在两类El Nio事件下,通过滑动平均,对河西走廊地区降水量、气温及出山径流量与ElNio的相关性进行了研究,并用距平法分析了1959-2005年期间两类El Nio事件对研究区气温、降水量和出山径流量变化的具体影响。结果表明,整个河西地区受El Ni珘no较强影响,在第一类El Nio事件年,高温少雨、出山径流量偏少;第二类El Nio事件年该地区低温多雨、出山径流量较丰。相比高海拔山区,气温在低海拔地区对El Nio响应程度更高,降水对El Nio的响应在山区和低海拔平原区差别不大,均表现出较高的敏感性。与出山径流量相比,降水量和气温对El Nio的响应更高一些。 Under two types of El Nio events, the correlation between rainfall and temperature and the runoff from El Niño in Hexi Corridor region was studied by means of sliding averaging, Specific impact of El Nio event on temperature, precipitation and runoff change in the study area. The results show that the whole Hexi area is strongly influenced by El Ni 珘 no. In the first type of El Nio event, high temperature and less rainfall and less mountain runoff are less. In the second type of El Nio incident, Runoff is abundant. Compared with high altitude mountainous areas, the temperature response to El Nio is higher at lower altitude, and the response of precipitation to El Nio is not significantly different between mountainous area and low altitude plain area, showing high sensitivity. Compared with the runoff, the precipitation and temperature respond more to El Nio.