period, concentration degree and the flood index in Xinjiang River basin were determined.
在此基础上确定了流域雨量集中期、集中度及信江流域洪涝指数。
3
If the relative variability of cumulative vegetation index and cumulative precipitation during the winter wheat growth cycle is adopted, the correlation coefficient between both is raised.