气候变化背景下1981-2010年中国玉米物候变化时空分异（英文）

编号 zgly0001660582

文献类型 期刊论文

文献题名 气候变化背景下1981-2010年中国玉米物候变化时空分异（英文）

作者 刘玉洁  秦雅  葛全胜 

作者单位 KeyLaboratoryofLandSurfacePatternandSimulation  InstituteofGeographicSciencesandNaturalResourcesResearch  CAS  UniversityofChineseAcademyofSciences  CollegeofSurveyingandMappingScienceandTechnology  Xi’anUniversityofSciencean 

母体文献 Journal of Geographical Sciences 

年卷期 2019年03期

年份 2019 

分类号 S513 

关键词 maize  phenology  climatechange  spatio-temporaldifferentiation  China 

文摘内容 Spatio-temporal changes in the differentiation characteristics of eight consecutive phenological periods and their corresponding lengths were quantitatively analyzed based on long-term phenological observation data from 114 agro-meteorological stations in four maize growing zones in China. Results showed that average air temperature and growing degree-days (GDD) during maize growing seasons showed an increasing trend from 1981 to 2010, while precipitation and sunshine duration showed a decreasing trend. Maize phenology has significantly changed under climate change: spring maize phenology was mainly advanced, especially in northwest and southwest maize zones, while summer and spring-summer maize phenology was delayed. The delay trend observed for summer maize in the northwest maize zone was more pronounced than in the Huang-Huai spring-summer maize zone. Variations in maize phenology changed the corresponding growth stages length: the vegetative growth period (days from sowing date to tasseling date) was generally shortened in spring, summer, and spring-summer maize, although to different degrees, while the reproductive growth period (days from tasseling date to mature date) showed an extension trend. The entire growth period(days from sowing date to mature date) of spring maize was extended, but the entire growth periods of summer and spring-summer maize were shortened.