Abstract
The objective was to compare levels of reflectance of leaves of Eucalyptus grandis Hill ex Maiden using spectral measurements from their location in relation to the tree and the cardinal points. The experiment was carried out in the experimental area belonging to FEPAGRO, located in Santa Maria-RS. The work included the installation of a randomized block design. With the use of a spectroradiometer FieldSpec ® 3, it was measured the radiance reflected from the upper surface of leaves for further work with the software R. In the first band (400 to 700 nm), it was realized that a peak is related to total chlorophyll within the visible range. It was observed that the leaves heading east presented the highest reflectance and the leaves at south and west had the lowest one. For the second band (700 to 1000 nm), we observed a statistically significant difference only between the average values of reflectance in the pair of east-west positions, contrasting with the band that got a significant difference between the average reflectance of all pairs. The spectral response of leaves proved to be statistically different; it confirms that there are differences related to the spectral location of trees and locations of collected leaves.
| Translated title of the contribution | Spectral reflectance characterization in Eucalyptus grandis |
|---|---|
| Original language | Portuguese |
| Pages (from-to) | 285-292 |
| Number of pages | 8 |
| Journal | Floresta |
| Volume | 42 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2012 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- Reflectance curve
- Remote sensing
- Spectroradiometry