ZHANG Jia-chen, GAO Peng, DONG Xue-de, et al. Ecological Vulnerability Assessment of Qingdao Coastal Zone Based on Landscape Pattern Analysis[J]. Journal of Ecology and Rural Environment, 2021, 37(8): 1022-1030. DOI: 10.19741/j.issn.1673-4831.2020.0860
    Citation: ZHANG Jia-chen, GAO Peng, DONG Xue-de, et al. Ecological Vulnerability Assessment of Qingdao Coastal Zone Based on Landscape Pattern Analysis[J]. Journal of Ecology and Rural Environment, 2021, 37(8): 1022-1030. DOI: 10.19741/j.issn.1673-4831.2020.0860

    Ecological Vulnerability Assessment of Qingdao Coastal Zone Based on Landscape Pattern Analysis

    • In order to study the change characteristics of the vulnerability of urban coastal zone landscape types and reveal the temporal and spatial distribution of coastal ecological vulnerability, indicators, such as aggregation degree, fractal dimension reciprocal, patch density, vegetation coverage index and land ecological suitability, were selected to calculate the vulnerability of landscape types. An ecological vulnerability index model was constructed to evaluate the ecological vulnerability of Qingdao coastal zone based on the remote sensing image data of Qingdao in 2009 and 2018. The results show that: (1) Among the coastal landscape types of Qingdao from 2009 to 2018, the area of forest land, water area, residential and industrial land showed an increasing trend, while the area of cultivated land, grassland and unused land tend to decrease, and the six land use types were all transferred to other types. Among them, studies show the largest decrease in unused land, with a reduction ratio of 55.18%, and the residential and industrial land expanded significantly, with an increase ratio of 58.99%; (2) The unused land and grassland are most vulnerable, which means they are easily disturbed by human factors and external environment. The landscape type of forest land is the third most vulnerable, and the water area is the least; (3) There was a decrease trend in the area of ecologically sound areas and severely vulnerable areas in Qingdao coastal zone, with an average annual reduction rate of 16.24% and 16.83% compared with last year, respectively. However, the mild vulnerable areas, general vulnerable areas and vulnerable areas showed an increasing trend, with an average annual growth rate of 0.95%, 10.74% and 11.24% compared with last year, respectively. The overall ecological vulnerability is high in the east and southwest, and low in the middle. Overall, mild vulnerability is the main vulnerability level of Qingdao coastal zone.
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