[1]CHE Xiaocui,LI Hongli,ZHANG Chunyan,et al.Impacts of Climate Change on Corn Yield in Jilin Province Since 1980s[J].Research of Soil and Water Conservation,2021,28(02):230-234+241.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 02
Page number:
230-234+241
Column:
Public date:
2021-02-06
- Title:
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Impacts of Climate Change on Corn Yield in Jilin Province Since 1980s
- Author(s):
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CHE Xiaocui, LI Hongli, ZHANG Chunyan, GUO Dan, SHEN Haiou
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(College of Resources and Environment, Jilin Agricultural University, Changchun 130118, China)
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- Keywords:
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climate change; corn yield; multiple linear regression; Jilin Province
- CLC:
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P467; S513
- DOI:
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- Abstract:
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In order to study the impact of climate change on corn yield in Jilin Province, based on the meteorological and agricultural data of Jilin Province from 1980 to 2017, we analyzed the characteristics of climate and corn yield changes in Jilin Province by using a variety of statistical methods, and established the correlation model between yield and climate factors by multiple linear regression method. The results showed that during the study period, the annual average temperature increased significantly, the annual average precipitation and sunshine hours decreased, but the trend was not significant; the actual yield and trend yield of corn showed an obvious upward trend, which showed that the technical progress and social and economic development had the significant effect on the increase of grain yield per unit area; the meteorological yield was quite different, indicating that climate factors had the impact on corn yield in Jilin Province; the change trend of relative yield was consistent with that of meteorological yield, with 9 climate rich years, 3 poor climate years, and the others were normal years; the meteorological yield was positively correlated with the annual average temperature, annual average precipitation and sunshine hours. According to the fitting regression model, the corn yield showed a downward trend in the next 10 years. The climate in Jilin Province is characterized by the pattern of the obvious increase of temperature, reduction of the precipitation and sunshine hours, which will restrict the increase of corn yield.