[1]GAN Xiao-li,HAO Yu-pei,ZHAI Yong-hong,et al.Study on Dynamic Change of Vegetation and Hydrology in Bayin River Basin[J].Research of Soil and Water Conservation,2014,21(02):323-326.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 02
Page number:
323-326
Column:
Public date:
2014-04-28
- Title:
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Study on Dynamic Change of Vegetation and Hydrology in Bayin River Basin
- Author(s):
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GAN Xiao-li1, HAO Yu-pei2, ZHAI Yong-hong3, WANG Jian-rong3, CHAO Shi-jun3, LIU Lu-san4
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1. Chinese Society For Urban Studies, Academic Exchange Department, Beijing 100835, China;
2. School of Water Resources & Environment, China University of Geosciences, Beijing 100083, China;
3. Qinghai Research and Design Academy of Environmental Science, Xi’ning 810007, China;
4. Chinese Research Academy of Environmental Sciences, Beijing 100012, China
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- Keywords:
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Bayin River Basin; vegetation index (NDVI); ecology; remote sensing
- CLC:
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S715.3
- DOI:
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- Abstract:
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In recent years, the ecological environment deterioration has become one of the regional ecological environments of China development research focus area, vegetation is the most important and sensitive natural factor on ecological environment, vegetation cover change has an important impact on the regional ecological environment quality. This paper, extracted vegetation index (NDVI) in vegetation season (July) of Ba Yin River Basin from 2002 to 2012 based on geographic information systems and remote sensing application technology, and by using the method of monadic linear regression analysis with MODIS data from the U.S. National Aeronautics and Space Administration (NASA) which spatial resolution of global data center is 250 m and the time resolution is 16 days, adopted a linear regression trend analysis method to calculate the change rate of the vegetation index in this basin in the past 11 years, analyzed the changes in vegetation distribution of Bayin River Basin in the past 11 years, and simply analyzed the climate influence factors on vegetation growth. The results show that in the past 11 years, most of the vegetation index in Bayin River Basin was between 0.1 and 0.4, the change rate of the vegetation index was between -0.04 and 0.04 in July, the correlation coefficients of vegetation growth and temperature and rainfall are 0.06 and 0.03, respectively. This shows the entire range of inland vegetation change in direction towards benign and deterioration in Bayin River basin is roughly equal, but has presented a very low distribution, and the destruction of natural vegetation was the main reason for causing soil erosion, so that the regional vegetation ecological environment was very fragile, and will need to be improved.