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  • CN 62-1070/P
  • ISSN 1000-694X
  • Bimonthly 1981
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Effects of Grazing Intensity on Vegetation Landscape Pattern in Stipa krylovii steppe in Inner Mongolia

  • Song Yantao ,
  • Wuyunna ,
  • Zhang Jing ,
  • Huo Guangwei ,
  • Zhang Fengjie
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  • College of Environment and Resources, Dalian Minzu University, Dalian 116605, Liaoning, China

Received date: 2016-03-08

  Revised date: 2016-05-06

  Online published: 2016-05-20

Abstract

The aim of this study was to research the landscape pattern responding to light, moderate and heavy grazing intensities by using multi-scale segmentation algorithm with the high resolution multispectral data of WorldView-2 for the Kherlen River Basin in the Hulunbeir Steppe. The results showed that: number of patches, edge density, landscape shape index, and mean patch fractal dimension gradually reduced with the increase of segmentation scale, and the reasonable segmentation scale was at 100. Landscape shape index was maximum partition degree among grazing gradient, which could be used for determining the degree of disturbance intensity impacting on vegetation. Grazing was the decisive factor in vegetation landscape fragmentation in the region. Landscape index in heavy grazing area was higher than light and moderate grazing area, and landscape fragmentation was serious by heavy grazing intensity. The patches were affected by precipitation and great variation between patches in heavy grazing area.

Cite this article

Song Yantao , Wuyunna , Zhang Jing , Huo Guangwei , Zhang Fengjie . Effects of Grazing Intensity on Vegetation Landscape Pattern in Stipa krylovii steppe in Inner Mongolia[J]. Journal of Desert Research, 2016 , 36(3) : 674 -680 . DOI: 10.7522/j.issn.1000-694X.2016.00061

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