Impact of growing season temperature on wheat productivity in China
文献类型: 外文期刊
第一作者: You, Liangzhi
作者: You, Liangzhi;Rosegrant, Mark W.;Wood, Stanley;Sun, Dongsheng
作者机构:
关键词: Global warming;Wheat yield;Production function;Marginal impact;Panel data;China
期刊名称:AGRICULTURAL AND FOREST METEOROLOGY ( 影响因子:5.734; 五年影响因子:5.964 )
ISSN:
年卷期:
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收录情况: SCI
摘要: Climate change continues to have major impact on crop productivity all over the world. Many researchers have evaluated the possible impact of global warming on crop yields using mainly indirect crop simulation models. Here we use a 1979–2000 Chinesecrop-specific panel dataset to investigate the climate impact on Chinese wheat yield growth. We find that a 1 °C increase in wheat growing season temperature reduces wheat yields by about 3–10%. This negative impact is less severe than those reported in other regions. Rising temperature over the past two decades accounts for a 4.5% decline in wheat yields in China while the majority of the wheat yield growth, 64%, comes from increased use of physical inputs. We emphasize the necessity of including such major influencing factors as physical inputs into the crop yield-climate function in order to have an accurate estimation of climate impact on crop yields.
分类号: S1
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