1981-2009河南玉米物候对气候变化的响应和敏感度分析（英文）

编号 zgly0001584152

文献类型 期刊论文

文献题名 1981-2009河南玉米物候对气候变化的响应和敏感度分析（英文）

作者 刘玉洁  秦雅  葛全胜  戴君虎  陈巧敏 

作者单位 KeyLaboratoryofLandSurfacePatternandSimulation  InstituteofGeographicSciencesandNaturalResourcesResearch  CAS  Xi’anUniversityofScienceandTechnology  CollegeofSurveyingandMappingScienceandTechnology  UniversityofChineseAcademy 

母体文献 Journal of Geographical Sciences 

年卷期 2017年09期

年份 2017 

分类号 S162.53  S513 

关键词 climatechange  maize  phenology  trendanalysis  sensitivity 

文摘内容 With 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.