Retrieval of Vegetation Indices Related to Leaf Water Content from a Single Index: A Case Study of <i>Eucalyptus globulus</i> (Labill.) and <i>Pinus radiata</i> (D. Don.)
The vegetation indices derived from spectral reflectance have served as an indicator of vegetation’s biophysical and biochemical parameters. Some of these indices are capable of characterizing more than one parameter at a time. This study examines the feasibility of retrieving several spectral veget...
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| Format: | Article |
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MDPI AG
2021-04-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/10/4/697 |
| _version_ | 1797538840246747136 |
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| author | Juan Villacrés Andrés Fuentes Pedro Reszka Fernando Auat Cheein |
| author_facet | Juan Villacrés Andrés Fuentes Pedro Reszka Fernando Auat Cheein |
| author_sort | Juan Villacrés |
| collection | DOAJ |
| description | The vegetation indices derived from spectral reflectance have served as an indicator of vegetation’s biophysical and biochemical parameters. Some of these indices are capable of characterizing more than one parameter at a time. This study examines the feasibility of retrieving several spectral vegetation indices from a single index under the assumption that all these indices are correlated with water content. The models used are based on a linear regression adjusted with least squares. The spectral signatures of <i>Eucalyptus globulus</i> and <i>Pinus radiata</i>, which constitute 97.5% of the forest plantation in Valparaiso region in Chile, have been used to test and validate the proposed approach. The linear models were fitted with an independent data set from which their performance was assessed. The results suggest that from the Leaf Water Index, other spectral indices can be recovered with a root mean square error up to 0.02, a bias of 1.12%, and a coefficient of determination of 0.77. The latter encourages using a sensor with discrete wavelengths instead of a continuum spectrum to estimate the forestry’s essential parameters. |
| first_indexed | 2024-03-10T12:37:08Z |
| format | Article |
| id | doaj.art-db23bb1af3324050ad6e6097fefd3c5f |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-10T12:37:08Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
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| series | Plants |
| spelling | doaj.art-db23bb1af3324050ad6e6097fefd3c5f2023-11-21T14:14:18ZengMDPI AGPlants2223-77472021-04-0110469710.3390/plants10040697Retrieval of Vegetation Indices Related to Leaf Water Content from a Single Index: A Case Study of <i>Eucalyptus globulus</i> (Labill.) and <i>Pinus radiata</i> (D. Don.)Juan Villacrés0Andrés Fuentes1Pedro Reszka2Fernando Auat Cheein3Department of Electronic Engineering, Universidad Técnica Federico Santa María, Av. España 1680, Valparaiso 2390123, ChileDepartment of Industrial Engineering, Universidad Técnica Federico Santa María, Av. España 1680, Valparaiso 2390123, ChileFaculty of Engineering and Sciences, Universidad Adolfo Ibáñez, Santiago 7941169, ChileDepartment of Electronic Engineering, Universidad Técnica Federico Santa María, Av. España 1680, Valparaiso 2390123, ChileThe vegetation indices derived from spectral reflectance have served as an indicator of vegetation’s biophysical and biochemical parameters. Some of these indices are capable of characterizing more than one parameter at a time. This study examines the feasibility of retrieving several spectral vegetation indices from a single index under the assumption that all these indices are correlated with water content. The models used are based on a linear regression adjusted with least squares. The spectral signatures of <i>Eucalyptus globulus</i> and <i>Pinus radiata</i>, which constitute 97.5% of the forest plantation in Valparaiso region in Chile, have been used to test and validate the proposed approach. The linear models were fitted with an independent data set from which their performance was assessed. The results suggest that from the Leaf Water Index, other spectral indices can be recovered with a root mean square error up to 0.02, a bias of 1.12%, and a coefficient of determination of 0.77. The latter encourages using a sensor with discrete wavelengths instead of a continuum spectrum to estimate the forestry’s essential parameters.https://www.mdpi.com/2223-7747/10/4/697fuel moisture contentvegetation indicesspectral reflectance<i>Eucalyptus globulus</i><i>Pinus radiata</i> |
| spellingShingle | Juan Villacrés Andrés Fuentes Pedro Reszka Fernando Auat Cheein Retrieval of Vegetation Indices Related to Leaf Water Content from a Single Index: A Case Study of <i>Eucalyptus globulus</i> (Labill.) and <i>Pinus radiata</i> (D. Don.) Plants fuel moisture content vegetation indices spectral reflectance <i>Eucalyptus globulus</i> <i>Pinus radiata</i> |
| title | Retrieval of Vegetation Indices Related to Leaf Water Content from a Single Index: A Case Study of <i>Eucalyptus globulus</i> (Labill.) and <i>Pinus radiata</i> (D. Don.) |
| title_full | Retrieval of Vegetation Indices Related to Leaf Water Content from a Single Index: A Case Study of <i>Eucalyptus globulus</i> (Labill.) and <i>Pinus radiata</i> (D. Don.) |
| title_fullStr | Retrieval of Vegetation Indices Related to Leaf Water Content from a Single Index: A Case Study of <i>Eucalyptus globulus</i> (Labill.) and <i>Pinus radiata</i> (D. Don.) |
| title_full_unstemmed | Retrieval of Vegetation Indices Related to Leaf Water Content from a Single Index: A Case Study of <i>Eucalyptus globulus</i> (Labill.) and <i>Pinus radiata</i> (D. Don.) |
| title_short | Retrieval of Vegetation Indices Related to Leaf Water Content from a Single Index: A Case Study of <i>Eucalyptus globulus</i> (Labill.) and <i>Pinus radiata</i> (D. Don.) |
| title_sort | retrieval of vegetation indices related to leaf water content from a single index a case study of i eucalyptus globulus i labill and i pinus radiata i d don |
| topic | fuel moisture content vegetation indices spectral reflectance <i>Eucalyptus globulus</i> <i>Pinus radiata</i> |
| url | https://www.mdpi.com/2223-7747/10/4/697 |
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