首页|Spatial distribution of maize in response to climate change in northeast China during 1980-2010
Spatial distribution of maize in response to climate change in northeast China during 1980-2010
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NETL
NSTL
万方数据
维普
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℃·d.Regions with AAT of 3800-4000 ℃·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.
LI Zhengguo、TAN Jieyang、TANG Pengqin、CHEN Hao、ZHANG Li、LIU Han、WU Wenbin
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Chinese Academy of Agricultural Sciences,Key Laboratory of Agri-informatics,Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning,Beijing 100081,China
Hunan Academy of Agricultural Sciences,Institute of Agricultural Economics and Regional Planning,Changsha 410125,China
National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China
NETL
NSTL
万方数据
维普
