中国东北玉米空间分布对气候变化的响应,1980–2010（英文）

编号 zgly0001584307

文献类型 期刊论文

文献题名 中国东北玉米空间分布对气候变化的响应,1980–2010（英文）

作者 李正国  谭杰扬  唐鹏钦  陈浩  张莉  刘晗  吴文斌  唐华俊  杨鹏  刘珍环 

作者单位 ChineseAcademyofAgriculturalSciences  KeyLaboratoryofAgri-informatics  MinistryofAgriculture/InstituteofAgriculturalResourcesandRegionalPlanning  HunanAcademyofAgriculturalSciences  InstituteofAgriculturalEconomicsandRegionalPlanning 

母体文献 Journal of Geographical Sciences 

年卷期 2016年01期

年份 2016 

分类号 S162.53  S513 

关键词 climatewarming  regionalresponse  spatialpattern  Zeamays  China 

文摘内容 Based on county-level crop statistics and other ancillary information,spatial distribution of maize in the major maize-growing areas(latitudes 39°–48°N) was modelled for the period 1980–2010 by using a cross-entropy-based spatial allocation model.Maize extended as far north as the northern part of the Lesser Khingan Mountains during the period,and the area sown to maize increased by about 5 million ha.More than half of the increase occurred before 2000,and more than 80% of it in the climate transitional zone,where the annual accumulated temperature(AAT) was 2800–3400 °C·d.Regions with AAT of 3800–4000 °C·d became more important,accounting for more than 25% of the increase after 2000.The expansion of maize was thus closely related to warming,although some variation in the distribution was noticed across zones in relation to the warming,indicating that maize in northeast China may have adapted successfully to the warming by adjusting its spatial distribution to match the changed climate.