The spatial distribution ofwater resource shortage in China is summed up from the p ractical condition and sustaining devel2 opment angles. The actuality and trend ofwater resource are reviewed, the characteristic ofwater cycle and water resource utilization in arid region ofNorthwest China are analyzed. And research advances on water cycle and effective utilization ofwater resource in arid re2 gion are summarized, the scientific countermeasures about effective utilization of water resource in arid region are p reliminarily dis2 cussed. Finally, some important scientific issues aboutwater cycle and effective utilization ofwater resource in arid region ofNorthwest China are put forward.
Based on the theory of isentropic potential vorticity(IPV)，a diagnostic analysis of a continuous rain process in the east of Northwest China in the second ten—day of May in 2005 WaS carried out．The results show that the large circulation background which influenced this continuous rain process was the h Jigh ridge near the Ural Mountain and the continually deepening trough near the Balkhash Lake；this continuous rain process Was caused by the low vortex continually created from the plateau together with the cold air split from the north．Because of the topographic effect of the Tibetan Plateau，the hi sh potential vorticity O11 the isentropic surface was transported to the lower reaches along the north side of the plateau；the high value area of IPV Was closely associated with the precipita·tion area。and the positive value area of IPV Can reflect the movement of the cold air，thus it Call be a significant predictor．
Some researches on the creeping environmental problems in recent years in International Center for Creeping Environmental Problems of Lanzhou were reviewed，including definition，significance，Cases and countermeasures on creeping environment，and rela-tionships among human activities，global warming and creeping environment．
Based on the theory of isentropic potential vorticity(IPV)，a diagnostic analysis of a continuous rain process in the east of Northwest China in the second ten—day of May in 2005 WaS carried out．The results show that the large circulation background which influenced this continuous rain process was the h Jigh ridge near the Ural Mountain and the continually deepening trough near the Balkhash Lake；this continuous rain process Was caused by the low vortex continually created from the plateau together with the cold air split from the north．Because of the topographic effect of the Tibetan Plateau，the hi sh potential vorticity O11 the isentropic surface was transported to the lower reaches along the north side of the plateau；the high value area of IPV Was closely associated with the precipitation area。and the positive value area of IPV Can reflect the movement of the cold air，thus it Call be a significant predictor．
It was reviewed that water problems including water resource,water need,water use,water carrying capacity,water pollution,water manageability,water policy and water cognizance in Northwest China.And the orderly human activity was discussed
The fact of global warming and the effects on ecological environment，society and economy in Gansu province in the background of global warming are analyzed with the interrelated materials in this paper. The countermeasures against climate change andsustainable development are shown too.And those，to Gansu province，can be summed up as two primary problems.First is water problem.Water problem is primarily to utilize reasonably，manage efficiently，save water，exploit and utilize water resources by precipitation enhancement over the Mountain Qilian. Second is sand problem.The problem is crucially to hold back the process of desertification.As this paper’sview，this holding back can be realized by the optimum project for recovering vegetation which would be abstract edby quantitatively calculating the categories distribution，run and carrying capacity of local forest and grassp lanted by using Regional Climate-Ecology Mode according to ecological environment sincluding terrain，physiognomy，climatehydrology，soil and so on.
Under the background of the global warming，the plant disease，insects，weeds and rats，as a new Creeping Environmental Problems（CEP）phenomenon，was pointed out in this paper.It is suffering potential impacts from atmospheric change day by day. That is to say，the area of geographical distribution of plant pest（disease，insects，weedsandrats）is extending，the line of overwinter is migrating toward north，the time of devolopment shorten，the propagation per year is increasing，the ration of population in creasing will speed up，the time of pest occurring earlier，the disaster is heavier than before，virus disease will increase，new plant disease，insects，weeds and rats will appear and soon
In this paper，some facts of creeping environment problems in Hexi region of Gansu province were given，it was pointed out that environment deterioration and climate abnormity aroused by humanactivities could impact on the persistent development of society and economy，people should think much of this problem.
The annual precipitation variable characteristics andproduction structure were analyzed using a hundred years annual data of precipitation in the main bo勿of arid and semi一arid area ,in Central Asia and northwest of China The results indicated that the patial distribution and time evolution of annual precipitation in this area not only show unitary features .but also unique feature. In addition .a successful readjusted example of production structure was raised based on the analysis of rainfall characteristics in this area.
