Technical Note: Multispectral lidar time series of pine canopy chlorophyll content
نویسندگان
چکیده
We present an empirical application of multispectral laser scanning for monitoring the seasonal and spatial changes in pine chlorophyll (a+ b) content and upscaling the accurate leaf-level chlorophyll measurements into branch and tree level. The results show the capability of the new instrument for monitoring the changes in the shape and physiology of tree canopy: the spectral indices retrieved from the multispectral point cloud agree with laboratory measurements of the chlorophyll a and b content. The approach opens new prospects for replacing destructive and labourintensive manual sampling with remote observations of tree physiology.
منابع مشابه
Retrieval of forest chlorophyll content using canopy structure parameters derived from multi-angle data: the measurement concept of combining nadir hyperspectral and off-nadir multispectral data
Retrieval of forest chlorophyll content using canopy structure parameters derived from multi-angle data: the measurement concept of combining nadir hyperspectral and off-nadir multispectral data Anita Simic a , Jing M. Chen a & Thomas L. Noland b a Department of Geography, University of Toronto, 100 St. George Street, Toronto, ON, M5S 3G3, Canada b Ontario Ministry of Natural Resources, Ontario...
متن کاملExploring the relationship between reflectance red edge and chlorophyll content in slash pine.
Chlorophyll is a key indicator of the physiological status of a forest canopy. However, its distribution may vary greatly in time and space, so that the estimation of chlorophyll content of canopies or branches by extrapolation from leaf values obtained by destructive sampling is labor intensive and potentially inaccurate. Chlorophyll content is related positively to the point of maximum slope ...
متن کاملNeedle chlorophyll content estimation through model inversion using hyperspectral data from boreal conifer forest canopies
Leaf chlorophyll content in coniferous forest canopies, a measure of stand condition, is the target of studies and models linking leaf reflectance and transmittance and canopy hyperspectral reflectance imagery. The viability of estimation of needle chlorophyll content from airborne hyperspectral optical data through inversion of linked leaf level and canopy level radiative transfer models is di...
متن کاملRetrieval of Biophysical Vegetation Products from Rapideye Imagery
The accurate estimation of canopy biophysical variables at sufficiently high spatial and temporal resolutions is a key requirement for operational applications in the agricultural sector. In this study, recently available multispectral RapidEye sensor data were tested for their operational suitability to estimate canopy biophysical variables in the Italian Campania region. For this purpose, two...
متن کاملConcept for Forest Parameter Estimation Based on Combined Imaging Spectrometer and Lidar Data
Both Imaging Spectrometry and LIDAR have been already investigated as independent data sources to describe and quantify forests properties. While Imaging Spectrometry provides information on the biochemical and biophysical properties of the canopy, LIDAR resolves the spatial and vertical distribution of the canopy structure (1, 2). The presented contribution outlines a concept how these two com...
متن کامل