实施飞机人工增雨对密云水库水质中Ag+影响研究

针对2004年6月--2005年7月汛期（5—9月）在密云水库上游汇水区开展以飞机播撒AgI催化剂为主的人工增雨试验，对水库与白河入口处2个采样点水质进行定期连续监测，分析了作业期间汇水区降水量增加对水库水质Ag^＋及化学组分的影响，发现水库水体所测组分浓度值作业期小于非作业期；Ag^＋有明显的月变化，即作业期为低值区，非作业期为高值区。得出人工增雨后，降水量的增加未影响到水库中Ag^＋离子浓度的增加。

Effect of Aircraft Precipitation Enhancement on Ag+ Concentration in Miyun Reservoir

The AgI seeding experiments using seeding aircraft were carried out to enhance precipitation at the upriver catchments of the Miyun reservoir from June 2004 to July 2005. According to the regular and continuous measurements at two sampling spots located at the entrance of the Bai River and the reservoir, the effects of seeding precipitation on Ag+ and other chemical compositions of the water in the Miyun reservoir are studied. It is shown that the constituent concentrations of the water in the reservoir during the seeding period are lower than those during non-seeding period. There is obvious monthly change of the Ag+ concentration. It shows that the minimum occurred during seeding period and the maximum during non-seeding period. The results suggest that the enhancing precipitation by seeding does not effect the Ag+ concentration in the Miyun reservoir.