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Volume 39 Issue 2
Apr.  2020
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Article Navigation >  CARSOLOGICA SINICA  > 2020  >  39(2): 196-205
WU Yue, ZHOU Zhongfa, ZHAO Xin, DAN Yusheng, HUANG Denghong. Spatiotemporal variation of vegetation coverage in plateau mountainous areas based on remote sensing cloud computing platform: A case study of Guizhou Province[J]. CARSOLOGICA SINICA, 2020, 39(2): 196-205. doi: 10.11932/karst2020y16
Citation: WU Yue, ZHOU Zhongfa, ZHAO Xin, DAN Yusheng, HUANG Denghong. Spatiotemporal variation of vegetation coverage in plateau mountainous areas based on remote sensing cloud computing platform: A case study of Guizhou Province[J]. CARSOLOGICA SINICA, 2020, 39(2): 196-205. doi: 10.11932/karst2020y16
shu

Spatiotemporal variation of vegetation coverage in plateau mountainous areas based on remote sensing cloud computing platform: A case study of Guizhou Province

doi: 10.11932/karst2020y16

  • School of Karst Science /School of Geography and Environment, Guizhou Normal University, Guiyang, Guizhou 550001, China/The State Key Laboratory Incubation Base for Karst Mountain Ecology Environment of Guizhou Province, Guiyang 550001, China

  • Publish Date: 2020-04-25
    Abstract
  • The purpose of this work is to reveal the spatio-temporal variation of vegetation in karst mountainous areas. We choose the Landsat-NDVI images of 1748 scenes with 30 m resolution during 2000-2018, combined with data from 35 meteorological stations and the pixel dichotomy model, linear trend analysis and geographic detectors to quantitatively estimate the annual vegetation coverage in Guizhou Province in the past 19 years. The spatial and temporal variation and driving forces of vegetation coverage were analyzed. The results show that，(1) the areas of medium-high vegetation coverage account for 63% and the area of high vegetation coverage accounts for 21.16%, which is mainly concentrated in the clastic areas. On the whole, the amount of vegetation coverage is of such an order: clastic rock > dolomite > limestone. (2) In the past 19 years, the vegetation coverage in Guizhou Province has shown slight improvement, with an average annual growth rate of 0.4%. The multi-year average value of maximum vegetation coverage in severe rocky desertification areas is constantly lower than the general vegetation coverage. (3) During the study period, the overall change of vegetation coverage in Guizhou Province was stable, dominated by slight improvement and basically no-change, the sum of which accounts for about 95.4% of the total area. The degraded areas are mainly distributed in periphery of cities and towns, accounting for about 3.8% of the total area. (4) The interaction between meteorological and geographical factors has greater impact on the spatial pattern of vegetation coverage than that of single factor. In summary, the key factors affecting vegetation restoration and ecological environment reconstruction include urban area expansion, rocky desertification control project, geographical location and meteorological factors. The study of multi-year dynamic characteristics of vegetation coverage aims to provide important basic data and scientific reference for water and soil conservation, ecological environment protection decision-making, ecological restoration (rocky desertification control) and sustainable management of relevant departments.

     

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