Evaluation of reflectance spectroscopy indices for estimation of chlorophyll content in leaves of a tropical tree species

Title:

Evaluation of reflectance spectroscopy indices for estimation of chlorophyll content in leaves of a tropical tree species

Creator:

Mielke, M. S., Schaffer, B., and Schilling, A. C.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:7e43ad4e-f753-4445-a16d-9157c07a0561
uuid:7e43ad4e-f753-4445-a16d-9157c07a0561
issn:0300-3604
doi:10.1007/s11099-012-0038-2

Subject:

botanika, botany, anthocyanins, ecosystem restoration, Eugenia uniflora, leaf mass per area, SPAD-502, 2, and 58

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

The effectiveness of eight spectral reflectance indices for estimating chlorophyll (Chl) content in leaves of Eugenia uniflora L., a tropical tree species widely distributed throughout the world and a key species for ecosystem restoration projects, was evaluated. Spectral reflectance indices were tested using sun and shade leaves with a broad variation in leaf mass per area (LMA). Shortly after plants were exposed to chilling temperatures, there was a dramatic visible change in some sun leaves from green to red. Prior to testing Chl-related reflectance indices, the green and red leaves were separated according to the anthocyanin reflectance index (ARI). Slightly green to dark green leaves corresponded to an ARI value less than 0.11 (n = 107), whereas slightly red to red leaves corresponded to an ARI value greater than 0.11 (n = 35). To estimate leaf Chl, two simple reflectance indices (SR680 and SR705), two normalized difference indices (ND680 and ND705), two modified reflectance indices (mSR705 and mND705), a modified Chl absorption ratio index (mCARI705) and an index insensitive to the presence of anthocyanins (CIre) were evaluated. Good estimates of leaf Chl content were obtained using the reflectance indices tested regardless of the presence of anthocyanins and changes in LMA. Based on the coefficients of determination (r2) and the root mean square errors (RMSɛc) the best results were obtained with reflectance indices measured at wavelengths of 750 and 705 nm. Considering the performance of the models the best reflectance indices to estimate Chl contents in E. uniflora leaves with a broad variation in LMA and anthocyanin contents was SR705 and mCARI705., M. S. Mielke, B. Schaffer, A. C. Schilling., and Obsahuje bibliografii

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

343-352

Source:

Photosynthetica | 2012 Volume:50 | Number:3

Harvested from:

CDK

Metadata only:

false