Ecological Security Assessment of Main Grain-producing Areas in China
DOI:
https://doi.org/10.54097/nxdckj74Keywords:
Main grain producing areas; Ecological security; PSR model; Principal component analysis; Cluster analysis.Abstract
The stability of grain output in main grain-producing areas has a decisive impact on China's grain security, and the ecological security of main grain-producing areas plays a decisive role in ensuring the sustainable growth of grain output. Based on the PSR model, the ecological security evaluation system is constructed, the principal component analysis method is used to evaluate the ecological security of the main grain-producing areas from 2015 to 2020, and the cluster analysis is used to classify the evaluation results. The research shows that from 2015 to 2020, the ecological security in the main grain-producing areas is generally stable, but still at a low level; Sichuan, Jiangxi, and Heilongjiang have higher ecological security levels, while Shandong, Jiangsu, and Hebei have lower ecological security levels.
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