Liu Yujie; Qin Ya; Ge Quansheng; Dai Junhu; Chen Qiaomin
Source Publicationjournalofgeographicalsciences
AbstractWith the global warming, crop phenological shifts in responses to climate change have become a hot research topic. Based on the long-term observed agro-meteorological phenological data (1981-2009) and meteorological data, we quantitatively analyzed temporal and spatial shifts in maize phenology and their sensitivities to key climate factors change using climate tendency rate and sensitivity analysis methods. Results indicated that the sowing date was significantly delayed and the delay tendency rate was 9.0 d·10a~(-1). But the stages from emergence to maturity occurred earlier (0.1 d·10a~(-1)<θ<1.7 d·10a~(-1), θ is the change slope of maize phenology). The length of vegetative period (VPL) (from emergence to tasseling) was shortened by 0.9 d·10a~(-1), while the length of generative period (GPL) (from tasseling to maturity) was lengthened by 1.7 d·10a~(-1). The growing season length (GSL) (from emergence to maturity) was lengthened by 0.4 d·10a~(-1). Correlation analysis indicated that maize phenology was significantly correlated with average temperature, precipitation, sunshine duration and growing degree days (GDD) (p<0.01). Average temperature had significant negative correlation relationship, while precipitation, sunshine duration and growing degree days had significant positive correlations with maize phenology. Sensitivity analysis indicated that maize phenology showed different responses to variations in key climate factors, especially at different sites. The conclusions of this research could provide scientific supports for agricultural adaptation to climate change to address the global food security issue.
Document Type期刊论文
First Author Affilication中国科学院地理科学与资源研究所
Recommended Citation
GB/T 7714
Liu Yujie,Qin Ya,Ge Quansheng,et al. reponsesandsensitivitiesofmaizephenologytoclimatechangefrom1981to2009inhenanprovincechina[J]. journalofgeographicalsciences,2017,27(9):1072.
APA Liu Yujie,Qin Ya,Ge Quansheng,Dai Junhu,&Chen Qiaomin.(2017).reponsesandsensitivitiesofmaizephenologytoclimatechangefrom1981to2009inhenanprovincechina.journalofgeographicalsciences,27(9),1072.
MLA Liu Yujie,et al."reponsesandsensitivitiesofmaizephenologytoclimatechangefrom1981to2009inhenanprovincechina".journalofgeographicalsciences 27.9(2017):1072.
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