Using multisource data and the V-I-S model in assessing the urban expansion of Riyadh city, Saudi Arabia
| Autor: | Fethi Ahmed, Yusuf A. Aina, Alex Wafer, Habib M. Alshuwaikhat, Elhadi Adam |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
land -use/-cover change
Atmospheric Science 010504 meteorology & atmospheric sciences 0211 other engineering and technologies 02 engineering and technology 01 natural sciences lcsh:Oceanography riyadh Urban analysis lcsh:GC1-1581 urban growth boundary Computers in Earth Sciences 021101 geological & geomatics engineering 0105 earth and related environmental sciences General Environmental Science business.industry Applied Mathematics lcsh:QE1-996.5 Environmental resource management Urban expansion lcsh:Geology Geography v-i-s model Remote sensing (archaeology) spatial metrics Sustainability Urban growth boundary business urban expansion |
| Zdroj: | European Journal of Remote Sensing, Vol 52, Iss 1, Pp 557-571 (2019) |
| ISSN: | 2279-7254 |
| DOI: | 10.1080/22797254.2019.1691469 |
| Popis: | This paper examines the application of remote sensing, based on the Vegetation-Impervious surface-Soil (V-I-S) model and spatial metrics, in an urban analysis for promoting sustainability and understanding urban growth theory. In order to improve the accuracy of land-cover classification, spectral angle mapping (SAM), spectral mixture analysis (SMA) and band ratioing were applied on satellite images for land-cover classification and comparison of the discrimination efficiency of these techniques. For the SMA, subsets of the Landsat (2, 3, 4, 5, and 7) and ASTER (1, 2, and 3N) images were selected. After endmember extraction and purification, the Bayesian probability of each component was computed and used for spectral unmixing. The classified images of different years were compared to analyze the changes in land-use and spatial pattern using V-I-S, a form of percentage of landscape (PLAND) and annualized urban sprawl index (AUSI). The result indicates that the performance of band ratioing (69% accuracy) is not as good as that of SAM (75%) and SMA (86%) in discriminating between vegetation and agricultural land. It is concluded from the land-use analysis that the growth dynamics substantiate the urban theory of diffusion and coalescence and urban growth management strategies have not been completely successful. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|