[1]LI Xiao-ya,ZHANG Bo,JIN Zi-bao.Dynamic Monitoring of Vegetation Coverage Change in Hedong Area of Gansu Based on MODIS-NDVI[J].Research of Soil and Water Conservation,2013,20(01):112-115.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
20
Number of periods:
2013 01
Page number:
112-115
Column:
Public date:
2013-02-28
- Title:
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Dynamic Monitoring of Vegetation Coverage Change in Hedong Area of Gansu Based on MODIS-NDVI
- Author(s):
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LI Xiao-ya, ZHANG Bo, JIN Zi-bao
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College of Geographic and Environmental Sciences, Northwest Normal University, Lanzhou 730070, China
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- Keywords:
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vegetation coverage; dimidiate pixel method; vegetation change; Hedong area
- CLC:
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Q948;TP75
- DOI:
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- Abstract:
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Based on the MODIS/Terra NDVI remote sensing data, the vegetation coverage from 2000—2010 in Hedong region was estimated and the spatial and temporal change characteristic of vegetation coverage and the driving factors was analyzed by using the dimidiate pixel model. The results showed that the average vegetation coverage was 50.93% in Hedong region where the vegetation coverage was maximum in Gannan Plateau, and the minimum value distributed in the northwestern part. The vegetation coverage decreases from south to north. The average vegetation coverage more than 60% occupied 23.06% of the region. The regional vegetation coverage in the 90.49% of the region had an increasing trend, especially in the middle of Hedong region where the vegetation coverage increased fastest (33.68%). It can be seen rainfall was the main factor on the spatial scales, and afforestation was the key influence factor on the time scale.