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Continued Hydrothermal and Radiative Pressure on Changed Cropland in China

Author

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  • Yiming Fu

    (Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Ministry of Education, Kaifeng 475004, China
    College of Environment and Planning, Henan University, Kaifeng 475004, China)

  • Yaoping Cui

    (Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Ministry of Education, Kaifeng 475004, China
    College of Environment and Planning, Henan University, Kaifeng 475004, China)

  • Yaochen Qin

    (Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Ministry of Education, Kaifeng 475004, China
    College of Environment and Planning, Henan University, Kaifeng 475004, China)

  • Nan Li

    (College of Environment and Planning, Henan University, Kaifeng 475004, China)

  • Liangyu Chen

    (College of Environment and Planning, Henan University, Kaifeng 475004, China)

  • Haoming Xia

    (Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Ministry of Education, Kaifeng 475004, China)

Abstract

Both cropland and climate change over time, but the potential effects of climate change on cropland is currently not well understood. Here, we combined temporally and spatially explicit dynamics of cropland with air temperature, precipitation, and solar radiation datasets. China’s cropland showed a clear northward-shifting trend from 1990 to 2015. The cropland decreased south of the break line at 38° N, whereas it increased from the break line to northern regions. Correspondingly, the temperature showed a significant warming trend in the early part of the study period, which slowed down in later years. During the whole study period, both precipitation and solar radiation decreased over time, showed no significant linear characteristics, and the annual fluctuations were very large. The cropland areas in China showed a displacement characteristic with the increasing temperature, precipitation, and radiation. Overall, the cropland was shifting towards the high-temperature, low-precipitation, and low-radiation areas. The cropland dynamics indicate that they are likely to face severe drought and radiation pressure. Our findings imply that more resources such as irrigation may be needed for cropland, which will undoubtedly aggravate the agricultural water use in most northern regions, and the potential impacts on food security will further emerge in the future.

Suggested Citation

  • Yiming Fu & Yaoping Cui & Yaochen Qin & Nan Li & Liangyu Chen & Haoming Xia, 2019. "Continued Hydrothermal and Radiative Pressure on Changed Cropland in China," Sustainability, MDPI, vol. 11(14), pages 1-14, July.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:14:p:3762-:d:247026
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    1. Xin Deng & Miao Zeng & Dingde Xu & Feng Wei & Yanbin Qi, 2019. "Household Health and Cropland Abandonment in Rural China: Theoretical Mechanism and Empirical Evidence," IJERPH, MDPI, vol. 16(19), pages 1-13, September.

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