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在2000年至2020年期间,中国耕地的时空变化

Wenqi Zhang¹, Ruiqing Qie¹

¹School of Economics and Management, Jilin Agricultural University, Changchun, China.

|January 17, 2024

概括

中国中国中国中国.

科学领域:

* 土地使用变化和粮食安全
* 对耕地动态的时空分析.

背景情况:

* 自21世纪以来,中国的快速城市化导致了大量的耕地丧失.
* 了解区域差异和土地利用变化的时间模式对于粮食安全至关重要.

研究的目的:

*从2000年到2020年,量化中国耕地变化的时间和空间模式.
*分析这些土地使用变化的驱动因素和区域差异.

主要方法:

*使用全球土地覆盖数据集 (GlobeLand30) 进行分析.
* 经过二十年的研究,耕地数量和空间分布发生了变化.

主要成果:

*中国在2000-2020年间损失了54,996平方公里的耕地,在2010-2020年间损失加速.
*由于城市扩张,东部沿海地区面临严重的净损失 (42,989平方公里).
* 西部地区的森林/草原开发净增长 (11,583平方公里),尽管生态脆弱.

结论:

*由于城市化和土地转型政策,耕地损失正在加速.
* 地区差异很大,东部的损失被西方的收益所抵消.
*未来的政策必须平衡生态和经济价值观,以实现可持续的土地管理.

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