基于熵权物元模型的四川省土地生态安全评价

为进一步了解四川省土地生态安全现状，基于P-S-R模型建立评价指标体系，选取熵权法和物元法对四川省18个地级市土地生态安全做出评价，结果表明：成都土地生态安全级别为“临界安全”，自贡、泸州、广元、内江和达州的土地生态安全级别向“安全”级转化，攀枝花、德阳、绵阳、遂宁、乐山、南充、眉山、宜宾、巴中和资阳的土地生态安全级别向“较安全”级转化，广安和雅安土地生态安全级别向“较不安全”级转化。综合单指标关联度和综合关联度得出，四川省各地级市土地生态安全总体趋于向良好转变。

Evaluation of Land Eco-security of Sichuan Province Based on Entropy Weight and Matter Element Model

In order to understand the status of land eco-security of Sichuan Province, evaluation index system based on P-S-R model was built, land eco-security of 18 cities in Sichuan Province was evaluated with the method of entropy weight and matter element. The results showed that: the land eco-security level of Chengdu was “criticality safety”, the land eco-security level of Zigong, Luzhou, Guangyuan, Neijiang and Dazhou transformed to “safety”, the land eco-security level of Panzhihua, Deyang, Mianyang, Suining, Leshan, Nanchong, Meishan, Yibin, Bazhong and Ziyang transformed to “safer”, the land eco-security level of Guangan and Yaan transformed to “less safe”. Combined with single index correlation degree and comprehensive correlation degree, land eco-security of every city of Sichuan Province tended to be good.