Abstract: Based on the meteorological data of the eleven stations in 1961-2006 in the East Guanzhong Areas of Shaanxi Province,the climatic resource distribution and its change characteristics for the protected agriculture were analyzed by using the climatic trends rate methods.The result showed that the temperature during the protected agriculture production season in the East Guanzhong Areas of Shaanxi Province,namely from the November to the March next year,increased from the Northwest to the Southeast.Generally,the heat resource had an increasing trend.The most abundant precipitation areas were in Huaxian and Tongguan counties,while the least precipitation areas were in Chengcheng,Heyang,Dali and Pucheng counties.The precipitation had a decreased trend.The most abundant sunshine areas were in Chengcheng county,while it was relative less in Huaxian.The sunshine increased in the South of the East Guanzhong Areas,while it decreased in the North of the East Guanzhong Areas.For Chengcheng and Heyang counties in the North of the East Guanzhong Areas,with the abundant sunshine resource,there was great potential to develop the protected agriculture,where the key issues were the heat preservation,the frozen injury prevention and the irrigation safeguarding.

Key words: East Guanzhong Areas of Shaanxi Province, East Guanzhong Areas of Shaanxi Province, Protected agriculture, Climatic resource utilization, Distribution characteristics, Change trend