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| Titel |
MODIS normalized difference vegetation index (NDVI) and vegetation phenology dynamics in the Inner Mongolia grassland |
| VerfasserIn |
Z. Gong, K. Kawamura, N. Ishikawa, M. Goto, T. Wulan, D. Alateng, T. Yin, Y. Ito |
| 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 ; 6, no. 4 ; Nr. 6, no. 4 (2015-11-03), S.1185-1194 |
| Datensatznummer |
250115521
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| Publikation (Nr.) |
 copernicus.org/se-6-1185-2015.pdf |
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| Zusammenfassung |
| The Inner Mongolia grassland, one of the most important grazing regions in
China, has long been threatened by land degradation and desertification,
mainly due to overgrazing. To understand vegetation responses over the last
decade, this study evaluated trends in vegetation cover and phenology
dynamics in the Inner Mongolia grassland by applying a normalized difference
vegetation index (NDVI) time series obtained by the Terra Moderate Resolution
Imaging Spectroradiometer (MODIS) during 2002–2014. The results
showed that the cumulative annual NDVI increased to over 77.10 % in the
permanent grassland region (2002–2014). The mean value of the total change
showed that the start of season (SOS) date and the peak vegetation
productivity date of the season (POS) had advanced by 5.79 and 2.43 days,
respectively. The end of season (EOS) was delayed by 5.07 days. These
changes lengthened the season by 10.86 days. Our results also confirmed that
grassland changes are closely related to spring precipitation and increasing
temperature at the early growing period because of global warming.
Overall, productivity in the Inner Mongolia Autonomous Region tends to
increase, but in some grassland areas with grazing, land degradation is
ongoing. |
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