通过转换作物的创新发生在美国农业的各种边缘
Matthew M Kling1,2, Christopher T Brittain3, Gillian L Galford2,4
1Department of Biology, University of Vermont, Burlington, VT 05405.
概括
农民经常转换作物,特别是在多样化或较少耕种的地区,以适应农业. 这种动态的本地作物转换是全国农业恢复力的关键.
科学领域:
- 农业科学 农业科学
- 遥感 遥感 遥感 遥感
- 环境科学 环境科学
背景情况:
- 转换作物对于农业适应环境,文化和市场变化至关重要.
- 了解当地的作物转换模式对于分析更广泛的农业趋势至关重要.
研究的目的:
- 描述美国各地的当地作物交换模式.
- 分析作物切换器的空间和时间新性.
主要方法:
- 使用美国农业部 (USDA) 农田数据层 (CDL).
- 分析了从2008年到2022年的高分辨率 (30米像素大小) 遥感农田数据.
- 应用了一个框架,根据时间,空间和类别的新性对作物切换进行分类.
主要成果:
- 美国每年超过6%的农田发生了作物转换.
- 切换在多样化,稀疏耕种的景观中最常见,在同质的地区 (如中西部玉米带) 最不常见.
- 对于不同维度的作物新性 (时间,空间,分类) 出现了不同的空间模式.
结论:
- 转换作物是美国农场的一个动态和多方面的现象.
- 当地的作物转换创新在区域上有所不同,影响了农业系统的弹性.
- 研究结果表明,潜在的社会和经济因素影响农民的作物选择.
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