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Relationships between Normalized Difference Vegetation Index (NDVI) and carbon fluxes of biologic soil crusts assessed by ground measurements
Year:
2006
Source of publication :
Journal of Arid Environments
Authors :
Zaady, Eli
;
.
Volume :
64
Co-Authors:
Burgheimer, J., Remote Sensing Laboratory, Jacob Blaustein Institute for Desert Research, Ben Gurion University of the Negev, Israel
Wilske, B., Environmental Science and Energy Research, Weizmann Institute of Science, Rehovot, Israel, Department of Biogeochemistry, Max-Planck-Institute for Chemistry, Mainz, Germany
Maseyk, K., Environmental Science and Energy Research, Weizmann Institute of Science, Rehovot, Israel
Karnieli, A., Remote Sensing Laboratory, Jacob Blaustein Institute for Desert Research, Ben Gurion University of the Negev, Israel
Zaady, E., Mitrani Department for Desert Ecology, Jacob Blaustein Institute for Desert Research, Ben-Gurion University of the Negev, Israel
Yakir, D., Environmental Science and Energy Research, Weizmann Institute of Science, Rehovot, Israel
Kesselmeier, J., Department of Biogeochemistry, Max-Planck-Institute for Chemistry, Mainz, Germany
Facilitators :
From page:
651
To page:
669
(
Total pages:
19
)
Abstract:
The aim of this research was to study the relationships between the biological soil crusts (BSC), spectral reflectance and photosynthetic activity. Twenty field campaigns, each lasting several days, were conducted during the 2002-2003 rainy season at sand dune and loess environments in the north-western Negev desert of Israel. Simultaneous measurements of CO2 net exchange and spectral reflectance were carried out for several types of BSC. The Normalized Difference Vegetation Index (NDVI) was derived from the BSC reflectance and correlated with their CO2 exchange data. The relationship between NDVI and CO2 exchange is discussed in detail with respect to environmental factors, such as soil water content, air temperature, and light intensity. Fairly good correlations were found in the rainy season. The NDVI was useful in indicating the potential magnitude and capacity of the BSC assimilation activity. Furthermore, the index corresponded well with different rates of photosynthetic activity of the different types of microphytes. The results demonstrate that spectral reflectances of the BSC can be related to photosynthetic activities and posseses the potential to assess the amount of carbon sequestration by these microphytes on an areal scale using satellite images. © 2005 Elsevier Ltd. All rights reserved.
Note:
Related Files :
arid environment
Biological soil crusts
Carbon fluxes
Israel
Middle East
NDVI
Negev
photosynthesis
remote sensing
Soil crust
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More details
DOI :
10.1016/j.jaridenv.2005.06.025
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
20052
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:33
Scientific Publication
Relationships between Normalized Difference Vegetation Index (NDVI) and carbon fluxes of biologic soil crusts assessed by ground measurements
64
Burgheimer, J., Remote Sensing Laboratory, Jacob Blaustein Institute for Desert Research, Ben Gurion University of the Negev, Israel
Wilske, B., Environmental Science and Energy Research, Weizmann Institute of Science, Rehovot, Israel, Department of Biogeochemistry, Max-Planck-Institute for Chemistry, Mainz, Germany
Maseyk, K., Environmental Science and Energy Research, Weizmann Institute of Science, Rehovot, Israel
Karnieli, A., Remote Sensing Laboratory, Jacob Blaustein Institute for Desert Research, Ben Gurion University of the Negev, Israel
Zaady, E., Mitrani Department for Desert Ecology, Jacob Blaustein Institute for Desert Research, Ben-Gurion University of the Negev, Israel
Yakir, D., Environmental Science and Energy Research, Weizmann Institute of Science, Rehovot, Israel
Kesselmeier, J., Department of Biogeochemistry, Max-Planck-Institute for Chemistry, Mainz, Germany
Relationships between Normalized Difference Vegetation Index (NDVI) and carbon fluxes of biologic soil crusts assessed by ground measurements
The aim of this research was to study the relationships between the biological soil crusts (BSC), spectral reflectance and photosynthetic activity. Twenty field campaigns, each lasting several days, were conducted during the 2002-2003 rainy season at sand dune and loess environments in the north-western Negev desert of Israel. Simultaneous measurements of CO2 net exchange and spectral reflectance were carried out for several types of BSC. The Normalized Difference Vegetation Index (NDVI) was derived from the BSC reflectance and correlated with their CO2 exchange data. The relationship between NDVI and CO2 exchange is discussed in detail with respect to environmental factors, such as soil water content, air temperature, and light intensity. Fairly good correlations were found in the rainy season. The NDVI was useful in indicating the potential magnitude and capacity of the BSC assimilation activity. Furthermore, the index corresponded well with different rates of photosynthetic activity of the different types of microphytes. The results demonstrate that spectral reflectances of the BSC can be related to photosynthetic activities and posseses the potential to assess the amount of carbon sequestration by these microphytes on an areal scale using satellite images. © 2005 Elsevier Ltd. All rights reserved.
Scientific Publication
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