[Objective] The aim was to evaluate the vulnerability to pollution of shallow groundwater in Ordos Cretaceous Basin system.[Method] Mathematical modeling,GIS sp
[Objective]The research aimed to analyze formation reason of " 0902" blizzard in northeast China. [Method]By using timely observation data,NCEP reanalysis data
[Objective]The research aimed to analyze temporal-spatial variation characteristics of the extreme precipitation days over South China from 1961 to 2010.[Method