Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/10673
Título : Effects of canopy LAI, crown coverage, and view angle on retrieval of leaf chlorophyll content in forest canopies
Autor : Hu, B., Miller, J. R., Goel, N. S., Zarco-Tejada, Pablo J.
Palabras clave : Chlorophyll Content
Forest Canopies
Fecha de publicación : 2001
Resumen: In this study, we used simulated data created by SPRINT and PROSPECT to investigate issues on retrieval of leaf Chlorophyll content in sugar maple canopies. Two optical indices, the reflectance index R750/R710 and the derivative index D715/D710, were employed. As anticipated, these two indices have strong correlation with Chlorophyll content with R2 over 0.99 at leaf level. At canopy level, for nadir observations, the correlation between the derivative index and leaf Chlorophyll content is 0.96 for canopies with crown coverage of 90, 75, 50 and 25 percent and canopy LAI of 4, while the correlation between the reflectance index and leaf Chlorophyll content is 0.50. Our results also show that the relationship between the derivative index and leaf Chlorophyll content derived from closed canopies can be used to predict the leaf Chlorophyll content for open canopies even for crown coverage of 25 percent with RMSE of 6.3 mg/cm2. However, with the reflectance index, RMSE increases to over 15 mg/cm2 when the relationship between the reflectance index and leaf Chlorophyll content is used for open canopies with crown coverage of 50 percent or less.
Descripción : Presented at the International Symposium of Spectral Sensing Research (ISSSR), Quebec Cityg (Canada), June 10th-15th, 2001.
URI : http://hdl.handle.net/10261/10673
Appears in Collections:(IAS) Comunicaciones congresos

Files in This Item:
File Description SizeFormat 
14.pdf8,57 kBAdobe PDFView/Open
Show full item record
 
CSIC SFX LinksSFX Query

Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.