Journal
INTERNATIONAL JOURNAL OF DIGITAL EARTH
Volume 8, Issue 1, Pages 56-73Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17538947.2013.848946
Keywords
vegetation green-up date; snow cover duration; NDVI; phenology; snow melting date
Categories
Funding
- National Natural Science Foundation of China [41271372]
- National Basic Research Program of China (973) [2009CB723906]
- USGS [G13PC00028]
Ask authors/readers for more resources
Understanding the relationships between snow and vegetation is important for interpretation of the responses of alpine ecosystems to climate changes. The Qinghai-Tibetan Plateau is regarded as an ideal area due to its undisturbed features with low population and relatively high snow cover. We used 500 m Moderate Resolution Imaging Spectroradiometer (MODIS) datasets during 2001-2010 to examine the snow-vegetation relationships, specifically, (1) the influence of snow melting date on vegetation green-up date and (2) the effects of snow cover duration on vegetation greenness. The results showed that the alpine vegetation responded strongly to snow phenology (i.e., snow melting date and snow cover duration) over large areas of the Qinghai-Tibetan Plateau. Snow melting date and vegetation green-up date were significantly correlated (p < 0.1) in 39.9% of meadow areas (accounting for 26.2% of vegetated areas) and 36.7% of steppe areas (28.1% of vegetated areas). Vegetation growth was influenced by different seasonal snow cover durations (SCDs) in different regions. Generally, the December-February and March-May SCDs played a significantly role in vegetation growth, both positively and negatively, depending on different water source regions. Snow's positive impact on vegetation was larger than the negative impact.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available