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Volume 28 Issue 3
Sep.  2009
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Article Navigation >  CARSOLOGICA SINICA  > 2009  >  28(3): 300-307
LI Rong-biao, HONG Han-lie, YIN Ke, LI Yang-bing, YANG Guangbin, AN Yu-lun. Evaluation on karst eco-environment sensitivity— A case study in Duyun city[J]. CARSOLOGICA SINICA, 2009, 28(3): 300-307. doi: 10.3969/j.issn.1001-4810.2009.03.012
Citation: LI Rong-biao, HONG Han-lie, YIN Ke, LI Yang-bing, YANG Guangbin, AN Yu-lun. Evaluation on karst eco-environment sensitivity— A case study in Duyun city[J]. CARSOLOGICA SINICA, 2009, 28(3): 300-307. doi: 10.3969/j.issn.1001-4810.2009.03.012
shu

Evaluation on karst eco-environment sensitivity— A case study in Duyun city

doi: 10.3969/j.issn.1001-4810.2009.03.012
  • 1.

    (1. Institute of Tourism and Economic Development, Kaili University

  • 2.

    Faculty of Earth Sciences, China University of Geosciences

  • 3.

    College of Geography and Biology Science, Guizhou Normal University

  • Received Date: 2008-07-19
  • Publish Date: 2009-09-25
    Abstract
  • Evaluation index system of eco-environment sensitivity was established in this paper, which is founded with six kinds of indexes, including stratum lithology, topographical slope, vegetation cover, land use and population density as well as average annual net income of farmers. Based on the 3S technology, the paper extracted evaluation indexes, built spatial analysis model for spatial overlay analysis of the evaluation indexes, and graded eco-environment sensitivity and its spatial distribution in karst area. Grade evaluation analysis was finally established according to the characteristics of spatial distribution. The results show that strong, moderate, light, minor and non-eco-environment sensitivity area cover an area of 75.23 km2, 228.32km2，902.11km2, 841.00km2and 231.35 km2 respectively, which account for 3.30％, 10.02％, 39.60％, 36.92％, and 10.16％ of the total area of the whole city accordingly. At the same time，the research indicate that the problem of fragile eco-environment sensitivity in karst area is a result that the fragile eco-environment is disturbed perennial by human activities.

     

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