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| Titel |
Analysis of land cover change and its driving forces in a desert oasis landscape of Xinjiang, northwest China |
| VerfasserIn |
T. Amuti, G. Luo |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1869-9510
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| Digitales Dokument |
URL |
| Erschienen |
In: Solid Earth ; 5, no. 2 ; Nr. 5, no. 2 (2014-11-18), S.1071-1085 |
| Datensatznummer |
250115346
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| Publikation (Nr.) |
 copernicus.org/se-5-1071-2014.pdf |
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| Zusammenfassung |
| The combined effects of drought, warming and the changes in land cover have
caused severe land degradation for several decades in the extremely arid
desert oases of southern Xinjiang, northwest China. Land cover
classifications of Landsat images in 1990, 2000 and 2008 were performed based
on the multistage supervised classification scheme using the maximum likelihood
classifier integrated with conventional vegetation and soil indexes, which
improved overall accuracies by 4–5% compared to the standard classification
method. Based on the detection of changes in land cover during 1990–2008
using remote sensing (RS) and a geographic information system (GIS), it can be
found that the oasis significantly (+35%) increased, while the area of
ecotone decreased (−43%). The major trends of the land cover changes
were the notable growth of the oasis and the reduction of the desert–oasis
ecotone. These changes were mainly a result of the intensified human
activities such as land and water exploitation as well as overgrazing. The
results of this study indicate that the oasis environment will be
deteriorated by increase in potential areas of land degradation if the trend
of desert moving further inward and the shrinking of the ecotone continues
over the next decades. |
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