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叶绿素是植被光合作用的主要物质,准确估算叶绿素含量对植被生长健康状况和生态环境研究具有重要意义。本文利用辐射传输机制的PRO4SAIL模型模拟植被冠层光谱,以TM影像为数据源,分析了物理模型模拟反射率和遥感影像反射率与叶绿素含量之间的相关性,研究了利用多光谱信息定量反演路域植被叶绿素含量。结果表明,植被光谱与叶绿素含量之间有较强的相关性;利用PRO4SAIL模型模拟的冠层反射率反演叶绿素含量具有一定可行性,该研究成果可以为大面积路域植被冠层叶绿素含量遥感监测提供理论依据与参考。
Chlorophyll is the main material of photosynthesis in vegetation. Accurate estimation of chlorophyll content is of great significance to the research of vegetation health and ecological environment. In this paper, we use the PRO4SAIL model of radiation transmission mechanism to simulate the vegetation canopy spectrum. Taking the TM image as the data source, the correlation between simulated reflectance of physical model and remote sensing image reflectance and chlorophyll content was analyzed. Vegetation chlorophyll content. The results showed that there was a strong correlation between vegetation spectra and chlorophyll content. It is feasible to use the canopy reflectance simulated by PRO4SAIL model to retrieve chlorophyll content. The research results can be used for the remote sensing of the canopy chlorophyll content Monitoring provides a theoretical basis and reference.