|
|||||
|
|
Environmental change detection in the central part of Iraq using remote sensing data and GIS |
|
| Authors: | Arsalan A Othman Younus I Al-Saady Ahmed K Al-Khafaji Richard Gloaguen |
| Institution: | 1. Remote Sensing Group, Institute of Geology, TU Freiberg, Bernhard-von-Cotta-Strasse 2, 09596, Freiberg, Germany 2. Iraq Geological Survey, Al-Andalus Square, Baghdad, Iraq 3. Dept. of Geology, College of Science, University of Baghdad, Al-Andalus Square, Baghdad, Iraq 4. Water Science Group, Dept. of Geology, College of Science, University of Baghdad, Baghdad, Iraq 5. Remote Sensing Group, Institute of Geology, TU Freiberg, Bernhard-von-Cotta-Strasse 2, 09596, Freiberg, Germany |
| Abstract: | This study aims to assess the potential of several ancillary input data for the improvement of unsupervised land cover change detection in arid environments. The study area is located in Central Iraq where desertification has been observed. We develop a new scheme based on known robust indices. We employ Landsat (multispectral scanner, thematic mapper, and enhanced thematic mapper) satellite data acquired in 1976, 1990, and 2002. We use the Normalized Deferential Vegetation Index, Normalized Differential Water Index (NDWI), Salinity Index (SI), and Eolian Mapping Index. Two new equations were applied for the SI and the NDWI indices. Validation was performed using ground truth data collected in 16 days. We show that such an approach allows a robust and low-cost alternative for preliminary and large-scale assessments. This study shows that desertification has increased in the study area since 1990. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |