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Volume 35 Issue 5
Oct.  2016
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Article Navigation >  CARSOLOGICA SINICA  > 2016  >  35(5): 594-601
SU Wangde, SHI Zhengtao, LIU Gang. Rocky desertification evaluation based on RS and GIS in Nanting river basin[J]. CARSOLOGICA SINICA, 2016, 35(5): 594-601. doi: 10.11932/karst20160516
Citation: SU Wangde, SHI Zhengtao, LIU Gang. Rocky desertification evaluation based on RS and GIS in Nanting river basin[J]. CARSOLOGICA SINICA, 2016, 35(5): 594-601. doi: 10.11932/karst20160516
shu

Rocky desertification evaluation based on RS and GIS in Nanting river basin

doi: 10.11932/karst20160516

  • College of Tourism & Geography Science

  • Publish Date: 2016-10-25
    Abstract
  • In this paper, remote sensing and geography information system technologies are applied on ETM, DEM and geological lithology data of nanting river basin to extract evaluation factorsto create the evaluation index of rocky desertification, and to evaluate the intensity of rocky desertification. The intensity grading of rocky desertification in karst area was derived by using spatial overlay analysis and statistical analysis methods. The relationship between land use data and rocky desertification information and land use/land cover were used to analyze the impact of land use patterns on rocky desertification of Nanting river basin. The results indicated that, (1) the sorting of karst rocky desertification intensity by area is, medium>light>potential>strong>no rocky>extremely strong rocky desertification. (2) The strong and extremely strong rocky desertification areas are mainly distributed in land cover types of cultivated land and sparse woodland. In addition to bare rock ratio, vegetation, slope, lithology and other main factors, land use by humanbeing also plays an important role in aggravating karst rocky desertification.

     

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