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NDVI spatial pattern and its differentiation on the Mongolian Plateau
ZHANG Xueyan; HU Yunfeng; ZHUANG Dafang; QI Yongqing; MA Xin
Corresponding AuthorHU Yunfeng
AbstractGIMMS NDVI database and geo-statistics were used to depict the spatial distribution and temporal stability of NDVI on the Mongolian Plateau. The results demonstrated that: (1) Regions of interest with high NDVI indices were distributed primarily in forested mountainous regions of the east and the north, areas with low NDVI indices were primarily distributed in the Gobi desert regions of the west and the southwest, and areas with moderate NDVI values were mainly distributed in a middle steppe strap from northwest to southeast. (2) The maximum NDVI values maintained for the past 22 years showed little variation. The average NDVI variance coefficient for the 22-year period was 15.2%. (3) NDVI distribution and vegetation cover showed spatial autocorrelations on a global scale. NDVI patterns from the vegetation cover also demonstrated anisotropy; a higher positive spatial correlation was indicated in a NW-SE direction, which suggested that vegetation cover in a NW-SE direction maintained increased integrity, and vegetation assemblage was mainly distributed in the same specific direction. (4) The NDVI spatial distribution was mainly controlled by structural factors, 88.7% of the total spatial variation was influenced by structural and 11.3% by random factors. And the global autocorrelation distance was 1178 km, and the average vegetation patch length (NW-SE) to width (NE-SW) ratio was approximately 2.4:1.0.
KeywordLand-use Change Time-series Vegetation Activity Landscape Pattern Fourier-analysis Satellite Data Asian Dust Climate China Index
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China 40701150;National Science and Technology Support Project 07H70163AR;National Key Project of Scientific and Technical Supporting Programs 2006BAC08B03 2008BAC34B06
Document Type期刊论文
Corresponding AuthorHU Yunfeng
Recommended Citation
GB/T 7714
ZHANG Xueyan,HU Yunfeng,ZHUANG Dafang,et al. NDVI spatial pattern and its differentiation on the Mongolian Plateau[J]. JOURNAL OF GEOGRAPHICAL SCIENCES,2009,19(4):403-415.
APA ZHANG Xueyan,HU Yunfeng,ZHUANG Dafang,QI Yongqing,&MA Xin.(2009).NDVI spatial pattern and its differentiation on the Mongolian Plateau.JOURNAL OF GEOGRAPHICAL SCIENCES,19(4),403-415.
MLA ZHANG Xueyan,et al."NDVI spatial pattern and its differentiation on the Mongolian Plateau".JOURNAL OF GEOGRAPHICAL SCIENCES 19.4(2009):403-415.
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