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Impact of cropland displacement on the potential crop production in China: a multi-scale analysis

机译：农田流离失所对中国潜在作物生产的影响：多规模分析

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摘要

Changes in the amount and location of cropland areas may affect the potential crop production at different spatial scales. However, most studies ignore the impacts of cropland displacement on potential crop production. In many countries, cropland protection policies mainly aim for no loss in cropland area, while there is no restriction on change of cropland location. Taking China as the study area, we analyze the impacts of cropland displacement on potential crop production at four administrative levels during the period 2000 and 2018. At the national level, we find a net decrease in cropland area of 0.81 Mha, while another 19.63 Mha was displaced. The former led to a decrease of 4.20 Mton in potential crop production, while the latter resulted in a decrease of 43.26 Mton as a result of lower quality of the newly cultivated lands. In other words, cropland displacement explains 91% of the total loss in potential crop production at the national scale. However, the contribution of cropland displacement to total change in potential crop production is increasingly smaller at provincial level, municipal level, and county levels. These findings highlight the importance of geographic location on crop production and suggest that cropland policies should consider geographic location in addition to cropland area.
机译：农田地区的数量和地点的变化可能会影响不同空间尺度的潜在作物生产。然而，大多数研究忽略了农田位移对潜在作物生产的影响。在许多国家，农田保护政策主要旨在在农田地区的损失，而没有限制农业地区的变化。以中国为学习领域，我们分析了农田位移在2000年和2018年期间的四个行政水平对潜在作物产量的影响。在国家一级，我们发现农田面积净减少为0.81 MHA，而另外19.63米流离失所。前者导致潜在作物生产中的4.20米尔，而后者导致了43.26曼顿，由于新栽培的土地的质量较低。换句话说，农田位移在全国范围内解释了潜在作物产量总损失的91％。然而，省级，市政层面和县级潜在作物产量总变化对潜在作物产量总变化的贡献越来越小。这些调查结果突出了地理位置对作物生产的重要性，并提出除了农田地区之外还应考虑地理位置。

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  • 来源
    《Regional Environmental Change》 |2020年第3期|97.1-97.13|共13页
  • 作者

    Yang Bohan; Ke Xinli; van Vliet Jasper; Yu Qiangyi; Zhou Ting; Verburg Peter H.;

  • 作者单位

    Cent China Normal Univ Coll Publ Adm Wuhan 430079 Peoples R China|Vrije Univ Amsterdam Inst Environm Studies IVM De Boelelaan 1087 NL-1081 HV Amsterdam Netherlands;

    Huazhong Agr Univ Coll Publ Adm Wuhan 430079 Peoples R China;

    Vrije Univ Amsterdam Inst Environm Studies IVM De Boelelaan 1087 NL-1081 HV Amsterdam Netherlands;

    Chinese Acad Agr Sci Key Lab Agr Remote Sensing AGRIRS Minist Agr Inst Agr Resources & Reg Planning Beijing 100081 Peoples R China;

    Huazhong Agr Univ Coll Publ Adm Wuhan 430079 Peoples R China|Vrije Univ Amsterdam Dept Spatial Econ De Boelelaan 1105 NL-1081 HV Amsterdam Netherlands;

    Vrije Univ Amsterdam Inst Environm Studies IVM De Boelelaan 1087 NL-1081 HV Amsterdam Netherlands|Swiss Fed Inst Forest Snow & Landscape WSL Birmensdorf Switzerland;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Land use change; Cropland displacement; Potential crop production; Land use policy; Food security;

    机译：土地利用变化;耕地位移;潜在的作物生产;土地使用政策;粮食安全;

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