农学学报2012，Vol.2Issue(3)：25-30,6.
石羊河流域1970—2009年气候变化对农业生产结构的影响
Effects of Nearly 40 Years Climate Change of Shiyang River Basin on Agricultural Production Structure
摘要
Abstract
In order to improve people to understand on the favorable and unfavourable relationships between climate warming and agricultural production,grasp main meteorological factors on food production,timely adjust agricultural planting structure,draw on advantages and avoid disadvantages,and to hit the target of high and stable grain output,the meteorological information of five meteorology stations in Shiyang River Basin in Gansu from 1970 to 2009 were involved and analyzed.The related meteorological data were divided into 2 stages,i.e.,1970-1989 for the 1st stage,and 1990-2009 for the 2nd stage.Average temperature,precipitation,accumulated temperature,frost-free period and other relevant data in year,month,spring（March to May）,summer（June to August）,autumn（September to November） and winter（November to February） were subjected to statistical analysis,and compared between the 1st and the 2nd 20 years.The average temperature was increased by 1.0℃ in the 2nd 20 years,as compared to the 1st 20 years.The temperature increase scope was ranked as spring wintersummer and autumn.The average precipitation was increased by 5.7 mm in the 2nd 20 years.The precipitation was decreased by 7.1 mm in June and increased by 4.4 mm in July averagely.The space-time location of the precipitation was not well balanced.In addition,there was a significant increase in the effective accumulated temperature and the frost-free period in the 2nd 20 years,agricultural planting关键词
气候变化/农业生产/对策建议Key words
Climate Change/Agricultural Production/Countermeasures and Suggestions分类
农业科技引用本文复制引用
李万希,陈雷,王润元,马兴祥,丁文魁..石羊河流域1970—2009年气候变化对农业生产结构的影响[J].农学学报,2012,2(3):25-30,6.基金项目
国家科技部气象行业专项“农田水分利用效率对气候变化的响应与适应技术” （）
