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Trend analysis of vegetation dynamics in Qinghai–Tibet Plateau using Hurst Exponent

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Peng, J., Liu, Z.H., Liu, Y.H., Wu, J.S., Han, Y.N. (2012). Trend analysis of vegetation dynamics in Qinghai–Tibet Plateau using Hurst Exponent. Ecological Indicators, 14(1), 28-39. doi:10.1016/j.ecolind.2011.08.011

文献信息
Type Of Reference JOUR
Title Trend analysis of vegetation dynamics in Qinghai–Tibet Plateau using Hurst Exponent
Authors Peng, Jian| Liu, Zhenhuan| Liu, Yinghui| Wu, Jiansheng| Han, Yinan|
Secondary Title Ecological Indicators
Abstract As one of the most sensitive areas responding to global environmental change, especially global climate change, Qinghai–Tibet Plateau has been recognized as a hotspot for coupled studies on global terrestrial ecosystem change and global climate change. As an important component of terrestrial ecosystems, vegetation dynamic has become one of the key issues in global environmental change, and numerous case studies have been conducted on vegetation dynamic trend in different study periods. However, few are focused on the quantitative analysis of the consistency of vegetation dynamic trends after the study periods. In the study, taking Qinghai–Tibet Plateau as a case, vegetation dynamic trend during 1982–2003 were analyzed, with the application of the method of linear regression analysis. The results showed that, vegetation dynamics in Qinghai–Tibet Plateau experienced a significant increasing as a whole, with nearly 50% forest degradation in the study period. And among the 7 kinds of vegetation types, the change of forest was the most fluctuant with desert the least one. Furthermore, the consistency of vegetation dynamic trends after the study period, was quantified using Hurst Exponent and the method of R/S analysis. The results showed high consistency of future vegetation dynamic trends for the whole plateau, and inconsistent areas were mainly meadow and steppe distributed in the middle or east of the plateau. It was also convinced that, vegetation dynamic trends in the study area were significantly influenced by topography, especially the elevation.
Date 2012///
Year 2012
DOI 10.1016/j.ecolind.2011.08.011
Database Provider ScienceDirect
volume 14
Issue Number 1
Start Page 28
Alternate Title1 Ecological Indicators
Issn 1470-160X
Url http://www.sciencedirect.com/science/article/pii/S1470160X1100255X
Access Date 2013/11/17/06:57:24
Keywords Consistency analysis| Hurst Exponent| NDVI| Qinghai–Tibet plateau| R/S analysis| Vegetation dynamic trend|
file_attachments2 http://www.sciencedirect.com/science/article/pii/S1470160X1100255X
notes <p>http://westdc.westgis.ac.cn/data/acb49ce8-2bfe-4ab4-97ff-e6e727110703</p>
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