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中文摘要：
利用东北三省、内蒙古东部、山西、河北、北京、天津103个站点1960-2010年逐日平均气温资料,运用距平分析法、Mann-Kendall突变检验法等数学方法,分析了该区1960-2010年期间,暖温带和中温带分界线的变化特征。结果表明：1）1960-2010年间,暖温带北界一直呈波动状态;2）20世纪90年代以后,日均温稳定通过10℃,年积温≥3400℃的温度线发生了很大程度的北移,积温突变发生在1990年左右并于1994年左右到显著水平;3）近十年温度带的变化呈现明显的南北波动,温度变化幅度大,并在辽宁东南部表现最为明显。这种热量资源的增加给研究区域内的农业生产带来复杂的影响,如：农业结构调整、农业用水等方面。文中的研究目的在于为积温区划、指导农业生产和农业结构调整提供科学决策依据。
英文摘要：
Relying on the average temperature date of easten part of Inner Mongolia, Hebei Province, Shanxi Province, Beijing,Tianjin and three provinces in Northeast China from 1961 to 2010, through anomaly analysis, Mann - Kendall mutation test method, etc, we analyzed the variation characteristics of the demarcation line between warm temperate zone and moderate temperate zone. The results showed ： 1 ） The north bound of warm temperate zone was waving during 1960 to 2010 ;2）The daily mean temperature was greater than or equal to 10℃, the annual accumulated temperature which was greater than or equal to 3400℃ had a large move to north after 90 times. The break occured nearby 1990, reaching to the significant level at 1994;3）In the last 10 years, the change performanced an fluctuation in the north and south, the variation was large, and the most obvious phenomenon was showed in the southeast of Liaoning. The increase of heat resource had brought very complicated impact on regional agricultural production, such as the aspects of agricultural restructuring , agricultural water. The purpose of this paper is to provide scientific basis for decision - making on temperature regionalization, guide agricultural production and agricultural structural adjustment.
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