探索地面观测和遥感花春季现象学的关系
Sofia Bajocco1, Mara Di Giulio2, Abdoul Hamid Mohamed Sallah3
1Research Centre for Agriculture and Environment (CREA-AA), CREA-Council for Agricultural Research and Economics, Via della Navicella 2-4, Rome, 00184, Italy.
International journal of biometeorology
|November 8, 2024
概括
使用MODIS增强植被指数 (EVI) 数据对子现象学的卫星遥感精确追踪关键生长阶段,使得近乎实时的作物监测成为可能. 这项研究将EVI指标与地面观测联系起来,显示了农业运营应用的潜力.
科学领域:
- 农业科学 农业科学
- 遥感 遥感 遥感 遥感
- 植物现象学 植物现象学
背景情况:
- 农作物现象学对于农业监测至关重要,传统上依赖于现场调查或卫星数据.
- 在地面观测和来自卫星的现象学之间建立关系,使得大规模的近乎实时的监测成为可能.
- 使用这种综合方法进行花现象学监测以前没有被探索过.
研究的目的:
- 从MODIS增强植被指数 (EVI) 数据中提取子生产地区的现象指标.
- 将这些来自卫星的指标与土耳其的地面现象数据 (BBCH尺度) 进行比较.
- 评估遥感表态与子发育阶段之间的同步性和相关性.
主要方法:
- 利用土耳其子地区的2019-2022年的MODIS EVI数据.
- 提取了关键的现象学指标 (绿色化,色日期,门20%,季节开始,季节高峰,稳定日期,成熟度).
- 将提取的指标与当地果园的BBCH尺度地面现象学数据进行比较.
主要成果:
- 卫星表象学数据,如翻转日期和值20%,与叶子的出现和展开有显著的相关性.
- 关键的现象学事件,包括雌性开花和集群的出现,与特定的EVI曲线动态暂时保持一致.
- 雌性开花之前有20%的植被发育,并且集群的外观与EVI峰值 (稳定日期) 相一致.
结论:
- 源自MODIS EVI的遥感表态学有效地捕捉了花的现象发展.
- 建立的关系使近乎实时的大规模监测子作物成为可能.
- 该方法可用于操作现象学监测,未来的工作考虑环境因素和衰老.
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