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Details for article 127 of 249 found articles
| Title: |
Interannual variability of vegetation cover in the Chinese Heihe River Basin and its relation to meteorological parameters |
| Author: |
Ma, Mingguo Frank, Veroustraete |
| Appeared in: |
International journal of remote sensing |
| Paging: | Volume 27 (2006) nr. 16 pages 3473-3486 |
| Year: |
2006-08-01 |
| Contents: |
A long time series (20 years) of Advanced Very High Resolution Radiometer (AVHRR) data with 8 km resolution are used to monitor vegetation cover change in the Heihe river basin. Linear regression is used to characterize the trends in vegetation cover change. The yearly Maximum Normalized Difference Vegetation Index (MNDVI) in the Heihe river basin elicits an explicit inter-annual change in the period 1982-2001. An increase in MNDVI occurs in mid-basin oasis mainly, while a decrease in MNDVI is mainly observed in the mountainous and Alxa's natural oasis regions of the Heihe river basin. Precipitation is the major climate driving force for vegetation cover changes in the Heihe River Basin. The MNDVI is sensitive to precipitation and its sensitivity decreases with increasing precipitation. Precipitation has a higher effect on the mountainous regions' vegetation cover than on the oasis regions' vegetation cover. Precipitation also elicits a lag effect on the MNDVI with a phase of one year at a yearly scale mainly in the mountainous regions of the Heihe River Basin. In the Heihe River Basin, the temperature has a slight and positive effect on the oasis regions' vegetation cover and a slight and negative effect on the mountainous regions' vegetation cover. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 127 of 249 found articles
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