华北农牧交错带气候生产力时空变化特征——以大同市为例

以华北农牧交错带为切入点,选取晋北长城沿线大同市8个气象站点,利用线性趋势分析、5年滑动、M-K检验以及Thormthwaite模型,分析了近38年来大同市气候变化及其气候生产力的演变特征.结果表明:①近38年大同市气温呈现显著增加趋势,且在1994年发生突变.②降水量呈现不显著的减少趋势.③气候生产力呈现缓慢增加趋势,出现南部高于北部,东西方向上呈现由中心向四周递增.④暖湿气候的气候生产力呈现正距平,最适合作物生长；冷干气候的气候生产力呈现负距平,最不适合作物生长.现阶段气候暖干化趋势显著,因此研究气候变化对气候生产力有重要意义.

Spatial and Temporal Variations of Climate Productivity in the Area of Pastoral Transition of Datong City

This paper selected the pastoral transition zone of north as the point,choosing 8 meteorological stations along the Great Wall in Datong of the north of Shanxi,analyzed the mutation of climate and climate productivity in the recent 38 years of Datong,with linear trend analysis,5-year running average,M-K test and the Thornthwaite model.The results showed that the temperature increased significantly,and the mutation year was 1994,but the precipitation decreased significantly,the trend of climate productivity ...