El-Burullus Lake is one of the four Egyptian Ramsar sites that constitute internationally important wetlands as they contain a rich biodiversity and have a large number of water bird species.But the valuable resources...El-Burullus Lake is one of the four Egyptian Ramsar sites that constitute internationally important wetlands as they contain a rich biodiversity and have a large number of water bird species.But the valuable resources in El-Burullus Lake and its surrounding area have faced various threats to wetlands over recent decades.This study was carried out to evaluate the dynamics of land cover change using three change scenes of recent and past satellite data from 1990 to 2019.The study utilized ArcGIS10.7,ERDAS Imagine 14,Landsat TM(1990,1999,and 2010),Landsat OLI-TIRS(2019)to analyze the land-use/land-cover(LULC)of El-Burullus wetland.Normalized Difference Vegetation Index(NDVI)and Normal-ized Difference Water Index(NDWI)were employed to assess the change scenario of the area.Results indicated that vegetated land has increased significantly with a concomitant shrinkage in the water body and open soil during the study period.Approximately 53 km^2(7.0%)of water body and 8.7 km^2(1.3%)of open soil were lost,while vegetation areas expanded to approximately 29.9 km^2(7.4%).Factors that underpin the observed changes in the area are;reclamation projects and fish-farms which are creating the danger of drying up of the southern coastal parts of the lake,as well as spreading of reed beds(mainly:Phragmites australis)that covers about 20%of El-Burullus lake which led to dry up the lake parts.Therefore,the study suggests the need for urgent attention on conservation of remaining wetland resources for sustainable utilization for the next generation.展开更多
基金The authors would like to extend their sincere thanks to the Pan African University for Life and Earth Sciences including Health and Agriculture for providing the research grant to the second author
文摘El-Burullus Lake is one of the four Egyptian Ramsar sites that constitute internationally important wetlands as they contain a rich biodiversity and have a large number of water bird species.But the valuable resources in El-Burullus Lake and its surrounding area have faced various threats to wetlands over recent decades.This study was carried out to evaluate the dynamics of land cover change using three change scenes of recent and past satellite data from 1990 to 2019.The study utilized ArcGIS10.7,ERDAS Imagine 14,Landsat TM(1990,1999,and 2010),Landsat OLI-TIRS(2019)to analyze the land-use/land-cover(LULC)of El-Burullus wetland.Normalized Difference Vegetation Index(NDVI)and Normal-ized Difference Water Index(NDWI)were employed to assess the change scenario of the area.Results indicated that vegetated land has increased significantly with a concomitant shrinkage in the water body and open soil during the study period.Approximately 53 km^2(7.0%)of water body and 8.7 km^2(1.3%)of open soil were lost,while vegetation areas expanded to approximately 29.9 km^2(7.4%).Factors that underpin the observed changes in the area are;reclamation projects and fish-farms which are creating the danger of drying up of the southern coastal parts of the lake,as well as spreading of reed beds(mainly:Phragmites australis)that covers about 20%of El-Burullus lake which led to dry up the lake parts.Therefore,the study suggests the need for urgent attention on conservation of remaining wetland resources for sustainable utilization for the next generation.
