Vegetation Landscape Changes and Driving Factors of Typical Karst Region in the Anthropocene

Vegetation degeneration has become a serious ecological problem for karst regions in the Anthropocene. According to the deficiency of long serial and high-resolution analysis of karst vegetation, this paper reconstructed the variation of vegetation landscape changes from 1987 to 2020 in a typical ka...

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Bibliographic Details
Published in:Remote sensing (Basel, Switzerland) Switzerland), 2022-11, Vol.14 (21), p.5391
Main Authors: Yu, Mingzhao, Song, Shuai, He, Guizhen, Shi, Yajuan
Format: Article
Language:English
Subjects:
Anthropocene
Climate change
Correlation analysis
Degeneration
Ecosystems
human activities
Human impact
Human influences
Karst
Land use
Landsat
Landscape
Natural vegetation
Precipitation
Radiation
Regions
Remote sensing
Sustainable development
Time
Time series
Tourism
Trend analysis
Trends
Vegetation
Vegetation growth
vegetation landscape
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Summary:Vegetation degeneration has become a serious ecological problem for karst regions in the Anthropocene. According to the deficiency of long serial and high-resolution analysis of karst vegetation, this paper reconstructed the variation of vegetation landscape changes from 1987 to 2020 in a typical karst region of China. Using Landsat time series data, the dynamic changes and driving factors of natural karst vegetation were identified at the landscape scale. On the premise of considering the time-lag effect, the main climatic factors that influence vegetation growth were presented at the interannual timescale. Then, the approach of residual analysis was adopted to distinguish the dominant factors affecting vegetation growth. Results of trend analysis revealed that 21.5% of the forestland showed an overall significant decline in vegetation growth, while only 1.5% showed an increase in vegetation growth during the study period. Precipitation and radiation were the dominant meteorological factors influencing vegetation at the interannual timescale, as opposed to temperature. More than 70% of the natural vegetation growth was dominated by climatic factors. The area percentage of negative human impact has increased gradually since 2009 and reached 18.5% in 2020, indicating the currently serious situation of vegetation protection; fortunately, in recent years, human disturbances on vegetation have been mitigated in karst areas with the promotion of ecological conservation and restoration projects.
ISSN:2072-4292
2072-4292
DOI:10.3390/rs14215391