Speaker: Dr. Min Chen
Seminar Title: Unraveling the Complexities of Optical Vegetation Indices
Abstract: Seminar summary: Vegetation Indices (VIs), typically derived from satellite observations, have been a transformative force in advancing our comprehension of terrestrial ecosystems. They offer comprehensive insights into various vegetation properties. However, the interpretation of VIs is a complex endeavor, influenced by a multitude of factors. These factors have presented formidable challenges, often hindering researchers' ability to derive definitive conclusions regarding ecosystem changes. In this talk, I will dive into the history, ecological applications, and challenges surrounding VIs, tracing their evolution and emphasizing the importance of spectral sensitivity and suitability for specific applications. An example paradox will be discussed in the talk. This paradox emerges from the interpretation of vegetation 'greenness' as observed through VIs in two distinct ecosystems: the US Corn Belt and the Amazon rainforest. This captivating example illuminates the profound impact of structural complexity on the accurate interpretation of remotely sensed VIs and their role in assessing global vegetation changes.
Host: Yanlan Liu
