Bulletin of Surveying and Mapping ›› 2020, Vol. 0 ›› Issue (2): 121-125.doi: 10.13474/j.cnki.11-2246.2020.0057

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Study on monitoring rocky desertification based on the combination of remote sensing interpretation and geographical conditions

LI Wei1, WEI Man2   

  1. 1. Hainan Surveying and Mapping Information Center of the Ministry of Natural Resources, Haikou 570203, China;
    2. Fourth Aerial Survey and Remote Sensing Institute of the Ministry of Natural Resources, Haikou 570203, China
  • Received:2019-09-02 Revised:2019-12-09 Online:2020-02-25 Published:2020-03-04

Abstract: Considering the complexity of the surface rocky desertification, drawing on the evaluation methods of the state and degree of the rocky desertification of the forestry department, making full use of the results of the geographical conditions of the land surface coverage and DEM, combining with the remote sensing monitoring technology to calculate the comprehensive coverage of the bedrock and vegetation on the surface, taking the field investigation as the evidence, obtaining the monitoring and evaluation factors of the rocky desertification in the study area, and determining the state and degree of the rocky desertification in the study area, a set of rock desertification monitoring technology is constructed based on remote sensing interpretation. The results show that from 2008 to 2016, the occurrence rate of rocky desertification in the study area has decreased significantly, and the regional ecological environment has been gradually restored. The technical methods of this study are feasible, and on the basis of saving human resources, the status and degree of rocky desertification can be quickly obtained.

Key words: remote sensing interpretation, geographical conditions, rocky desertification, percentage of bare rocks, vegetation coverage

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