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Quantifying the spatiotemporal dynamics and multi-aspect performance of non-grain production during 2000-2015 at a fine scale

机译：精细量化2000-2015年非粮食生产的时空动态和多方面表现

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摘要

In recent years, large quantities of cultivated land in China have been converted to non-grain production. There is a growing need to understand the spatiotemporal dynamics and multi-aspect performance of non-grain production to aid further agricultural development and ensure grain security. Multi-temporal high-resolution aerial photographs were used to investigate the trends of four categories of non-grain production (pond farming, duck rearing, nursery plantation and vegetable production) in the Tongxiang region of China from 2000 to 2015. Spatial analysis was then utilized to identify spatial autocorrelation and hotspots for different non-grain production categories. Finally, environmental and economic indicators were applied to assess the performance of different non-grain production categories from the perspective of environmental impact, economic benefits and grain security and to link the performance to the differences in dynamics. The results showed that the non-grain production in Tongxiang increased by 2460.68 ha from 2000 to 2015. The non-grain expansion in different periods was closely related to the central and local policy orientation. Environmental and economic analyses revealed that nursery plantation and pond farming consistently dominated in Tongxiang due to their low investment requirements, low environmental pressure and relatively high economic profit. All non-grain production categories exhibited strong spatial autocorrelation in 2000-2015, as evidenced by spatial analysis. Conspicuous regional disparities were also observed in the hotspots of different non-grain production categories, in part due to local traditions and the clustering effect. Non-grain production activities generated more pressure on the local environment than rice plantation despite high economic benefits. Furthermore, the expanding nongrain production in rural China will lead to an overestimation of grain outlook and jeopardize national grain security in the long run. Eco-agricultural systems, such as integrated rice-duck farming systems, could increase the likelihood of an economic and ecological win-win situation between non-grain production and grain cultivation.
机译：近年来，中国大量耕地已转为非粮食生产。越来越需要了解非粮食生产的时空动态和多方面的表现，以帮助进一步的农业发展和确保粮食安全。利用多时相高分辨率航拍照片调查了中国桐乡地区2000年至2015年的四类非粮食生产趋势（池塘养殖，养鸭，苗圃种植和蔬菜生产）。然后进行了空间分析用于识别不同非粮食生产类别的空间自相关和热点。最后，使用环境和经济指标从环境影响，经济利益和粮食安全的角度评估不同非粮食生产类别的绩效，并将绩效与动态差异联系起来。结果表明，桐乡市非粮食生产从2000年到2015年增加了2460.68公顷。不同时期的非粮食扩张与中央和地方的政策取向密切相关。环境和经济分析表明，桐乡苗圃和池塘养殖由于投资要求低，环境压力小和相对较高的经济利润而始终占主导地位。空间分析表明，在2000-2015年间，所有非粮食生产类别均表现出较强的空间自相关性。在不同非粮食生产类别的热点地区也观察到明显的地区差异，部分原因是当地的传统和集群效应。尽管具有很高的经济效益，但非粮食生产活动对水稻生产造成的当地环境压力大于水稻种植。此外，从长远来看，中国农村地区非谷物产量的增长将导致对谷物前景的高估，并危及国家粮食安全。生态农业系统，例如稻鸭鸭一体化系统，可能增加非粮食生产与谷物种植之间经济和生态双赢的可能性。

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  • 来源
    《Ecological indicators》 |2019年第6期|410-419|共10页
  • 作者

    Su Yue; Li Chenlu; Wang Ke; Deng Jinsong; Shahtahmassebi Amir Reza; Zhang Leping; Ao Weijiu; Guan Tao; Pan Yi; Gan Muye;

  • 作者单位

    Zhejiang Univ, Coll Environm & Resource Sci, Inst Agr Remote Sensing & Informat Technol, Hangzhou 310058, Zhejiang, Peoples R China;

    Zhejiang Univ, Coll Environm & Resource Sci, Inst Agr Remote Sensing & Informat Technol, Hangzhou 310058, Zhejiang, Peoples R China;

    Zhejiang Univ, Coll Environm & Resource Sci, Inst Agr Remote Sensing & Informat Technol, Hangzhou 310058, Zhejiang, Peoples R China;

    Zhejiang Univ, Coll Environm & Resource Sci, Inst Agr Remote Sensing & Informat Technol, Hangzhou 310058, Zhejiang, Peoples R China;

    Zhejiang Univ, Coll Environm & Resource Sci, Inst Agr Remote Sensing & Informat Technol, Hangzhou 310058, Zhejiang, Peoples R China;

    Tongxiang Agr Econ Bur, Tongxiang 314500, Peoples R China;

    Zhejiang Land Surveying & Planning Inst, Hangzhou 310058, Zhejiang, Peoples R China;

    Zhejiang Land Surveying & Planning Inst, Hangzhou 310058, Zhejiang, Peoples R China;

    Zhejiang Univ Finance & Econ, Inst Land & Urban Rural Dev, Hangzhou 310018, Zhejiang, Peoples R China;

    Zhejiang Univ, Coll Environm & Resource Sci, Inst Agr Remote Sensing & Informat Technol, Hangzhou 310058, Zhejiang, Peoples R China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    Non-grain production; Spatiotemporal dynamics; Grain security; Environmental pressure; Economic benefits;

    机译：非粮食生产;时空动态;粮食安全;环境压力;经济效益;

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