宽带规范差异反射率指数和规范红绿指数作为小麦和豆类植物干旱的衡量标准
Ekaterina Sukhova1, Yuriy Zolin1, Alyona Popova1
1Department of Biophysics, N.I. Lobachevsky State University of Nizhny Novgorod, 603950 Nizhny Novgorod, Russia.
Plants (Basel, Switzerland)
|January 11, 2025
概括
宽带和RGB指数有效地检测植物的干旱压力. 特定的指数,如红绿RI ((659,553) 和其RGB模拟NRGI,显示对干旱的高度敏感性,有助于植物种植.
科学领域:
- 农业科学 农业科学
- 植物生理学 植物生理学
- 遥感技术 遥感技术 遥感技术
背景情况:
- 全球气候变化加剧干旱状况,影响作物产量.
- 遥感利用光谱光特性,对于检测干旱等植物压力因素至关重要.
- 改善植物种植的遥感方法是一个重要的应用任务.
研究的目的:
- 分析宽带规范差异反射率指数和RGB指数对豆类和小麦土壤干旱的敏感性.
- 通过使用反射率指数来确定用于干旱检测的最佳光谱带宽.
- 评估干旱监测的特定指数RI ((659,553) 和NRGI的有效性.
主要方法:
- 在干旱条件下的反射率指数显著变化的热图分析.
- 计算和比较宽带规范化差异反射率指数和RGB指数.
- 评估RI ((659,553) 和其RGB模拟NRGI对干旱压力的敏感性.
主要成果:
- 频谱带宽的增加并没有持续降低反射率指数在干旱检测中的意义.
- 红色和绿色带宽的指数RI ((659,553)) 显示植物对干旱的敏感性很强.
- 通过彩色摄像头测量的正常化红绿指数 (NRGI) 也被证明对干旱很敏感,与RI (659,553) 有很强的相关性.
结论:
- 宽带和RGB指数是检测植物干旱压力的可行工具.
- 像RI ((659,553) 和NRGI这样的特定指数提供了有效的方法来监测干旱对作物的影响.
- 这些发现有助于开发改进的遥感技术,用于精准农业和干旱管理.
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