Consideration of NDVI thematic changes in density analysis and floristic composition of Wadi Yalamlam, Saudi Arabia
<p>Wadi Yalamlam is known as one of the significant wadis in the west of Saudi Arabia. It is a very important water source for the western region of the country. Thus, it supplies the holy places in Mecca and the surrounding areas with drinking water. The floristic composition of Wadi Yala...
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2018-11-01
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doaj-e665c96b98714cf3a45e5e044a11118c2020-11-25T00:31:03ZengCopernicus PublicationsGeoscientific Instrumentation, Methods and Data Systems2193-08562193-08642018-11-01729730610.5194/gi-7-297-2018Consideration of NDVI thematic changes in density analysis and floristic composition of Wadi Yalamlam, Saudi ArabiaA. Y. Aldhebiani0M. Elhag1A. K. Hegazy2H. K. Galal3H. K. Galal4N. S. Mufareh5Biological Sciences Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi ArabiaDepartment of Hydrology and Water Resources Management, Faculty of Meteorology, Environment & Arid Land Agriculture, King Abdulaziz University Jeddah, 21589, Saudi ArabiaDepartment of Botany, Faculty of Science, Cairo University, Giza, EgyptBiological Sciences Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi ArabiaBotany & Microbiology Department, Faculty of Science, Assiut University, Assiut, EgyptBiological Sciences Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia<p>Wadi Yalamlam is known as one of the significant wadis in the west of Saudi Arabia. It is a very important water source for the western region of the country. Thus, it supplies the holy places in Mecca and the surrounding areas with drinking water. The floristic composition of Wadi Yalamlam has not been comprehensively studied. For that reason, this work aimed to assess the wadi vegetation cover, life-form presence, chorotype, diversity, and community structure using temporal remote sensing data. Temporal datasets spanning 4 years were acquired from the Landsat 8 sensor in 2013 as an early acquisition and in 2017 as a late acquisition to estimate normalized difference vegetation index (NDVI) changes. The wadi was divided into seven stands. Stands 7, 1, and 3 were the richest with the highest Shannon index values of 2.98, 2.69, and 2.64, respectively. On the other hand, stand 6 has the least plant biodiversity with a Shannon index of 1.8. The study also revealed the presence of 48 different plant species belonging to 24 families. Fabaceae (17 %) and Poaceae (13 %) were the main families that form most of the vegetation in the study area, while many families were represented by only 2 % of the vegetation of the wadi. NDVI analysis showed that the wadi suffers from various types of degradation of the vegetation cover along with the wadi main stream.</p>https://www.geosci-instrum-method-data-syst.net/7/297/2018/gi-7-297-2018.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
A. Y. Aldhebiani M. Elhag A. K. Hegazy H. K. Galal H. K. Galal N. S. Mufareh |
spellingShingle |
A. Y. Aldhebiani M. Elhag A. K. Hegazy H. K. Galal H. K. Galal N. S. Mufareh Consideration of NDVI thematic changes in density analysis and floristic composition of Wadi Yalamlam, Saudi Arabia Geoscientific Instrumentation, Methods and Data Systems |
author_facet |
A. Y. Aldhebiani M. Elhag A. K. Hegazy H. K. Galal H. K. Galal N. S. Mufareh |
author_sort |
A. Y. Aldhebiani |
title |
Consideration of NDVI thematic changes in density analysis and floristic composition of Wadi Yalamlam, Saudi Arabia |
title_short |
Consideration of NDVI thematic changes in density analysis and floristic composition of Wadi Yalamlam, Saudi Arabia |
title_full |
Consideration of NDVI thematic changes in density analysis and floristic composition of Wadi Yalamlam, Saudi Arabia |
title_fullStr |
Consideration of NDVI thematic changes in density analysis and floristic composition of Wadi Yalamlam, Saudi Arabia |
title_full_unstemmed |
Consideration of NDVI thematic changes in density analysis and floristic composition of Wadi Yalamlam, Saudi Arabia |
title_sort |
consideration of ndvi thematic changes in density analysis and floristic composition of wadi yalamlam, saudi arabia |
publisher |
Copernicus Publications |
series |
Geoscientific Instrumentation, Methods and Data Systems |
issn |
2193-0856 2193-0864 |
publishDate |
2018-11-01 |
description |
<p>Wadi Yalamlam is
known as one of the significant wadis in the west of Saudi Arabia. It is a
very important water source for the western region of the country. Thus, it
supplies the holy places in Mecca and the surrounding areas with drinking
water. The floristic composition of Wadi Yalamlam has not been
comprehensively studied. For that reason, this work aimed to assess the wadi
vegetation cover, life-form presence, chorotype, diversity, and community
structure using temporal remote sensing data. Temporal datasets spanning
4 years were acquired from the Landsat 8 sensor in 2013 as an early
acquisition and in 2017 as a late acquisition to estimate normalized
difference vegetation index (NDVI) changes. The wadi was divided into seven
stands. Stands 7, 1, and 3 were the richest with the highest Shannon index
values of 2.98, 2.69, and 2.64, respectively. On the other hand, stand 6 has
the least plant biodiversity with a Shannon index of 1.8. The study also
revealed the presence of 48 different plant species belonging to 24 families.
Fabaceae (17 %) and Poaceae (13 %) were the main families that form
most of the vegetation in the study area, while many families were
represented by only 2 % of the vegetation of the wadi. NDVI analysis
showed that the wadi suffers from various types of degradation of the
vegetation cover along with the wadi main stream.</p> |
url |
https://www.geosci-instrum-method-data-syst.net/7/297/2018/gi-7-297-2018.pdf |
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