Weakened maize phenological response to climate warming in China over 1981‒2018 due to cultivar shifts

作     者：Yu-Chuan LUO Zhao ZHANG Liang-Liang ZHANG Jing ZHANG Fu-Lu TAO 

作者机构：Academy of Disaster Reduction and Emergency Management Ministry of Emergency Management&Ministry of EducationSchool of National Safety and Emergency ManagementBeijing Normal UniversityBeijing 100875China Key Laboratory of Land Surface Pattern and SimulationInstitute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101 China College of Resources and EnvironmentUniversity of Chinese Academy of SciencesBeijing 100049 China Natural Resources Institute Finland(Luke)Helsinki 00790Finland 

出 版 物：《Advances in Climate Change Research》 (气候变化研究进展（英文版）)

年 卷 期：2022年第13卷第5期

页      面：710-720页

核心收录：

学科分类：090101[农学-作物栽培学与耕作学] 09[农学] 0901[农学-作物学] 

基　　金：supported by the National Natural Science Foundation of China(42061144003 41977405) 

主　　题：Maize Climate change Phenology Adaptation Cultivars shift 

摘      要：Assessing climate change impacts on crop phenology is essential for developing adaptation *** better understand crop response and adaptation to climate change,there is an urgent need to investigate whether the impacts weakens and how crops responds to recent climate warming,as well as the roles of different drivers in crop phenology ***,we analyzed the spatiotemporal changes in maize phenology and the underlying mechanisms over 1981–2018 using up-to-date 6106 phenological observations at 327 agro-meteorological stations in *** found that during 1981–2018 maize sowing and maturity dates were generally delayed by 0.6 and 1.2 d per decade,respectively,whereas heading date was advanced by 0.9 d per *** phenology was most negatively correlated with rising minimum temperature(night-time warming),followed by maximum(daytime)temperature,and least by mean *** trends in maize phenology and the correlation between growth periods and temperature generally declined from 1981 to 1999 to 2000–2018 for both spring and summer maize,although climate warming during growth period did not slow *** phenological response to temperature weakened mainly owing to agricultural managements,especially cultivar *** change shortened growth period by 3.4 and 1.7 d per decade but cultivar shifts prolonged it by 4.5 and 2.1 d per decade for spring and summer maize,*** study highlights that maize phenology is more sensitive to night-time warming than daytime warming,and cultivar shifts far outweigh climate *** findings foster the understanding of spatiotemporal dynamics of maize phenology and its drivers,which can benefit to develop effective climate change adaptation options for different regions.