论文--中国科学院地理科学与资源研究所

论文

论文题目：	Rising temperature threatens China's cropland
第一作者：	Wang Jianghao, Zhang Junjie, Zhang Peng
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发表年度：	2022
摘　　要：	The rising demand for calories and protein together with urbanization, pose significant challenges to China's food security. The determination of policy actions requires accurate estimates of climatic impacts on both crop yields (intensive margin) and cropland area (extensive margin). However, the analysis of the latter has been limited, especially in developing countries. Here, we assess the impact of temperature on land use in China by matching high-resolution satellite data on land use with daily weather data from 1980 to 2010. We find that extremely hot weather (daily average temperature above 30 degrees C) has a long-lasting effect on reducing cropland in China. Combining climate projections from 39 downscaled climate models, we predict that climate change is likely to reduce China's cropland area by 2.09%-25.51% under IPCC's slowest and fastest-warming scenarios by the end of this century. In addition, we find that non-irrigated land is more susceptible to rising temperatures in the short term; however, irrigated land is subject to a similar impact in the long term. This result suggests that the adaptive effect of irrigation could be limited under persistent rising in temperature.
英文摘要：
刊物名称：	ENVIRONMENTAL RESEARCH LETTERS
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论文类别：	SCI