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Accueil du site → Doctorat → États-Unis → 2012 → Remote Sensing Analysis of a Selected Wetland in the Dasht-e-Nawar Basin, Ghazni Province, Afghanistan

George Mason University (2012)

Remote Sensing Analysis of a Selected Wetland in the Dasht-e-Nawar Basin, Ghazni Province, Afghanistan

Kalaly, Siddiq Sharif

Titre : Remote Sensing Analysis of a Selected Wetland in the Dasht-e-Nawar Basin, Ghazni Province, Afghanistan

Auteur : Kalaly, Siddiq Sharif

Université de soutenance : George Mason University

Grade : Doctor of Philosophy (PhD) 2012

Résumé
Large wetlands are rare in Afghanistan. Afghanistan’s few large wetlands are imperative for the sustainability of the local human and wildlife populations, and globally renowned for being indispensable staging and breeding areas for migratory waterfowl, waders and flamingos. A series of armed conflicts since 1979 has impeded extensive study and management of these essential wetlands. There is an urgent need to implement a wetland management program before these wetlands are lost. A rapid status assessment is necessary to enable updated and robust wetland stewardship programs. Landsat imagery since 1972 allows for the investigation of historic changes, as well as the present condition of Afghanistan’s vital wetlands. Using remote sensing data and processing techniques, this dissertation delineates and temporally analyzes the areal dynamics of the vegetation of the largest perennial wetland, Nawar Wetland, in Ghazni Province. Because there is little known about wetlands in Afghanistan, wetland delineation and temporal analysis using remote sensing is discussed as a feasible solution to the assessment of inaccessible wetlands and ultimately furthering the protection of wetlands in the country and possibly elsewhere. In the process of researching and writing this dissertation, a literature review was conducted on the natural science topics of the area studied and on the analytical techniques used to delineate and analyze temporal trends in the area. This research is the most extensive study of the Nawar Wetland and illuminates and explains the spatio-temporal trends of the wetland vegetation. This study determines the Nawar Wetland vegetation green season length ; proves the persistence of the wetland since 1972 ; and reveals and thoroughly maps the wetland spatio-temporal dynamics. This work can serve as a guide and resource for ex situ wetland delineation, wetland temporal analysis studies and wetland sustainability initiatives.

Mots clés : Geographic information system, Change detection, Environmental science, Remote sensing, Geographic information science, Wetlands Normalized difference vegetation index, Health and environmental sciences, Earth sciences

Accès au document : Proquest Dissertations & Theses

Page publiée le 15 février 2015, mise à jour le 8 septembre 2017