东北地区玉米气候生产潜力时空分布特征  

Spatial and Temporal Characteristics of Potential Climatic Productivity of Maize in Northeast China

作　　者：魏凤英[1] 冯蕾[1] 马玉平[1] 王石立[1] 

机构地区：[1]中国气象科学研究院,北京100081

出　　处：《气象科技》2010年第2期243-247,共5页Meteorological Science and Technology

基　　金："十一五"国家科技支撑项目(2006BAD04B01);社会公益研究专项(2005DIB4J107)资助

摘　　要：利用旋转经验正交函数和功率谱等方法分析了1961～2007年东北地区玉米光温生产潜力和气候生产潜力的时间变化趋势及区域特征。结果表明,东北地区玉米光温生产潜力呈显著的上升趋势;气候生产潜力呈下降趋势,但变化趋势不显著。玉米光温生产潜力和气候生产潜力均存在7～9年的显著周期变化。玉米气候生产潜力还存在5年和3年左右的显著周期;东北玉米光温生产潜力呈西南区域与东北区域相反的空间趋势分布,生产潜力的高值区位于辽宁大部、吉林西部和黑龙江西南部,低值区位于东北的东部地区;东北玉米气候生产潜力的高值区位于东北的东南部,低值区位于东北的西部。The methods such as Rotated Empirical Orthogonal Function（REOF） and Power Spectrum are used to analyze the typical spatial and temporal characteristics of potential photo-thermal productivity and potential climatic productivity of maize from 1961 to 2007 in Northeast China.The results indicate that the photo-thermal potential productivity shows a significant increasing trend in recent years,while the potential climatic productivity shows a decreasing trend.Both of the two types of productivity have distinct interannual change,and the main variation period is about 7 to 9 years.Besides that,the potential climate productivity of maize also has the periods of 3 and 5 years.The change of photo-thermal potential productivity of maize in the southwestern part is opposite to that in the northeastern part.Most parts of Liaoning Province,the western Jilin Province,and the southwestern Heilongjiang Province have high photo-thermal potential productivity,while in the eastern Northeast China the photo-thermal potential productivity is relatively low.The areas with high potential climate productivity of maize are in the southeastern Northeast China,and the areas with low productivity are in the western Northeast China.

关 键 词：东北地区 玉米 生产潜力 趋势变化 区域特征 

分 类 号：P425.55[天文地球—大气科学及气象学]