QIN Junling,Lv Wujie,WANG Xiangyu,et al.Spatio-Temporal Variation of Agro-Climatic Resources in Cangzhou in Recent 50 Years[J].HEILONGJIANG AGRICULTURAL SCIENCES,2023,(09):45-50.[doi:10.11942/j.issn1002-2767.2023.09.0045]
近50年沧州市农业气候资源时空变化特征
- Title:
- Spatio-Temporal Variation of Agro-Climatic Resources in Cangzhou in Recent 50 Years
- 文章编号:
- 8
- Keywords:
- agrao-climate resources; spatio-temporal characteristics; abrupt change; periodicity; trend prediction
- 文献标志码:
- A
- 摘要:
- 在全球气候变化大背景下,为提高沧州市农业生产的气候应对能力。利用1973-2022年沧州市14站气象观测资料,采用气候倾向率、MK趋势和突变检验、Morlet小波分析、Hurst指数方法,对沧州市平均气温、日照时数、降水量的变化特征和趋势预测进行了分析。结果表明,近50 a来,沧州市平均气温全区呈显著增温趋势,日照时数全区呈减少趋势,降水量中西部县市呈减少趋势,其他县市呈增多趋势。在空间上,平均气温差异不大,日照时数呈中部多周边少,降水量明显呈东多西少特征;前两者气候倾向率空间特征不明显,降水量呈由西向东增大的特征。沧州市平均气温、日照时数、中西部县市外的其他县市降水量分别在1997年、1988年和2010年代发生了变暖、变少、增多的突变现象。平均气温、日照时数、降水量分别在14,27和23 a时间尺度上明显存在一个9 a、16~17 a、15~16 a的第一主周期。推测未来沧州市平均气温将会在大幅波动中持续增暖,日照时数将会在大幅波动中持续减少,降水量中西部县市将会在大幅波动中持续减少,其他县市将会在大幅波动中持续增多。
- Abstract:
- In order to improve the climate resilience of Cangzhou′s agricultural production in the context of global climate change. Based on the meteorological observation data of 14 stations in Cangzhou from 1973 to 2022, climatological tendency rate, MK trend and mutation test, Morlet wavelet analysis and Hurst index method were used, the variation characteristics and trend prediction of mean temperature, sunshine hours and precipitation in Cangzhou were analyzed. The results showed that in the past 50 years, the average temperature in the whole region of Cangzhou had a significant warming trend, the sunshine hours in the whole region had a decreasing trend, the precipitation in the central and western counties and cities had a decreasing trend, and the other counties and cities had an increasing trend. In space, the difference of mean temperature was not significant, the sunshine hours were more in the middle and less in the periphery, and the precipitation was more in the east and less in the west. In 1997,1988 and the 2010s, Cangzhou experienced abrupt changes in average temperature, sunshine hours and precipitation in other counties and cities in the central and western regions. On the time scales of 14,27,23 years, the mean temperature, sunshine duration and precipitation had a first main period of 9,16-17 and 15-16 years, respectively. It is predicted that in the future, the average temperature in Cangzhou will continue to increase in large fluctuations, the sunshine hours will continue to decrease in large fluctuations, and the precipitation in the central and western counties and cities will continue to decrease in large fluctuations, other counties and cities will continue to grow in large fluctuations.
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备注/Memo
收稿日期:2023-06-10