The new generation weather radar echoes data of the strong rainstorm weather occurred on July 8, 2006 in Qingyang citywas analyzed. Results show that upper shearline resulted in thisweather event, and the difference in intensity, velocity echoes and physical quantity p roduction between the rainstorm and hailweather was not so obvious, but the damage was more severe. So for weather forcast, weather events like this should be focused, and the same way as hail supp ression shoud be adop ted to reduce p recip itation intensity and decrease damages.

The geographic character and climatic condition，the sort and spatial - temporal distribution of geological calamity in Qingyang city of Gansu province were analyzed in this paper，and the relation between geological calamity and precipitation there was discussed，and based on that，the meteorological monitoring and forecasting model was established by using discriminance and experience analysis method. Results show that the precipitation is the main reason resulting in geological calamity there，particularly the strong convective rainfall and continued rain events，July and August are the geological calamity high occurring period，and accurate weather forecast combined with the local geological condition will play an important role in geological calamity forecast

Based on the analysis of Xifeng new generation weather radar echo data of regional hail weather on 30 May 2005 in Qingyang city，the hail cloud characteristics in new generation weather radar intensity echo，velocity echo and physical quantity products were given out. Results show that the shearline at the bottom of the low votex resulted in this hail weather，and it was not the zonal hail cloud moving to Qingyang city but the supercell hail cloud forming over the city in the moving course of the squall line that caused this strong hail event.

Water resource is very lack in Qingyang city which is located to resources very difficult to exploit，sustainable development.a saresult   total thercs a great short the central region of Loess Plateau, and existing waof available water resource，and it prevents society economy from water resource and
this paper, and some problems in utilization of water resource were  its utilization status in Qingyang city were surveyed in analyzed combining the local economy and geographical characteristic, and the basic countermeasures of sustainable utilization in water resource were brought forward too.

 Based on acid rain monitoring data of 11 years in Xifeng climatologicaL station, and main pollutant source data samples in north  of  Qingyang  city,  according to  acid  rain  monitoring  standard  made  by  China  Meteorological  Administration,  acid  rain ChaTaCteTlSt1CS  WPTe  analyzed  StatlStlCally.  ReSLI1tS  S110W  that  aCld  Taln  degree  Weakened  Wlth  f1LICtllatlOn  dLITlng  1992 -2000  In Qlngyang Clty and hOOSted Llp dLITlng 2001-2002  WlthOllt COriSldeTlng 1T1f1LIenCe Of  Wlnd adVPCtlOn, the fTeqLIenCy OCCLITTlng aCld Taln In a year deehned  yearly,  the  monthly  aC1d  Ta1n  degTPe  1S  maXlmlnn  1n  MaTCh  and  t}OVPlnher,  PH V 0.4c},  the  freC(Lleney  OCCLITrlng  aCld Taln 1S maXlmlnn Of 24%-3Jr}10 from ALIgLISt t0  t}OVPlnher.  COriSldeTlng the  1T1f1LIenCe Of  Wlnd adVPCtlOn In OT hefOTe  Taln,  the 1T1f1LIenCe of pollutant source in the north on yearly acid rain intensity isn't obvious, but it can  make the frequency occurring acid rain increase m a year mainly in the influence on acid rain degree is marked in October, PH reduced 0.3, the influence on monthly acid rain summer. The study revealed the fact that acid rain exists over
Longdong loess plateau, it has an active meaning occurrmg 1S to cure acid rain harm and to protect ecology environment.