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Journal of Arid Land  2017, Vol. 9 Issue (4): 558-567    DOI: 10.1007/s40333-017-0062-y
Orginal Article     
Relative importance of climate factors and human activities in impacting vegetation dynamics during 2000-2015 in the Otindag Sandy Land, northern China
Wenyong MA1,2, Xunming WANG1,2,*(), Na ZHOU1,3, Linlin JIAO1,2
1 Key Laboratory of Water Cycle & Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
2 University of Chinese Academy of Sciences, Beijing 100049, China
3 College of Management Science and Engineering, Hebei University of Economics and Business, Shijiazhuang 050061, China
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In recent years, there has been increasing research interests in differentiating the relative importance of climate factors and human activities in impacting vegetation dynamics. In this study, based on residual trend method, we used MOD13A3 (MODIS vegetation index product), MCD12Q1 (MODIS land cover product) and meteorological datasets to differentiate the relative importance of climate factors and human activities in impacting vegetation dynamics during 2000-2015 in the Otindag Sandy Land, northern China. Results show that during the study period (2000-2015), the overall vegetation condition had improved in the Otindag Sandy Land. The driving forces of vegetation dynamics differed spatially in the whole study area over the study period. The area with vegetation degradation solely resulted from human activities accounted for 8.23% of the study area, while the area with vegetation degradation resulted from others (including climate factors and combination of climate factors and human activities) occupied 1.53%. The area with vegetation recovery benefitted from human activities occurred over 26.02% of the study area; the area benefitted from climate factors accounted for 23.69%; and the area benefitted from both climate factors and human activities occupied 37.74%. All in all, impacts of climate factors and human activities on vegetation dynamics varied at the county/city/banner scales and locality-specific measures should be adopted to protect the environments.

Key wordsvegetation      NDVI      climate factors      human factors      Otindag Sandy Land     
Received: 17 December 2016      Published: 10 August 2017
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Cite this article:

Wenyong MA, Xunming WANG, Na ZHOU, Linlin JIAO. Relative importance of climate factors and human activities in impacting vegetation dynamics during 2000-2015 in the Otindag Sandy Land, northern China. Journal of Arid Land, 2017, 9(4): 558-567.

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