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JOURNAL OF DESERT RESEARCH  2013, Vol. 33 Issue (3): 662-667    DOI: 10.7522/j.issn.1000-694X.2013.00095
Desert and Desertification     
Analysis on Spatial Pattern of Blowouts in Otindag Sandy Grassland Based on ALOS Data
Huercha1,2, WANG Xiao-jiang1, ZHANG Wen-jun1, LIU Yong-hong1, HAI Long1, ZHANG Lei1, Sulenggaowa3
1.Inner Mongolia Academy of Forestry Science, Hohhot 010010, China;
2.Wuhai Forestry Bureau, Wuhai 016000, Inner Mongolia, China; 3.College of Life Science, Inner Mongolia Normal University, Hohhot 010020, China
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Abstract  

Based on ground survey information and fusion data of high-resolution multi-spectral band (10 m spatial resolution) and panchromatic band (2.5 m spatial resolution) of ALOS satellite images, we quantitatively analyzed the spatial pattern characteristics of blowouts in Otindag sandy grassland using ArcGIS and Fragstats 3.3 software. Results showed that: (1) The blowouts area accounted for 6.1% of the studied area, and the density was 0.026 per hectare, they distributed widely and aggregated in local; (2) According to the different developmental stages, the shapes of the blowouts could be divided into saucer, oval-shaped, groove and irregular shaped; (3) The relationship was significantly positive between patch area and patch shape index and patch fractal dimension respectively, and blowouts with complex shapes was formed by a number of independent blowouts; (4) Compared with blowout width and depth, the relationship between area and length was more significant; (5) Wind erosion base level was high, and the depth of the blowouts was no more than 5 m; (6) The parameters length-width and width-depth were mutually affected.

Key words:  ALOS data      Otindag sandy grassland      blowouts      spatial pattern     
Received:  22 December 2012      Published:  05 February 2013
ZTFLH:  TP79/P931.3  

Cite this article: 

Huercha1,2, WANG Xiao-jiang1, ZHANG Wen-jun1, LIU Yong-hong1, HAI Long1, ZHANG Lei1, Sulenggaowa3. Analysis on Spatial Pattern of Blowouts in Otindag Sandy Grassland Based on ALOS Data. JOURNAL OF DESERT RESEARCH, 2013, 33(3): 662-667.

URL: 

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00095     OR     http://www.desert.ac.cn/EN/Y2013/V33/I3/662

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