| 气候变化背景下1981-2010年中国玉米物候变化时空分异（英文） |
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| 引用本文： | 刘玉洁,秦雅,葛全胜.气候变化背景下1981-2010年中国玉米物候变化时空分异（英文）[J].地理学报(英文版),2019(3):351-362. |
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| 作者姓名： | 刘玉洁 秦雅 葛全胜 |
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| 作者单位： | Key Laboratory of Land Surface Pattern and Simulation;University of Chinese Academy of Sciences;College of Surveying and Mapping Science and Technology |
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| 基金项目： | National Natural Science Foundation of China,No.41671037;Youth Innovation Promotion Association of CAS,No.2016049;Key Research Program of Frontier Sciences,CAS,No.QYZDB-SSW-DQC005;Program for "Kezhen" Excellent Talents in IGSNRR,CAS,No.2017RC101 |
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| 摘 要： | 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.
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| 关 键 词： | maize PHENOLOGY climate change SPATIO-TEMPORAL differentiation China |
Spatiotemporal differentiation of changes in maize phenology in China from 1981 to 2010 |
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| LIU Yujie,QIN Ya,GE Quansheng.Spatiotemporal differentiation of changes in maize phenology in China from 1981 to 2010[J].Journal of Geographical Sciences,2019(3):351-362. |
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| Authors: | LIU Yujie QIN Ya GE Quansheng |
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| Abstract: | 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. |
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| Keywords: | maize phenology climate change spatio-temporal differentiation China |
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