Evaluation on land ecological security in mountains of northern Guangdong province based on principal component analysis

doi:10.14088/j.cnki.issn0439-8114.2020.03.010

Abstract

Abstract: In order to explore the status of land ecological security in mountainous of northern Guangdong province, 14 indicators from the aspects of resource and environmental pressure, land use status and social economic development were selected by the principal component analysis method, then the evaluation index system with county administrative division as evaluation unit was built to comprehensively evaluate the land ecological security in the mountainous of northern Guangdong province. The results showed that the comprehensive score of land ecological security in the mountainous of northern Guangdong province was 0.477 9, which was in the level Ⅲ, critical safety. The spatial ecological security level of this area showed the regional difference that west was high and east was low in spatial distribution. Population density and economic development level were the main factors affecting the ecological security of mountainous in northern Guangdong province, and have a negative correlation with the level of land ecological security.

Key words: land ecological security, principal component analysis, mountainous of northern Guangdong province

CLC Number:

F301.2
X826

MA Jun-wei. Evaluation on land ecological security in mountains of northern Guangdong province based on principal component analysis[J]. HUBEI AGRICULTURAL SCIENCES, 2020, 59(3): 48-52.

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