Mr. Zhimin Liu Profile

Zhimin Liu

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Proceedings Article | 10 February 2023 Paper

Ecological vulnerability and its driving factors analysis based on GIS method in Nagqu, Tibet

Zhimin Liu, Jiacheng Ling, Kangkang Peng, Yu Hu, Luo Guo

Proceedings Volume 12552, 125520E (2023) https://doi.org/10.1117/12.2667480

KEYWORDS: Factor analysis, Geographic information systems, Ecosystems, Data modeling, Data centers

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Based on GIS method and data from every five years from 2000 to 2020, this paper shows the distribution of ecological vulnerability in Nagqu using the ecological vulnerability index (EVI) and discusses its potential driving factors. The areas with high EVI aggregated in the southeastern Nagqu surrounding Seni district and the western Nagqu such as Nima County. In the rest of the areas except for Shuanghu County, there had been a sharp increase in EVI. To find the driving factors for the distribution pattern and trend, we choose the most weighted factors: population, animal husbandry, and economy. With analyses of these factors, we conclude that animal husbandry might account for the long-term distribution of ecological vulnerability in Nagqu. The changes in population and economy have a similar trend to the change in EVI, thus we conclude the two factors are possibly responsible for the recent EVI change. We also find that the relative vulnerable areas have different driving factors of vulnerability. In southeastern Nagqu, population and economy are the main factors. While in the west, animal husbandry plays more role. This indicates that different methods of management should be considered in different areas, and lower-scale studies are needed for future management.

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